1
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Karn LM, Britton A, Leznoff DB. Inducing Platinophilic Interactions in [Pt(SCN) 4] 2- Salts by Cation Tuning. Inorg Chem 2024; 63:11977-11985. [PMID: 38885436 DOI: 10.1021/acs.inorgchem.4c00255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
A series of simple [Pt(SCN)4]2- salts with a variety of cations was synthesized and characterized using X-ray crystallography to determine factors that could induce platinophilic interactions between [Pt(SCN)4]2- anions, including cation size and shape, charge, and ability to participate in hydrogen bonding. The salts [N(PPh3)2]2[Pt(SCN)4], [AsPh4]2[Pt(SCN)4], and [Co(1,10-phenanthroline)3][Pt(SCN)4] feature bulky, noncoordinating cations where the [Pt(SCN)4]2- anions are completely separated from each other, with no Pt-Pt interactions present. Salts containing the hydrogen-bonding cations [Co(NH3)6]2[Pt(SCN)4]3 and [Co(en)3]2[Pt(SCN)4]3 (en = 1,2-ethylenediamine) display close Pt-Pt distances, with both compounds exhibiting platinophilic interactions with distances of 3.373(2) and 3.539(8) Å, respectively, the first reported platinophilic interactions with the [Pt(SCN)4]2- unit. [Co(en)3]2[Pt(SCN)4]3 also presents intermolecular chalcogen S···S and Pt···S interactions, resulting in increased dimensionality while also assisting in assembling the platinophilic interaction. The compounds are emissive at 77 K in the solid state, exhibiting a d-d metal-centered transition regardless of whether or not any platinophilic interactions are present. Overall, hydrogen-bonding cations are most likely to promote close proximity of the Pt(II) metal centers and induce the formation of platinophilic interactions in [Pt(SCN)4]2-.
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Affiliation(s)
- Leanna M Karn
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
| | - Adlih Britton
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
| | - Daniel B Leznoff
- Department of Chemistry, Simon Fraser University, 8888 University Dr., Burnaby V5A 1S6, British Columbia, Canada
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2
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Wang N, Wang WW, Liang XW, Wang PY, Liu T, Yao ZQ, Zhao JP, Liu FC. Giant Anisotropic Thermal Expansion Phase Transition of Silver Iodide Anionic Organic-Inorganic Hybrid. Inorg Chem 2024; 63:12350-12359. [PMID: 38887050 DOI: 10.1021/acs.inorgchem.4c01846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Hybrid metal halide materials with charming phase transition behaviors have attracted considerable attention. In former works, much attention has been focused on the phase transition triggered by the order-disorder or displacement motions of the organic component. However, manipulating the variation of the inorganic component to achieve the phase transition has rarely been reported. Herein, two novel organic-inorganic hybrid materials, [THPM]n[AgX2]n (THPM = 3,4,5,6-tetrahydropyrimidin-1-ium, X = I for 1 and Br for 2) with the [AgX2]nn- anionic chain structure, were synthesized. At 293 K, the [AgX2]nn- chains in 1 were constructed by the tetramer units of Ag atoms, while that in 2 was assembled by the dimer structure. Upon heating to 355 K, owing to the variation of the metallophilic interaction between adjacent Ag atoms, a unique transformation process from tetramer to dimer in [AgI2]nn- chains of 1 can be detected and endow 1 with a giant anisotropic thermal expansion with linear strain of ∼7% and shear strain of ∼20%, which can be used as a mechanical actuator for switching. Alternatively, for 2, no phase transition process can be observed upon the temperature variation. This work provides an effective approach to design phase transition materials triggered by the inorganic part.
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Affiliation(s)
- Nan Wang
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Wei-Wei Wang
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Xiao-Wen Liang
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Pu-Yue Wang
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Tong Liu
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Zhao-Quan Yao
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Jiong-Peng Zhao
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Fu-Chen Liu
- TKL of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin, 300384, P. R. China
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3
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Pei XL, Zhao P, Ube H, Lei Z, Ehara M, Shionoya M. Single-gold etching at the hypercarbon atom of C-centred hexagold(I) clusters protected by chiral N-heterocyclic carbenes. Nat Commun 2024; 15:5024. [PMID: 38866773 PMCID: PMC11169362 DOI: 10.1038/s41467-024-49295-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 05/30/2024] [Indexed: 06/14/2024] Open
Abstract
Chemical etching of nano-sized metal clusters at the atomic level has a high potential for creating metal number-specific structures and functions that are difficult to achieve with bottom-up synthesis methods. In particular, precisely etching metal atoms one by one from nonmetallic element-centred metal clusters and elucidating the relationship between their well-defined structures, and chemical and physical properties will facilitate future materials design for metal clusters. Here we report the single-gold etching at a hypercarbon centre in gold(I) clusters. Specifically, C-centred hexagold(I) clusters protected by chiral N-heterocyclic carbenes are etched with bisphosphine to yield C-centred pentagold(I) (CAuI5) clusters. The CAuI5 clusters exhibit an unusually large bathochromic shift in luminescence, which is reproduced theoretically. The etching mechanism is experimentally and theoretically suggested to be a tandem dissociation-association-elimination pathway. Furthermore, the vacant site of the central carbon of the CAuI5 cluster can accommodate AuCl, allowing for post-functionalisation of the C-centred gold(I) clusters.
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Affiliation(s)
- Xiao-Li Pei
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Pei Zhao
- Research Centre for Computational Science, Institute for Molecular Science and SOKENDAI, Myodaiji, Okazaki, Aichi, 444-8585, Japan
| | - Hitoshi Ube
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
| | - Zhen Lei
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan
- Fujian Provincial Key Laboratory of Advanced Inorganic Oxygenated Materials, College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Masahiro Ehara
- Research Centre for Computational Science, Institute for Molecular Science and SOKENDAI, Myodaiji, Okazaki, Aichi, 444-8585, Japan.
| | - Mitsuhiko Shionoya
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan.
- Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
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4
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Burguera S, Bauzá A, Frontera A. A novel approach for estimating the strength of argentophilic and aurophilic interactions using QTAIM parameters. Phys Chem Chem Phys 2024; 26:16550-16560. [PMID: 38829286 DOI: 10.1039/d4cp00410h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
Metallophilic interactions, specifically argentophilic (Ag⋯Ag) and aurophilic (Au⋯Au) interactions, play a crucial role in stabilizing various molecular and solid-state structures. In this manuscript, we present a convenient method to estimate the strength of argentophilic and aurophilic interactions based on quantum theory of atoms in molecules (QTAIM) parameters evaluated at the bond critical points connecting the metal centres. We employ density functional theory (DFT) calculations and the QTAIM parameters to develop this energy predictor. To validate the reliability and applicability of our method, we test it using a selection of X-ray crystal structures extracted from the cambridge structural database (CSD), where argentophilic and aurophilic interactions are known to be significant in their solid-state arrangements. This method offers a distinct advantage in systems where multiple interactions, beyond metallophilic interactions, contribute to the overall stability of the structure. By employing our approach, researchers can distinctly quantify the strength of argentophilic and aurophilic interactions, facilitating a deeper understanding of their impact on molecular and solid-state properties. This method fills a critical gap in the existing literature, offering a valuable tool to researchers seeking to unravel the intricate interactions in metal-containing compounds.
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Affiliation(s)
- Sergi Burguera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain.
| | - Antonio Bauzá
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain.
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Crta de Valldemossa km 7.5, 07122 Palma de Mallorca (Baleares), Spain.
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5
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Li S, Li NN, Dong XY, Zang SQ, Mak TCW. Chemical Flexibility of Atomically Precise Metal Clusters. Chem Rev 2024; 124:7262-7378. [PMID: 38696258 DOI: 10.1021/acs.chemrev.3c00896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
Ligand-protected metal clusters possess hybrid properties that seamlessly combine an inorganic core with an organic ligand shell, imparting them exceptional chemical flexibility and unlocking remarkable application potential in diverse fields. Leveraging chemical flexibility to expand the library of available materials and stimulate the development of new functionalities is becoming an increasingly pressing requirement. This Review focuses on the origin of chemical flexibility from the structural analysis, including intra-cluster bonding, inter-cluster interactions, cluster-environments interactions, metal-to-ligand ratios, and thermodynamic effects. In the introduction, we briefly outline the development of metal clusters and explain the differences and commonalities of M(I)/M(I/0) coinage metal clusters. Additionally, we distinguish the bonding characteristics of metal atoms in the inorganic core, which give rise to their distinct chemical flexibility. Section 2 delves into the structural analysis, bonding categories, and thermodynamic theories related to metal clusters. In the following sections 3 to 7, we primarily elucidate the mechanisms that trigger chemical flexibility, the dynamic processes in transformation, the resultant alterations in structure, and the ensuing modifications in physical-chemical properties. Section 8 presents the notable applications that have emerged from utilizing metal clusters and their assemblies. Finally, in section 9, we discuss future challenges and opportunities within this area.
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Affiliation(s)
- Si Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Na-Na Li
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Xi-Yan Dong
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, China
| | - Shuang-Quan Zang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Thomas C W Mak
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, SAR 999077, China
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6
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Slinger BL, Zhu J, Widenhoefer RA. Cationic Bis(Gold) Indenyl Complexes. Chempluschem 2024; 89:e202300691. [PMID: 38259056 DOI: 10.1002/cplu.202300691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 01/23/2024] [Accepted: 01/23/2024] [Indexed: 01/24/2024]
Abstract
Reaction of (P)AuOTf [P=P(t-Bu)2o-biphenyl] with indenyl- or 3-methylindenyl lithium led to isolation of gold η1-indenyl complexes (P)Au(η1-inden-1-yl) (1 a) and (P)Au(η1-3-methylinden-1-yl) (1 b), respectively, in >65 % yield. Whereas complex 1 b is static, complex 1 a undergoes facile, degenerate 1,3-migration of gold about the indenyl ligand (ΔG≠ 153K=9.1±1.1 kcal/mol). Treatment of complexes 1 a and 1 b with (P)AuNTf2 led to formation of the corresponding cationic bis(gold) indenyl complexes trans-[(P)Au]2(η1,η1-inden-1,3-yl) (2 a) and trans-[(P)Au]2(η1,η2-3-methylinden-1-yl) (2 b), respectively, which were characterized spectroscopically and modeled computationally. Despite the absence of aurophilic stabilization in complexes 2 a and 2 b, the binding affinity of mono(gold) complex 1 a toward exogenous (P)Au+ exceed that of free indene by ~350-fold and similarly the binding affinity of 1 b toward exogenous (P)Au+ exceed that of 3-methylindene by ~50-fold. The energy barrier for protodeauration of bis(gold) indenyl complex 2 a with HOAc was ≥8 kcal/mol higher than for protodeauration of mono(gold) complex 1 a.
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Affiliation(s)
- Brady L Slinger
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
| | - Jiaqi Zhu
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
| | - Ross A Widenhoefer
- Department of Chemistry, Duke University French Family Science Center, Durham, NC, 27708-0346, USA
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7
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Powers-Riggs NE, Birgisson BO, Raj SL, Biasin E, Lenzen P, Zederkof DB, Haubro M, Tveiten DKV, Hartsock RW, van Driel TB, Kunnus K, Chollet M, Robinson JS, Nelson S, Forbes R, Haldrup K, Pedersen KS, Levi G, Ougaard Dohn A, Jónsson H, Mo Ller KB, Natan A, Nielsen MM, Gaffney KJ. Characterization of Deformational Isomerization Potential and Interconversion Dynamics with Ultrafast X-ray Solution Scattering. J Am Chem Soc 2024; 146:13962-13973. [PMID: 38727611 DOI: 10.1021/jacs.4c00817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Dimeric complexes composed of d8 square planar metal centers and rigid bridging ligands provide model systems to understand the interplay between attractive dispersion forces and steric strain in order to assist the development of reliable methods to model metal dimer complexes more broadly. [Ir2 (dimen)4]2+ (dimen = para-diisocyanomenthane) presents a unique case study for such phenomena, as distortions of the optimal structure of a ligand with limited conformational flexibility counteract the attractive dispersive forces from the metal and ligand to yield a complex with two ground state deformational isomers. Here, we use ultrafast X-ray solution scattering (XSS) and optical transient absorption spectroscopy (OTAS) to reveal the nature of the equilibrium distribution and the exchange rate between the deformational isomers. The two ground state isomers have spectrally distinct electronic excitations that enable the selective excitation of one isomer or the other using a femtosecond duration pulse of visible light. We then track the dynamics of the nonequilibrium depletion of the electronic ground state population─often termed the ground state hole─with ultrafast XSS and OTAS, revealing a restoration of the ground state equilibrium in 2.3 ps. This combined experimental and theoretical study provides a critical test of various density functional approximations in the description of bridged d8-d8 metal complexes. The results show that density functional theory calculations can reproduce the primary experimental observations if dispersion interactions are added, and a hybrid functional, which includes exact exchange, is used.
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Affiliation(s)
- Natalia E Powers-Riggs
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Benedikt O Birgisson
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Sumana L Raj
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Elisa Biasin
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Philipp Lenzen
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | | | - Morten Haubro
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Dagrún K V Tveiten
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Robert W Hartsock
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | - Tim B van Driel
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Kristjan Kunnus
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Matthieu Chollet
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Joseph S Robinson
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Silke Nelson
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Ruaridh Forbes
- LCLS, SLAC National Laboratory, Menlo Park, California 94025, United States
| | - Kristoffer Haldrup
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Kasper S Pedersen
- Department of Chemistry, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Gianluca Levi
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | - Asmus Ougaard Dohn
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
- Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark
| | - Hannes Jónsson
- Science Institute and Faculty of Physical Sciences, VR-III, University of Iceland, 107 Reykjavík, Iceland
| | | | - Adi Natan
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
| | | | - Kelly J Gaffney
- PULSE Institute, SLAC Accelerator National Laboratory, Stanford University, Stanford, California 94025, United States
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8
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Ghosh M, Parvin N, Panwaria P, Tothadi S, Bakthavatsalam R, Therambram A, Khan S. Diverse structural reactivity patterns of a POCOP ligand with coinage metals. Dalton Trans 2024; 53:7763-7774. [PMID: 38619861 DOI: 10.1039/d3dt03921h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
We have utilised the 4,6-di-tert-butyl resorcinol bis(diphenylphosphinite) (POCOP) ligand for exploring its coordination ability towards group 11 metal centres. The treatment of the bidentate ligand 1 with various coinage metal precursors afforded a wide range of structurally diverse complexes 2-12, depending upon the metal precursors used. This furnishes several multinuclear Cu(I) complexes with dimeric (2) and tetrameric cores (3, 4, and 5). The tetrameric stairstep complex 4 shows thermochromic behaviour, whereas the dimeric complex 2 and tetrameric complex 3 show luminescence properties at cryogenic temperatures. Interestingly, the halide substitution reaction of the dimeric complex 2 with KPPh2 produces a unique mixed phosphine-based tetrameric Cu(I) complex, 5. Treatment of the POCOP ligand with [CuBF4(CH3CN)4] in the presence of 2,2'-bipyridine afforded heteroleptic complex 6, consisting of tri- and tetra-coordinated cationic Cu(I) centres. Furthermore, we could also isolate cubane (8) and stairstep (9) complexes of Ag(I). The cationic Au(I) complex (12) was obtained from the dinuclear Au(I) complex of POCOP, 11. Complex 12 revealed the presence of a strong intramolecular aurophilic interaction with an Au⋯Au bond distance of 3.1143(9) Å. Subsequently, the photophysical properties of these complexes have been studied. All the complexes were characterised by single-crystal X-ray diffraction studies, routine NMR techniques, and mass spectroscopy.
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Affiliation(s)
- Moushakhi Ghosh
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Nasrina Parvin
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Prakash Panwaria
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Srinu Tothadi
- CSIR-Central Salt and Marine Chemicals Research Institute, Gijub Badheka Marg, Bhavnagar 364002, India
| | - Rangarajan Bakthavatsalam
- Department of Chemistry, Indian Institute of Science Education and Research Tirupati, Srinivasapuram-Jangalapalli Village, Tirupati 517619, India
| | - Arshad Therambram
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
| | - Shabana Khan
- Department of Chemistry, Indian Institute of Science Education and Research Pune, Dr. Homi Bhabha Road, Pashan, Pune 411008, India.
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9
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Visbal R, Rosado N, Zapata-Rivera J, Gimeno MC. Isolation of a Cyclic Trinuclear Gold(I) Complex with Metalated Phosphorus Ylides: Synthesis and Structural Properties. Inorg Chem 2024; 63:6589-6599. [PMID: 38442251 PMCID: PMC11022181 DOI: 10.1021/acs.inorgchem.3c03740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/25/2024] [Accepted: 02/19/2024] [Indexed: 03/07/2024]
Abstract
The first chiral and luminescent cyclic trinuclear gold(I) complex, [{AuCH(PPh2Me)(Ph2P)}3]3+, has been isolated with metalated phosphorus ylides (PY). This complex was initially obtained through the reaction of either mononuclear [C6F5SAuCH(PPh2Me)(Ph2P)]OTf or dinuclear [C6F5S{AuCH(PPh2Me)(Ph2P)}2](OTf)2 thiolate-gold-phosphane complexes in the presence of NaH, followed by the abstraction of the thiopyridine moiety employing either AgOTf or [Cu(CH3CN)4]PF6. Our quest for a more efficient synthesis route led to the development of a streamlined one-pot synthesis method, employing Ag(acac) as both a halogen abstractor and a base, offering a quicker and more direct path to this intriguing trimer. Comprehensive computational studies have unveiled the luminescent characteristics of this complex, which can be attributed to phosphorescence. These emissions originate from ligand-to-metal (LMCT) and metal-centered (MC) charge transfer excited states. Furthermore, the structural analysis via X-ray crystallography corroborated the formation of a trimeric species, featuring three monomers with the [AuCH(PPh2Me)(Ph2P)] motif. Each monomer exhibits a single chiral center, leading to four possible absolute configurations (RRR, RRS, RSR, and SRR). NMR and X-ray spectroscopy have provided valuable insights, establishing that the former configuration (RRR) is disfavored due to steric hindrance, while the three remaining configurations can interconvert, arising from the structural arrangement of the metallacycle and inherent symmetry operations.
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Affiliation(s)
- Renso Visbal
- Facultad
de Ciencias Naturales y Exactas, Departamento de Química, Universidad del Valle, A.A. 25360 Cali, Colombia
- Centro
de Excelencia en Nuevos Materiales (CENM), Universidad del Valle, A.A. 25360 Cali, Colombia
| | - Noelia Rosado
- Departamento
de Química Inorgánica, Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH) CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Jhon Zapata-Rivera
- Facultad
de Ciencias Naturales y Exactas, Departamento de Química, Universidad del Valle, A.A. 25360 Cali, Colombia
- Departamento
de Química, Facultad de Ciencias, Universidad de los Andes, Cra 1 #18A-12, A.A. 111711 Bogotá, Colombia
| | - M. Concepción Gimeno
- Departamento
de Química Inorgánica, Instituto
de Síntesis Química y Catálisis Homogénea
(ISQCH) CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
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10
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Wang K, Bao X. Computational Insights into the Photoinduced Dimeric Gold-Catalyzed Divergent Dechloroalkylation of gem-Dichloroalkanes with Alkenes. J Am Chem Soc 2024; 146:7679-7689. [PMID: 38448393 DOI: 10.1021/jacs.3c14352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
The employment of dinuclear Au(I) catalysts in photomediated modern organic transformations has attracted significant attention over the past decade, which commonly demonstrates unique catalytic performance compared with the corresponding mononuclear gold complexes. Nevertheless, detailed mechanisms of dinuclear gold catalysis remain ambiguous, and further mechanistic understanding is highly desirable. Herein, computational studies were carried out to gain mechanistic insights into the photoinduced dinuclear gold-catalyzed divergent dechloroalkylation of gem-dichloroalkanes. Computational results suggest that a proton transfer from the additive, Hantzsch ester (HE), to the base, guanidine, could lead to an ionic pair complex, which is ready to undergo excitation under blue light irradiation to result in the corresponding triplet excited state. Then, the excited complex might undergo oxidative quenching with the dinuclear gold photocatalyst [AuI-AuI]2+, via a single-electron-transfer (SET) step to afford an unusual [Au1/2-Au1/2]+ dinuclear species. The corresponding mononuclear gold catalyst, [AuI]+, however, is not ready to enable the analogous step to give a [Au0] species, which might account for the unique characteristics of dinuclear gold catalysis. Subsequently, the formed [Au1/2-Au1/2]+ intermediate could trigger a Cl-atom transfer from dichloromethane in an inner-sphere manner to furnish a critical chloromethyl radical. Next, the resulting chloromethyl radical could attack the alkenyl moiety of substrates to generate the corresponding alkyl radicals. Then, three possible mechanistic pathways were explored to rationalize the substrate-dependent divergent transformations in this protocol. The main factors responsible for the diversified transformations were discussed.
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Affiliation(s)
- Kaifeng Wang
- Innovation Center for Chemical Sciences, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
| | - Xiaoguang Bao
- Innovation Center for Chemical Sciences, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou Industrial Park, Suzhou, Jiangsu 215123, China
- Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu 215123, China
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11
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Ni B, Vivod D, Avaro J, Qi H, Zahn D, Wang X, Cölfen H. Reversible chirality inversion of an AuAg x-cysteine coordination polymer by pH change. Nat Commun 2024; 15:2042. [PMID: 38448402 PMCID: PMC10918179 DOI: 10.1038/s41467-024-45935-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 02/03/2024] [Indexed: 03/08/2024] Open
Abstract
Responsive chiral systems have attracted considerable attention, given their potential for diverse applications in biology, optoelectronics, photonics, and related fields. Here we show the reversible chirality inversion of an AuAgx-cysteine (AuAgx-cys) coordination polymer (CP) by pH changes. The polymer can be obtained by mixing HAuCl4 and AgNO3 with L-cysteine (or D-cysteine) in appropriate proportions in H2O (or other surfactant solutions). Circular dichroism (CD) spectrum is used to record the strong optical activity of the AuAg0.06-L-cys enantiomer (denoted as L0.06), which can be switched to that of the corresponding D0.06 enantiomer by alkalization (final dispersion pH > 13) and can be switched back after neutralization (final dispersion pH <8). Multiple structural changes at different pH values (≈9.6, ≈13) are observed through UV-Vis and CD spectral measurements, as well as other controlled experiments. Exploration of the CP synthesis kinetics suggests that the covalent bond formation is rapid and then the conformation of the CP materials would continuously evolve. The reaction stoichiometry investigation shows that the formation of CP materials with chirality inversion behavior requires the balancing between different coordination and polymerization processes. This study provides insights into the potential of inorganic stereochemistry in developing promising functional materials.
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Affiliation(s)
- Bing Ni
- Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany.
| | - Dustin Vivod
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Chair for Theoretical Chemistry/Computer Chemistry Centre (CCC) Nägelsbachstrasse 25, 91058, Erlangen, Germany
| | - Jonathan Avaro
- Center for X-ray Analytics, Biomimetic Membranes and Textile, Empa, Swiss Federal Laboratories for Materials Science and Technology, Lerchenfeldstrasse 5, St. Gallen, CH-9014, Switzerland
| | - Haoyuan Qi
- Faculty of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, 01062, Dresden, Germany
| | - Dirk Zahn
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Department of Chemistry and Pharmacy, Chair for Theoretical Chemistry/Computer Chemistry Centre (CCC) Nägelsbachstrasse 25, 91058, Erlangen, Germany
| | - Xun Wang
- Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Helmut Cölfen
- Physical Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany.
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12
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Albright EL, Levchenko TI, Kulkarni VK, Sullivan AI, DeJesus JF, Malola S, Takano S, Nambo M, Stamplecoskie K, Häkkinen H, Tsukuda T, Crudden CM. N-Heterocyclic Carbene-Stabilized Atomically Precise Metal Nanoclusters. J Am Chem Soc 2024; 146:5759-5780. [PMID: 38373254 DOI: 10.1021/jacs.3c11031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
This perspective highlights advances in the preparation and understanding of metal nanoclusters stabilized by organic ligands with a focus on N-heterocyclic carbenes (NHCs). We demonstrate the need for a clear understanding of the relationship between NHC properties and their resulting metal nanocluster structure and properties. We emphasize the importance of balancing nanocluster stability with the introduction of reactive sites for catalytic applications and the importance of a better understanding of how these clusters interact with their environments for effective use in biological applications. The impact of atom-scale simulations, development of atomic interaction potentials suitable for large-scale molecular dynamics simulations, and a deeper understanding of the mechanisms behind synthetic methods and physical properties (e.g., the bright fluorescence displayed by many clusters) are emphasized.
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Affiliation(s)
- Emily L Albright
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Tetyana I Levchenko
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Viveka K Kulkarni
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Angus I Sullivan
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Joseph F DeJesus
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa, Nagoya 464-8602, Japan
| | - Sami Malola
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
- Departments of Chemistry and Physics, Nanoscience Center, University of Jyväskylä, 40014, Jyväskylä, Finland
| | - Shinjiro Takano
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masakazu Nambo
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa, Nagoya 464-8602, Japan
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Kevin Stamplecoskie
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Hannu Häkkinen
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
- Departments of Chemistry and Physics, Nanoscience Center, University of Jyväskylä, 40014, Jyväskylä, Finland
| | - Tatsuya Tsukuda
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Cathleen M Crudden
- Department of Chemistry, Queen's University, Chernoff Hall, Kingston, Ontario K7L 3N6, Canada
- Carbon to Metal Coating Institute, Queen's University, Kingston, Ontario K7L 3N6, Canada
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa, Nagoya 464-8602, Japan
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13
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Royo D, Moreno S, Rodríguez-Castillo M, Monge M, Olmos ME, Zubkov FI, Pronina AA, Mahmoudi G, López-de-Luzuriaga JM. Terpyridine isomerism as a tool for tuning red-to-NIR emissive properties in heteronuclear gold(I)-thallium(I) complexes. Dalton Trans 2024; 53:4652-4661. [PMID: 38357972 DOI: 10.1039/d3dt04161a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2024]
Abstract
The polymeric linear chain [AuTl(C6Cl5)2]n reacts with three terpyridine-type ligands substituted with thiophene groups containing N-donor centres in different relative positions (L1, L2 and L3), leading to the Au(I)/Tl(I) complexes [AuTl(C6Cl5)2(L1)]n (1), [{AuTl(C6Cl5)2}2(L2)]n (2) and [AuTl(C6Cl5)2(L3)]n (3). X-Ray diffraction studies reveal that L1 acts as a chelate, while L2 and L3 act as bridging ligands, resulting in different coordination indexes for the thallium(I) centre. These structural differences strongly influence their optical properties, and while compounds 2 and 3 emit near the limit of the visible range, complex 1 emits in the infrared region. DFT calculations have also been carried out in order to determine the origin of the electronic transitions responsible for their optical properties.
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Affiliation(s)
- David Royo
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
| | - Sonia Moreno
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
| | - María Rodríguez-Castillo
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
| | - Miguel Monge
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
| | - M Elena Olmos
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
| | - Fedor I Zubkov
- Department of Organic Chemistry, RUDN University, 6 Miklukho-Maklaya St, Moscow, 117198, Russia
| | - Anastasia A Pronina
- Department of Organic Chemistry, RUDN University, 6 Miklukho-Maklaya St, Moscow, 117198, Russia
| | - Ghodrat Mahmoudi
- Department of Chemistry, Faculty of Science, University of Maragheh, P.O. Box 55136-83111, Maragheh, Iran.
- Samara State Technical University, Molodogvardeyskaya Str 244, Samara 443100, Russia
| | - José M López-de-Luzuriaga
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Madre de Dios 53, Universidad de La Rioja, 26006 Logroño, Spain.
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14
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Donamaría R, Lippolis V, López-de-Luzuriaga JM, Monge M, Olmos ME. Heteronuclear Gold(I)-Copper(I) Complexes with Thia- and Mixed Thia-Aza Macrocyclic Ligands: Synthesis, Structures and Optical Properties. Chempluschem 2024; 89:e202300429. [PMID: 37935030 DOI: 10.1002/cplu.202300429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/09/2023]
Abstract
The reactivity of the heterometallic polynuclear complexes [{Au(R)2 }2 Cu2 (MeCN)2 ]n (R=C6 F5 , C6 Cl5 ) with the thioether crowns 1,4,7-trithiacyclononane (L1, [12]aneS3 ), 1,4,8,11-tetrathiacyclododecane (L2, [14]aneS4 ), 1,4,7,10,13,16,19,22-octathiacyclotetracosane (L3, [24]aneS8 ), and the quinoline functionalized pendant arm derivatives of the 12-membered mixed-donor macrocycles 1-aza-,4,7,10-trithiacyclododecane ([12]aneNS3 ) and 1,7-diaza-4,10-dithiacyclododecane ([12]aneN2 S2 ), L4 and L5, respectively, was investigated in THF solution. While with L4 and L5 only ionic compounds of general formulation [Cu(L)][Au(R)2 ] were isolated and structurally characterized (none of them featuring Au⋅⋅⋅Cu interactions), with L1-L3, beside similar ionic compounds, some heteronuclear complexes of general formulation [{Au(R)2 }{Cu(L)}] and featuring Au⋅⋅⋅Cu interactions were also obtained. All of them display rather unusual non-classical C-H⋅⋅⋅Au hydrogen interactions. The complexes display in the solid state different optical properties related to their structures, which have been studied experimentally and theoretically via TD-DFT calculations. In particular, all compounds of the type [{Au(R)2 }{Cu(L)}] featuring Au⋅⋅⋅Cu metallophilic interactions display luminescence in the solid state both at room temperature (RT) and at 77 K. On the contrary, ionic compounds of general formulation [Cu(L)][Au(R)2 ], except [Cu(L4)][Au(C6 F5 )2 ], are not luminescent.
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Affiliation(s)
- Rocío Donamaría
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Universidad de La Rioja, Madre de Dios 53, 26004, Logroño, Spain
| | - Vito Lippolis
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, S.S. 554 Bivio per Sestu, 09042, Monserrato, CA, Italy
| | - José M López-de-Luzuriaga
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Universidad de La Rioja, Madre de Dios 53, 26004, Logroño, Spain
| | - Miguel Monge
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Universidad de La Rioja, Madre de Dios 53, 26004, Logroño, Spain
| | - M Elena Olmos
- Departamento de Química, Instituto de Investigación en Química (IQUR), Complejo Científico Tecnológico, Universidad de La Rioja, Madre de Dios 53, 26004, Logroño, Spain
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15
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Xu S, Wan Q, Yang J, Che CM. Anisotropic Metal-Metal Pauli Repulsion in Polynuclear d 10 Metal Clusters. J Phys Chem Lett 2024; 15:2193-2201. [PMID: 38373151 DOI: 10.1021/acs.jpclett.3c03434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Metallophilicity has been widely considered to be the driving force for self-assembly of closed-shell d10 metal complexes, but this view has been challenged by recent studies showing that metallophilicity in linear d10-d10 dimers is repulsive. This is due to strong metal-metal (M-M') Pauli repulsion (Wan, Q., Proc. Natl. Acad. Sci. U. S. A. 2021, 118, e2019265118). Here, we study M-M' Pauli repulsion in d10 metal clusters. Our results show that M-M' Pauli repulsion in d10 polynuclear clusters is 6-52% weaker than in similar linear d10 complexes due to the anisotropic shape of (n+1)s-nd hybridized orbitals. The overall M-M' interactions in closed-shell d10 polynuclear metal clusters remain repulsive. The effects of coordination geometry, relativistic effects, and the ligand's electronegativity on M-M' Pauli repulsion in polynuclear d10 clusters have been explored. These findings provide valuable guidance for the design and development of ligands and coordination geometries that alleviate M-M' Pauli repulsion in d10 metal cluster systems.
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Affiliation(s)
- Shuo Xu
- Department of Chemistry, State Kay Laboratory of Synthetic Chemistry, and CAS-HKU Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Qingyun Wan
- Department of Chemistry, State Kay Laboratory of Synthetic Chemistry, and CAS-HKU Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Jun Yang
- Department of Chemistry, State Kay Laboratory of Synthetic Chemistry, and CAS-HKU Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Chi-Ming Che
- Department of Chemistry, State Kay Laboratory of Synthetic Chemistry, and CAS-HKU Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road, Hong Kong, China
- HKU Shenzhen Institute of Research & Innovation, Shenzhen 518057, China
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16
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Cesari C, Bortoluzzi M, Femoni C, Forti F, Iapalucci MC, Zacchini S. Peraurated ruthenium hydride carbonyl clusters: aurophilicity, isolobal analogy, structural isomerism, and fluxionality. Dalton Trans 2024; 53:3865-3879. [PMID: 38311969 DOI: 10.1039/d3dt04282k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
The stepwise addition of increasing amounts of Au(PPh3)Cl to [HRu4(CO)12]3- (1) results in the sequential formation of [HRu4(CO)12(AuPPh3)]2- (2), [HRu4(CO)12(AuPPh3)2]- (3), and HRu4(CO)12(AuPPh3)3 (4). Alternatively, 4 can be obtained upon addition of HBF4·Et2O (two mole equivalents) to 3. Further addition of acid to 3 (three mole equivalents) results in the formation of the tetra-aurated cluster Ru4(CO)12(AuPPh3)4 (5). Compounds 2-5 have been characterized by IR, 1H and 31P{1H} NMR spectroscopies. Moreover, the molecular structures of 3-5 have been determined by single crystal X-ray diffraction as [NEt4][3]·2CH2Cl2, 4-b·2CH2Cl2, 4-a, 5·0.5CH2Cl2·solv, and 5·solv crystalline solids. Two different isomers of 4, that is 4-a and 4-b, have been crystallographically characterized and their rapid interconversion in solution was studied by variable temperature 1H and 31P{1H} NMR spectroscopies. Weak aurophilic Au⋯Au contacts have been detected in the solid state structures of 3-5. Computational studies have been performed in order to elucidate bonding and isomerism, as well as to predict the possible structure of the elusive species 2.
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Affiliation(s)
- Cristiana Cesari
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Ca' Foscari University of Venice, Via Torino 155, 30175 Mestre, Ve, Italy
| | - Cristina Femoni
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Francesca Forti
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Maria Carmela Iapalucci
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
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17
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Mendizabal F, Ceron ML, Lara D, Miranda-Rojas S. Closed-shell d 10-d 10 mechanochromic [AuPh(CNPh)] n complex: quantum chemistry electronic and optical properties. RSC Adv 2024; 14:5638-5647. [PMID: 38352689 PMCID: PMC10863605 DOI: 10.1039/d3ra08935e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 01/31/2024] [Indexed: 02/16/2024] Open
Abstract
The electronic structure, spectroscopic properties, and solid state chemistry of monomer and dimers of [AuPh(CNPh)] complex were studied at post-Hartree-Fock (MP2, SCS-MP2, and CC2) and density functional theory levels. The absorption spectra of these complexes were calculated using single excitation time-dependent (TD) methods at DFT, CC2, and SCS-CC2 levels. The influences of the bulk are accounted for at the PBE-D3 level, incorporating dispersion effects. The calculated values agree with the experimental range, where absorption and emission energies reproduce experimental trends with large Stokes shifts. The aurophilic interaction is identified as a key factor influencing the spectroscopic and structural properties of these complexes. The intermetallic interactions were found as the main factor responsible for MMCT electronic transitions in the models studied.
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Affiliation(s)
- Fernando Mendizabal
- Departamento de Química, Facultad de Ciencias, Universidad de Chile Casilla 653 Santiago Chile
| | - María Luisa Ceron
- Facultad de Ingeniería, Universidad Finis Terrae Av. Pedro de Valdivia 1509, Providencia Santiago Chile
| | - Dina Lara
- Departamento de Química, Facultad de Ciencias, Universidad de Chile Casilla 653 Santiago Chile
| | - Sebastián Miranda-Rojas
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello Avenida República 275 Santiago Chile
- Universidad Andrés Bello, Centro de Química Teórica & Computacional (CQT&C), Facultad de Ciencias Exactas, Departamento de Ciencias Químicas Avenida República 275 8370146 Santiago de Chile Chile
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18
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Döring C, Jones PG. Crystal structures of five gold(I) complexes with methyl-piperidine ligands. Acta Crystallogr E Crystallogr Commun 2024; 80:157-165. [PMID: 38333141 PMCID: PMC10848987 DOI: 10.1107/s2056989023010940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 12/21/2023] [Indexed: 02/10/2024]
Abstract
In bis-(4-methyl-piperidine-κN)gold(I) chloride, [Au(C6H13N)2]Cl (1), the methyl groups are, as expected, equatorial at the piperidine ring, but the Au atom is axial; this is the case for all five structures reported here, as is the expected linear coordination at the Au atom. Hydrogen bonding of the form N-H⋯Cl-⋯H-N leads to inversion-symmetric dimers, which are further connected by C-H⋯Au contacts. Bis(4-methyl-piperidine-κN)gold(I) di-chlorido-aurate(I), [Au(C6H13N)2][AuCl2] (2), also forms inversion-symmetric dimers; these involve aurophilic inter-actions and three-centre hydrogen bonds of the form NH(⋯Cl)2. Bis(4-methyl-piperidine-κN)gold(I) di-bromido-aurate(I), [Au(C6H13N)2][AuBr2] (3), is isotypic to 2. The 1:1 adduct chlorido-(4-methyl-piperidine-κN)gold(I) bis-(4-methyl-piperidine-κN)gold(I) chloride, [Au(C6H13N)2]Cl·[AuCl(C6H13N)] (4), crystallizes as its di-chloro-methane solvate. The asymmetric unit contains two formula units, in each of which the chloride anion accepts a hydrogen bond from the cation and from the neutral mol-ecule, and the two Au atoms are linked via an aurophilic inter-action. A further hydrogen bond leads to inversion-symmetric dimers. The asymmetric unit of bis-(2-methyl-piperidine-κN)gold(I) chloride, [Au(C6H13N)2]Cl (5), contains two 'half' cations, in which the Au atoms lie on twofold axes, and a chloride ion on a general position. Within each cation, the relative configurations at the atoms N and C2 (which bears the methyl substituent) are R,S. The twofold-symmetric dimer involves two N-H⋯Cl-⋯H-N units and an aurophilic contact between the two Au atoms.
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Affiliation(s)
- Cindy Döring
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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19
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Mahdavi SM, Bockfeld D, Büssing R, Karge B, Bannenberg T, Frank R, Brönstrup M, Ott I, Tamm M. Synthesis of N-heterocyclic carbene gold(I) complexes from the marine betaine 1,3-dimethylimidazolium-4-carboxylate. Dalton Trans 2024; 53:1942-1946. [PMID: 38205632 DOI: 10.1039/d3dt04135b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
The marine natural product norzooanemonin (1,3-dimethylimidazolium-4-carboxylate) has been used to prepare a series of carboxyl- or carboxylate-functionalized N-heterocyclic carbene (NHC) gold(I) complexes from [(Me2S)AuCl] in the presence of potassium carbonate. The potential of the resulting mono- and dicarbene complexes to act as cytotoxic or antibacterial drugs was investigated.
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Affiliation(s)
- Seyedeh Mahbobeh Mahdavi
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring30, 38106 Braunschweig, Germany.
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring30, 38106 Braunschweig, Germany.
| | - Rolf Büssing
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany
| | - Bianka Karge
- Department of Chemical Biology, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Thomas Bannenberg
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring30, 38106 Braunschweig, Germany.
| | - René Frank
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring30, 38106 Braunschweig, Germany.
| | - Mark Brönstrup
- Department of Chemical Biology, Helmholtz Centre for Infection Research GmbH, Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Ingo Ott
- Institute of Medicinal and Pharmaceutical Chemistry, Technische Universität Braunschweig, Beethovenstraße 55, 38106 Braunschweig, Germany
| | - Matthias Tamm
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring30, 38106 Braunschweig, Germany.
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20
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Sumida A, Onishi T, Imoto H, Naka K. Synthesis, structures, and photophysical properties of π-extended arsaborins. Dalton Trans 2024; 53:1706-1713. [PMID: 38168688 DOI: 10.1039/d3dt03798c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
In this study, various (hetero)arene-fused arsaborins were synthesized. All the synthesized arsaborins were stable under ambient conditions and allowed for the chemical modification of the lone pair of the arsenic atom. Experimental and computational studies revealed that these compounds possessed planar structures and weak anti-aromatic properties. Fluorescence with large Stokes shifts was observed due to drastic structural relaxation at 298 K, whereas intense phosphorescence due to the heavy-atom effect of arsenic was observed at 77 K. Furthermore, a thiophene-fused derivative demonstrated a temperature-dependent emission color change in the solid state, attributable to the gradual alteration in the ratio of monomer fluorescence, excimer fluorescence, and phosphorescence.
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Affiliation(s)
- Akifumi Sumida
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Tomoharu Onishi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
- FOREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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21
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Yan LL, Yam VWW. Evolution of Polynuclear Gold(I) Sulfido Complexes from Clusters and Cages to Macrocycles. J Am Chem Soc 2024; 146:609-616. [PMID: 38153960 DOI: 10.1021/jacs.3c10381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Two unprecedented tetratriacontanuclear and tetraicosanuclear gold(I) sulfido clusters (denoted as Au34-LMe and Au24-LCbz) with different temperature-induced stimulus-responsive behavior and emission property have been constructed by taking advantage of the judiciously designed bidentate phosphine ligand. Au34-LMe represents the highest nuclearity of the gold(I) sulfido cluster with more than a thousand atoms in the molecule. Octagonal macrocycles based on metal-cluster nodes have been assembled for the first time. The self-assembly and temperature-induced stimulus-responsive processes were monitored by 1H and 31P{1H} NMR spectroscopy, and the identities of the discrete gold(I) complexes were established by single-crystal structural analysis and high-resolution electrospray ionization mass spectrometry data. The steric effects exerted by the substituents on the V-shaped 1,3-bis(diphenylphosphino)benzene ligand have been shown to govern the self-assembly from the 1D cluster and 3D cage to 2D macrocycles. This work not only offers a new strategy to construct and regulate the structure of 2D macrocyclic gold(I) sulfido complexes but also lays the foundation for the future precise design and controlled construction of higher polygonal and cluster-node macrocycles.
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Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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22
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Pérez-Sánchez JC, Herrera RP, Concepción Gimeno M. Unlocking the catalytic potential of gold(II) complexes: a comprehensive reassessment. Dalton Trans 2024; 53:382-393. [PMID: 38088049 DOI: 10.1039/d3dt03687a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Gold(II) complexes, unlike their gold(I) and gold(III) counterparts, have been sparsely employed in the field of catalysis. This is primarily due to the challenges associated with isolating and characterising these open-shell species. However, these complexes offer a wide range of possibilities. On one hand, this intermediate oxidation state has proven to be more easily accessible through reduction and oxidation processes compared to the gold(I)/gold(III) redox couple, thereby facilitating potential homo-coupling and cross-coupling reactions. On the other hand, gold(II) exhibits Lewis acid behaviour, bridging the characteristics of the soft acid gold(I) and the hard acid gold(III). In this review, we focus on mono- and dinuclear gold(II) complexes, whether they are isolated and well-studied or proposed as intermediates in cross-coupling reactions induced by the action of oxidants or light. We delve into the unique reactivity and potential applications of these gold(II) species, shedding light on their role in this field. This comprehensive exploration aims to underscore the latent promise of gold(II) complexes in catalysis, offering insights into their structural and mechanistic aspects while highlighting their relevance in contemporary chemical transformations.
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Affiliation(s)
- Juan Carlos Pérez-Sánchez
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - Raquel P Herrera
- Department of Organic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
| | - M Concepción Gimeno
- Department of Inorganic Chemistry, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain.
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23
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Upmann D, Jones PG, Bockfeld D, Târcoveanu E. Crystal structures of sixteen phosphane chalcogenide complexes of gold(I) chloride, bromide and iodide. Acta Crystallogr E Crystallogr Commun 2024; 80:34-49. [PMID: 38312159 PMCID: PMC10833370 DOI: 10.1107/s2056989023010459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 12/05/2023] [Indexed: 02/06/2024]
Abstract
The structures of 16 phosphane chalcogenide complexes of gold(I) halides, with the general formula R 1 3- nR 2 nPEAuX (R 1 = t-butyl; R 2 = isopropyl; n = 0 to 3; E = S or Se; X = Cl, Br or I), are presented. The eight possible chlorido derivatives are: 1a, n = 3, E = S; 2a, n = 2, E = S; 3a, n = 1, E = S; 4a, n = 0, E = S; 5a, n = 3, E = Se; 6a, n = 2, E = Se; 7a, n = 1, E = Se; and 8a, n = 0, E = Se, and the corresponding bromido derivatives are 1b-8b in the same order. However, 2a and 2b were badly disordered and 8a was not obtained. The iodido derivatives are 2c, 6c and 7c (numbered as for the series a and b). All structures are solvent-free and all have Z' = 1 except for 6b and 6c (Z' = 2). All mol-ecules show the expected linear geometry at gold and approximately tetra-hedral angles P-E-Au. The presence of bulky ligands forces some short intra-molecular contacts, in particular H⋯Au and H⋯E. The Au-E bond lengths have a slight but consistent tendency to be longer when trans to a softer X ligand, and vice versa. The five compounds 1a, 5a, 6a, 1b and 5b form an isotypic set, despite the different alkyl groups in 6a. Compounds 3a/3b, 4b/8b and 6b/6c form isotypic pairs. The crystal packing can be analysed in terms of various types of secondary inter-actions, of which the most frequent are 'weak' hydrogen bonds from methine hydrogen atoms to the halogenido ligands. For the structure type 1a, H⋯X and H⋯E contacts combine to form a layer structure. For 3a/3b, the packing is almost featureless, but can be described in terms of a double-layer structure involving borderline H⋯Cl/Br and H⋯S contacts. In 4a and 4b/8b, which lack methine groups, Cmeth-yl-H⋯X contacts combine to form layer structures. In 7a/7b, short C-H⋯X inter-actions form chains of mol-ecules that are further linked by association of short Au⋯Se contacts to form a layer structure. The packing of compound 6b/6c can conveniently be analysed for each independent mol-ecule separately, because they occupy different regions of the cell. Mol-ecule 1 forms chains in which the mol-ecules are linked by a Cmethine⋯Au contact. The mol-ecules 2 associate via a short Se⋯Se contact and a short H⋯X contact to form a layer structure. The packing of compound 2c can be described in terms of two short Cmethine-H⋯I contacts, which combine to form a corrugated ribbon structure. Compound 7c is the only compound in this paper to feature Au⋯Au contacts, which lead to twofold-symmetric dimers. Apart from this, the packing is almost featureless, consisting of layers with only translation symmetry except for two very borderline Au⋯H contacts.
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Affiliation(s)
- Daniel Upmann
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Dirk Bockfeld
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Eliza Târcoveanu
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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24
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Döring C, Jones PG. Crystal structures of the isotypic complexes bis-(morpholine)-gold(I) chloride and bis-(morpholine)-gold(I) bromide. Acta Crystallogr E Crystallogr Commun 2023; 79:1161-1165. [PMID: 38313121 PMCID: PMC10833401 DOI: 10.1107/s2056989023009702] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 11/07/2023] [Indexed: 02/06/2024]
Abstract
The compounds bis-(morpholine-κN)gold(I) chloride, [Au(C4H9NO)2]Cl, 1, and bis-(morpholine-κN)gold(I) bromide, [Au(C4H9NO)2]Br, 2, crystallize isotypically in space group C2/c with Z = 4. The gold atoms, which are axially positioned at the morpholine rings, lie on inversion centres (so that the N-Au-N coordination is exactly linear) and the halide anions on twofold axes. The residues are connected by a classical hydrogen bond N-H⋯halide and by a short gold⋯halide contact to form a layer structure parallel to the bc plane. The morpholine oxygen atom is not involved in classical hydrogen bonding.
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Affiliation(s)
- Cindy Döring
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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25
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Liu YJ, Liu Y, Zang SQ. Solvation-Mediated Self-Assembly from Crystals to Helices of Protic Acyclic Carbene Au I -Enantiomers with Chirality Amplification. Angew Chem Int Ed Engl 2023; 62:e202311572. [PMID: 37732820 DOI: 10.1002/anie.202311572] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/12/2023] [Accepted: 09/21/2023] [Indexed: 09/22/2023]
Abstract
Constructing chiral supramolecular assembly and exploring the underlying mechanism are of great significance in promoting the development of circularly polarized luminescence (CPL)-active materials. Herein, we report a solvation-mediated self-assembly from single-crystals to helical nanofibers based on the first protic acyclic (methoxy)(amino)carbenes (pAMACs) AuI -enantiomers driven by a synergetic aurophilic interactions and H-bonds. Their aggregation-dependent thermally activated delayed fluorescence properties with high quantum yields (ΦFL ) up to 95 % were proved to be attributed to packing modes of Au⋅⋅⋅Au dimers with π-stacking or one-dimensional extended Au⋅⋅⋅Au chains. Via drop-casting method, supramolecular P- or M-helices were prepared. Detailed studies on the helices demonstrate that formations of extended helical Au⋅⋅⋅Au molecular chains amplify supramolecular chirality, leading to strong CPL with high dissymmetry factor (|glum |=0.030, ΦFL =67 %) and high CPL brightness (BCPL ) of 4.87×10-3 . Our findings bring new insights into the fabrication of helical structures to improve CPL performance by modifying aurophilic interactions.
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Affiliation(s)
- Ying-Jie Liu
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Key Laboratory of Special Environmental Functional Materials (Zhengzhou University), Ministry of Education, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Yu Liu
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Key Laboratory of Special Environmental Functional Materials (Zhengzhou University), Ministry of Education, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Shuang-Quan Zang
- Henan Key Laboratory of Crystalline Molecular Functional Materials, Key Laboratory of Special Environmental Functional Materials (Zhengzhou University), Ministry of Education, Henan International Joint Laboratory of Tumor Theranostical Cluster Materials, Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
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26
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Döring C, Jones PG. Crystal structures of five halido gold complexes involving piperidine or pyrrolidine as ligands or (protonated) as cations. Acta Crystallogr E Crystallogr Commun 2023; 79:1017-1027. [PMID: 37936840 PMCID: PMC10626954 DOI: 10.1107/s205698902300854x] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 09/27/2023] [Indexed: 11/09/2023]
Abstract
In bromido-(pyrrolidine-κN)gold(I) bis-(pyrrolidine-κN)gold(I) bromide, [AuBr(pyr)]·[Au(pyr)2]Br (pyr = pyrrolidine, C4H9N), 2, alternating [AuBr(pyr)] mol-ecules and [Au(pyr)2]+ cations are connected by aurophilic contacts to form infinite chains of residues parallel to the b axis. The chains are cross-linked by three N-H⋯Br- hydrogen bonds and an Au⋯Br contact to form a layer structure parallel to the ab plane. Tri-chlorido-(piperidine-κN)gold(III), [AuCl3(pip)] (pip = piperidine, C5H11N), 3, consists of mol-ecules with the expected square-planar coordination at the gold atom, which are connected by an N-H⋯Cl hydrogen bond and an Au⋯Cl contact to form a layer structure parallel to the ac plane. The structures of bis-(piperidinium) tetra-chlorido-aurate(III) chloride, (pipH)2[AuCl4]Cl, 4, and bis-(pyrrolidinium) tetra-bromido-aurate(III) bromide, (pyrH)2[AuBr4]Br, 6, are closely related but not isotypic. Compound 6 crystallizes in space group Ibam; the Au and two Br atoms of the anion lie in the mirror plane x, y, 0, whereas the bromide ions occupy special positions 0, 0.5, 0 and 0, 0.5, 0.25, with site symmetry 2/m. The NH2 group forms a hydrogen bond to one bromide ion, and also a three-centre hydrogen bond to the other bromide atom and to a metal-bonded Br atom. The packing involves chains of hydrogen-bonded pyrrolidinium and bromide ions parallel to the c axis, combined with a layer structure of [AuBr4]- and bromide anions, parallel to the ab plane and involving Au⋯Br and Br⋯Br contacts. Compound 4, however, crystallizes pseudosymmetrically in space group Iba2; two chlorine atoms of the anion lie on the twofold axis 0.5, 0.5, z, and there are two independent cations. The packing is closely similar to that of 6, but there are no N-H⋯Cl hydrogen bonds to metal-bonded chlorines. The contact distances Au⋯Cl are appreciably longer than their Au⋯Br counterparts in 6, whereas the Cl⋯Cl contact is much shorter than Br⋯Br in 6. Tri-bromido-(piperidine-κN)gold(III) crystallizes as its di-chloro-methane solvate, [AuBr3(pip)]·CH2Cl2, 7. It too displays a square-planar coordination at the gold atom. The packing involves hydrogen bonds N-H⋯Br, stacking of neighbouring AuBr3 units by Au⋯Br contacts, and a short Br⋯Br contact; these combine to form a layer structure parallel to the ac plane.
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Affiliation(s)
- Cindy Döring
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
| | - Peter G. Jones
- Institut für Anorganische und Analytische Chemie, Technische Universität Braunschweig, Hagenring 30, D-38106 Braunschweig, Germany
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27
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Lara D, Santibañez D, Miranda-Rojas S, Mendizabal F. Is there a Covalent Au(I)-Au(I) Bond in the trans-(AuX) 2 (X = F, Cl, Br, I) Structure? A Post-Hartree-Fock and Density Functional Theory Study. Inorg Chem 2023; 62:15421-15431. [PMID: 37690083 DOI: 10.1021/acs.inorgchem.3c01547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
We present an exhaustive exploration of the driving forces dominating the interaction between gold atoms in the trans-(AuX)2, where X is a halogen ligand. This work provides insights into the nature of the gold-gold contact in the trans-(AuX)2. The geometries and energies were calculated at the MP2, CCSD(T), and DFT-D3(BJ) (B3LYP, PBE, and TPSS) levels of theory. The results show a short Au-Au distance, typical of a covalent bond, but with a weak interaction energy associated with noncovalent interactions. It is established that the physical contributions from polarization and the electronic correlation forces are the most relevant at the post-Hartree-Fock level of theory. Also, the electrostatic term is attractive but with low contribution. Finally, the Wiberg indices and NBO analysis exposed a small covalent character between the gold atoms, revealing that this contribution is insufficient to explain the stability of the dimers. It is concluded that a sum of contributions makes it possible to establish an attraction between the gold atoms in the dimers studied beyond a classical aurophilic interaction.
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Affiliation(s)
- Dina Lara
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
| | - Daniel Santibañez
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
| | - Sebastián Miranda-Rojas
- Departamento de Ciencias Químicas, Facultad de Ciencias Exactas, Universidad Andrés Bello, Avenida República 275, 8370146 Santiago, Chile
- Centro de Química Teórica & Computacional (CQT&C), Facultad de Ciencias Exactas, Departamento de Ciencias Químicas, Universidad Andrés Bellos, Avenida República 275, 8370146 Santiago de Chile, Chile
| | - Fernando Mendizabal
- Departamento de Químicas, Facultad de Ciencias, Universidad de Chile, Casilla, 653 Santiago, Chile
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28
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Schulz J, Antala J, Rezazgui D, Císařová I, Štěpnička P. Synthesis, Structure, Reactivity, and Intramolecular Donor-Acceptor Interactions in a Phosphinoferrocene Stibine and Its Corresponding Phosphine Chalcogenides and Stiboranes. Inorg Chem 2023; 62:14028-14043. [PMID: 37566394 PMCID: PMC10466383 DOI: 10.1021/acs.inorgchem.3c02075] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Indexed: 08/12/2023]
Abstract
Ferrocene-based phosphines equipped with additional functional groups are versatile ligands for coordination chemistry and catalysis. This contribution describes a new compound of this type, combining phosphine and stibine groups at the ferrocene backbone, viz. 1-(diphenylphosphino)-1'-(diphenylstibino)ferrocene (1). Phosphinostibine 1 and the corresponding P-chalcogenide derivatives Ph2P(E)fcSbPh2 (1E, fc = ferrocene-1,1'-diyl, E = O, S, Se) were synthesized and further converted to the corresponding stiboranes Ph2P(E)fcSb(O2C6Cl4)Ph2 (6 and 6E) by oxidation with o-chloranil. All compounds were characterized by spectroscopic methods, X-ray diffraction analysis, cyclic voltammetry, and theoretical methods. Both NMR spectroscopy and DFT calculations confirmed the presence of P → Sb and P═O → Sb donor-acceptor interactions in 6 and 6O, triggered by the oxidation of the stibine moiety into Lewis acidic stiborane. The corresponding interactions in 6S and 6Se were of the same type but significantly weaker. A coordination study with AuCl as the model metal fragment revealed that the phosphine group acts as the "primary" coordination site, in line with its higher basicity. The obtained Au(I) complexes were applied as catalysts in the Au-catalyzed cyclization of N-propargylbenzamide and in the oxidative [2 + 2 + 1] cyclization of ethynylbenzene with acetonitrile and pyridine N-oxides. The catalytic results showed that the stibine complexes had worse catalytic performance than their phosphine counterparts, most likely due to the formation of weaker coordination bonds and hence poorer stabilization of the active metal species. Nevertheless, the stibine moiety could be used to fine-tune the properties of the ligated metal center by changing the oxidation state or substituents at the "remote" Sb atom.
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Affiliation(s)
- Jiří Schulz
- Department
of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Jakub Antala
- Department
of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - David Rezazgui
- Department
of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Ivana Císařová
- Department
of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Petr Štěpnička
- Department
of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
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29
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Györök M, Wagner T, Gründlinger P, Monkowius U, Zeppenfeld P. Aurophilic Molecules on Surfaces. Part I. (NapNC)AuCl on Au(110). ACS OMEGA 2023; 8:30109-30117. [PMID: 37636919 PMCID: PMC10448646 DOI: 10.1021/acsomega.3c02473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/19/2023] [Indexed: 08/29/2023]
Abstract
Aurophilicity is a well-known phenomenon in structural gold chemistry and is found in many crystals of Au(I) complexes. However, these attractive dispersion forces between and within complexes containing Au(I) moieties have not been well studied in ultrathin films. In this paper, we elucidate the interaction of chlorido(2-naphthyl isonitrile)gold(I) on and with Au(110) surfaces. Already during physical vapor deposition, the condensation of ultrathin films is monitored by photoelectron emission microscopy (PEEM) and by incremental and spectrally resolved changes in the optical reflectance (DDRS). Additional structural data obtained by STM and LEED reveal that the "crossed swords" packing motif known from the bulk is also present in thin films. The molecular arrangement changes several times during thin-film deposition.
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Affiliation(s)
- Michael Györök
- Institute
of Experimental Physics, Surface Science Division, Johannes Kepler University, Altenberger Straße 69, 4040 Linz, Austria
| | - Thorsten Wagner
- Institute
of Experimental Physics, Surface Science Division, Johannes Kepler University, Altenberger Straße 69, 4040 Linz, Austria
| | - Petra Gründlinger
- Institute
of Experimental Physics, Surface Science Division, Johannes Kepler University, Altenberger Straße 69, 4040 Linz, Austria
| | - Uwe Monkowius
- School
of Education, Johannes Kepler University, Chemistry, Altenberger Straße
69, 4040 Linz, Austria
| | - Peter Zeppenfeld
- Institute
of Experimental Physics, Surface Science Division, Johannes Kepler University, Altenberger Straße 69, 4040 Linz, Austria
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30
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Lamprecht A, Lindl F, Endres L, Krummenacher I, Braunschweig H. Coinage metal complexes of BN analogues of m-terphenyl ligands. Chem Commun (Camb) 2023; 59:10149-10152. [PMID: 37530102 DOI: 10.1039/d3cc03467d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
We report the synthesis of a series of group 11 metal complexes with sterically demanding anionic nitrogen ligands based on the 1,2-azaborinine motif. The ligands, which share structural similarities with m-terphenyls, have been used to stabilize two-coordinate phosphine complexes and dimeric complexes with close contacts between the metal centers. Spectroscopic, crystallographic, and theoretical investigations reveal close parallels to the related m-terphenyl complexes, including metallophilic interactions in the dimers.
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Affiliation(s)
- Anna Lamprecht
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
- Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Felix Lindl
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
- Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Lukas Endres
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
- Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Ivo Krummenacher
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
- Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Holger Braunschweig
- Institute for Inorganic Chemistry, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany.
- Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, Würzburg 97074, Germany
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31
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Kikuchi K, Imoto H, Naka K. Robust and highly emissive copper(I) halide 1D-coordination polymers with triphenylarsine and a series of bridging N-heteroaromatic co-ligands. Dalton Trans 2023; 52:11168-11175. [PMID: 37505189 DOI: 10.1039/d3dt00784g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Various 1D-coordination polymers with dinuclear rhombic {Cu2X2} cores (X = Br, I) were synthesized using a spontaneous evaporation method employing triphenylarsine (AsPh3) and six types of bidentate N-heteroaromatic co-ligands. The coordination polymers exhibited intense emission even at 298 K (quantum yield: up to 0.60), and their emission color was dependent on the N-heteroaromatic co-ligand. The emission efficiencies of these coordination polymers were higher than those of the discrete complexes with AsPh3 and monodentate N-heteroaromatic co-ligands reported in our previous work. In addition, the luminescence of these coordination polymers was more resistant to mechanical stimuli than that of the discrete ones.
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Affiliation(s)
- Kazuma Kikuchi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Gashokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Horký F, Neubrand M, Císařová I, Schulz J, Štěpnička P. Synthesis of Hybrid Ligands with Nitrile and Cage Phosphane Donor Groups and their Applications in Gold-Mediated Reactions. Chempluschem 2023; 88:e202300196. [PMID: 37283065 DOI: 10.1002/cplu.202300196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/08/2023]
Abstract
Altering the donor properties of phosphane ligands through substituent variation is an established tool in coordination chemistry and catalysis. This contribution describes the synthesis of two new hybrid donors (L) combining 1,3,5,7-tetramethyl-2,4,6-trioxa-8-phosphaadamantane-8-yl (PCg) and nitrile donor groups at different molecular scaffolds, viz. ferrocene-1,1'-diyl (fc) and 1,2-phenylene. These ligands were used to prepare dimeric Au(I) complexes [Au2 (μ(P,N)-L)2 ][SbF6 ]2 , which were evaluated as silver-free, preformed catalysts in Au-mediated cycloisomerization of (Z)-3-methylpent-2-en-4-yn-1-ol to 2,3-dimethylfuran. The catalyst featuring the ferrocene-based ligand, viz., [Au2 (μ(P,N)-CgPfcCN)2 ][SbF6 ]2 , showed the best catalytic performance at low catalyst loading (0.5 or 0.15 mol.%), which exceeded that of its diphenylphosphanyl analog [Au2 (μ(P,N)-Ph2 PfcCN)2 ][SbF6 ]2 studied earlier and the prototypical Au(I) precatalyst [Au(PPh3 )(MeCN)][SbF6 ].
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Affiliation(s)
- Filip Horký
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Maren Neubrand
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
- Visiting Erasmus student from, Institute of Inorganic Chemistry, University of Stuttgart (Germany)
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague, Czech Republic
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Rodríguez-Gobernado A, Blasco D, Monge M, López-de-Luzuriaga JM. Spontaneous Water-Promoted Self-Aggregation of a Hydrophilic Gold(I) Complex Due to Ligand Sphere Rearrangement. Molecules 2023; 28:5680. [PMID: 37570650 PMCID: PMC10420115 DOI: 10.3390/molecules28155680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/20/2023] [Accepted: 07/25/2023] [Indexed: 08/13/2023] Open
Abstract
Aggregating gold(I) complexes in solution through short aurophilic contacts promotes new photoluminescent deactivation pathways (aggregation-induced emission, AIE). The time dependence of spontaneous AIE is seldom studied. We examine the behavior of complex [Au(N9-hypoxanthinate)(PTA)] (1) in an aqueous solution with the aid of variable-temperature NMR, time-resolved UV-Vis and photoluminescence spectroscopy, and PGSE NMR. The studies suggest that partial ligand scrambling in favor of the ionic [Au(PTA)2][Au(N9-hypoxanthinate)2] pair followed by anion oligomerization takes place. The results are rationalized with the aid of computational calculations at the TD-DFT level of theory and IRI analysis of the electron density.
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Affiliation(s)
| | - Daniel Blasco
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain;
| | - Miguel Monge
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain;
| | - José M. López-de-Luzuriaga
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006 Logroño, Spain;
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34
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Lei Z, Zhao P, Pei XL, Ube H, Ehara M, Shionoya M. Photoluminescence control by atomically precise surface metallization of C-centered hexagold(i) clusters using N-heterocyclic carbenes. Chem Sci 2023; 14:6207-6215. [PMID: 37325149 PMCID: PMC10266449 DOI: 10.1039/d3sc01976d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 04/28/2023] [Indexed: 06/17/2023] Open
Abstract
The properties of metal clusters are highly dependent on their molecular surface structure. The aim of this study is to precisely metallize and rationally control the photoluminescence properties of a carbon(C)-centered hexagold(i) cluster (CAuI6) using N-heterocyclic carbene (NHC) ligands with one pyridyl, or one or two picolyl pendants and a specific number of silver(i) ions at the cluster surface. The results suggest that the photoluminescence of the clusters depends highly on both the rigidity and coverage of the surface structure. In other words, the loss of structural rigidity significantly reduces the quantum yield (QY). The QY in CH2Cl2 is 0.04 for [(C)(AuI-BIPc)6AgI3(CH3CN)3](BF4)5 (BIPc = N-isopropyl-N'-2-picolylbenzimidazolylidene), a significant decrease from 0.86 for [(C)(AuI-BIPy)6AgI2](BF4)4 (BIPy = N-isopropyl-N'-2-pyridylbenzimidazolylidene). This is due to the lower structural rigidity of the ligand BIPc because it contains a methylene linker. Increasing the number of capping AgI ions, i.e., the coverage of the surface structure, increases the phosphorescence efficiency. The QY for [(C)(AuI-BIPc2)6AgI4(CH3CN)2](BF4)6 (BIPc2 = N,N'-di(2-pyridyl)benzimidazolylidene) recovers to 0.40, 10-times that of the cluster with BIPc. Further theoretical calculations confirm the roles of AgI and NHC in the electronic structures. This study reveals the atomic-level surface structure-property relationships of heterometallic clusters.
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Affiliation(s)
- Zhen Lei
- Department of Chemistry, Graduate School of Science, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Pei Zhao
- Research Center for Computational Science, Institute for Molecular Science Myodaiji Okazaki Aichi 444-8585 Japan
| | - Xiao-Li Pei
- Department of Chemistry, Graduate School of Science, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Hitoshi Ube
- Department of Chemistry, Graduate School of Science, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Masahiro Ehara
- Research Center for Computational Science, Institute for Molecular Science Myodaiji Okazaki Aichi 444-8585 Japan
| | - Mitsuhiko Shionoya
- Department of Chemistry, Graduate School of Science, The University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
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35
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Romo-Islas G, Ward JS, Rissanen K, Rodríguez L. Heterometallic Au(I)-Cu(I) Clusters: Luminescence Studies and 1O 2 Production. Inorg Chem 2023; 62:8101-8111. [PMID: 37191273 DOI: 10.1021/acs.inorgchem.3c00046] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Two different organometallic gold(I) compounds containing naphthalene and phenanthrene as fluorophores and 2-pyridyldiphenylphosphane as the ancillary ligand were synthesized (compounds 1 with naphthalene and 2 with phenanthrene). They were reacted with three different copper(I) salts with different counterions (PF6-, OTf-, and BF4-; OTf = triflate) to obtain six Au(I)/Cu(I) heterometallic clusters (compounds 1a-c for naphthalene derivatives and 2a-c for phenanthrene derivatives). The heterometallic compounds present red pure room-temperature phosphorescence in both solution, the solid state, and air-equilibrated samples, as a difference with the dual emission recorded for the gold(I) precursors 1 and 2. The presence of Au(I)-Cu(I) metallophilic contacts has been identified using single-crystal X-ray diffraction structure resolution of two of the compounds, which play a direct role in the resulting red-shifted emission with respect to the gold(I) homometallic precursors. Polystyrene (PS) and poly(methyl methacrylate) (PMMA) polymeric matrices were doped with our luminescent compounds, and the resulting changes in their emissive properties were analyzed and compared with those previously recorded in the solution and the solid state. All complexes were tested to analyze their ability to produce 1O2 and present very good values of ΦΔ up to 50%.
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Affiliation(s)
- Guillermo Romo-Islas
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Jas S Ward
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014 Jyvaskyla, Finland
| | - Kari Rissanen
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014 Jyvaskyla, Finland
| | - Laura Rodríguez
- Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
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36
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Peng B, Zhou JF, Ding M, Shan BQ, Chen T, Zhang K. Structural water molecules dominated p band intermediate states as a unified model for the origin on the photoluminescence emission of noble metal nanoclusters: from monolayer protected clusters to cage confined nanoclusters. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2023; 24:2210723. [PMID: 37205011 PMCID: PMC10187113 DOI: 10.1080/14686996.2023.2210723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 04/29/2023] [Accepted: 04/29/2023] [Indexed: 05/21/2023]
Abstract
In the past several decades, noble metal nanoclusters (NMNCs) have been developed as an emerging class of luminescent materials due to their superior photo-stability and biocompatibility, but their luminous quantum yield is relatively low and the physical origin of the bright photoluminescence (PL) of NMNCs remain elusive, which limited their practical application. As the well-defined structure and composition of NMNCs have been determined, in this mini-review, the effect of each component (metal core, ligand shell and interfacial water) on their PL properties and corresponded working mechanism were comprehensively introduced, and a model that structural water molecules dominated p band intermediate state was proposed to give a unified understanding on the PL mechanism of NMNCs and a further perspective to the future developments of NMNCs by revisiting the development of our studies on the PL mechanism of NMNCs in the past decade.
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Affiliation(s)
- Bo Peng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jia-Feng Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Meng Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Bing-Qian Shan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Tong Chen
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Kun Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
- Laboratoire de chimie, Ecole Normale Supérieure de Lyon, Institut de Chimie de Lyon, Université de Lyon, Lyon, France
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, Shandong, PR China
- Institute of Eco-Chongming, Shanghai, China
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37
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Yan LL, Wing-Wah Yam V. Photo- and Temperature-Induced Reversible Structural Transformation between Dodecanuclear and Pentadecanuclear Gold(I) Sulfido Complexes. J Am Chem Soc 2023; 145:7454-7461. [PMID: 36943768 DOI: 10.1021/jacs.3c00096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Stimuli-responsive structural transformation has attracted much attention for its potential to mimic the behavior of biological transformations and functions. Here, two unprecedented dodecanuclear and pentadecanuclear gold(I) sulfido clusters (denoted trans-Au12 and trans-Au15, respectively) with impressive stimuli-responsive interconversion have been obtained by taking advantage of the judiciously designed tridentate phosphine ligand Ltrans as the building block. Both UV light and temperature can be applied to trigger the structural conversions between trans-Au12 and trans-Au15. In addition, NMR, high-resolution electrospray ionization mass spectrometry, and UV-vis absorption spectroscopy have been employed to monitor the transformation process and decipher the mechanism of structural conversion. This work not only provides a paradigm to investigate photo-induced cluster-to-cluster transformation based on polydentate phosphine ligands but also offers a new direction for the construction of the stimuli-responsive materials.
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Affiliation(s)
- Liang-Liang Yan
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
| | - Vivian Wing-Wah Yam
- Institute of Molecular Functional Materials, State Key Laboratory of Synthetic Chemistry, and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 999077, P. R. China
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38
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Frogley BJ, Hill AF. Synthesis and reactivity of 9,10-bis(4-trimethylsilylethynylbuta-1,3-diynyl)anthracene derived chromophores. Dalton Trans 2023; 52:4574-4584. [PMID: 36928328 DOI: 10.1039/d3dt00147d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
9,10-Bis(4-trimethylsilylethynylbutadiynyl)anthracene is readily availabe from the reaction of anthraquinone and LiCCCCSiMe3 followed by reduction with Sn(II) and serves as a convenient building block via desilylation and palladium-mediated C-C coupling processes for the construction of further butadiynylanthracenes terminated by metal complexes, arenes, haloarenes and alkynyl functionalities.
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Affiliation(s)
- Benjamin J Frogley
- Australian National University Research School of Chemistry, Canberra, Australian Capital Territory, Australia.
| | - Anthony F Hill
- Australian National University Research School of Chemistry, Canberra, Australian Capital Territory, Australia.
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39
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Tzeng B, Hung J, Wu C, Lee G. Supramolecular assembly and solvochromic luminescence of a Au(I) complex containing di(4‐pyridylmethyl)aminedithiocarbamate. J CHIN CHEM SOC-TAIP 2023. [DOI: 10.1002/jccs.202300067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Affiliation(s)
- Biing‐Chiau Tzeng
- Department of Chemistry and Biochemistry National Chung Cheng University Chiayi Taiwan
| | - Jun‐Wei Hung
- Department of Chemistry and Biochemistry National Chung Cheng University Chiayi Taiwan
| | - Chung‐Lun Wu
- Department of Chemistry and Biochemistry National Chung Cheng University Chiayi Taiwan
| | - Gene‐Hsiang Lee
- Department of Chemistry National Taiwan University Taipei Taiwan
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40
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Relativistic effects on the chemical bonding properties of the heavier elements and their compounds. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.215000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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41
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Makino Y, Yoshida M, Hayashi S, Sasaki T, Takamizawa S, Kobayashi A, Kato M. Elastic and bright assembly-induced luminescent crystals of platinum(II) complexes with near-unity emission quantum yield. Dalton Trans 2023. [PMID: 36847788 DOI: 10.1039/d3dt00192j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Molecular crystals of Pt(II) complexes with metallophilic interactions can provide bright assembly-induced luminescence with colour tunability. However, the brittleness of many of these crystals makes their application in flexible optical materials difficult. Herein, we have achieved the elastic deformation of crystals of polyhalogenated Pt(II) complexes exhibiting bright assembly-induced luminescence. A crystal of [Pt(bpic)(dFppy)] (Hbpic = 5-bromopicolinic acid, HdFppy = 2-(2,4-difluorophenyl)pyridine) and a co-crystal of [Pt(bpic)(dFppy)] and [Pt(bpic)(ppy)] (Hppy = 2-phenylpyridine) were found to exhibit significant elastic deformation due to their highly anisotropic interaction topologies. While the crystal of [Pt(bpic)(dFppy)] exhibited monomer-based ligand-centred 3ππ* emission with an emission quantum yield of 0.40, the co-crystal exhibited bright, triplet metal-metal-to-ligand charge transfer (3MMLCT) emission owing to Pt⋯Pt interactions, thereby achieving a significantly higher emission quantum yield of 0.94.
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Affiliation(s)
- Yusuke Makino
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Masaki Yoshida
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.,Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan.
| | - Shotaro Hayashi
- School of Environmental Science and Engineering and Research Centre for Molecular Design, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami, Kochi 782-8502, Japan
| | - Toshiyuki Sasaki
- Department of Materials System Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Satoshi Takamizawa
- Department of Materials System Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Atsushi Kobayashi
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
| | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan.,Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo 669-1330, Japan.
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42
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Blasco D, Reboiro F, Sundholm D, Olmos ME, Monge M, López-de-Luzuriaga JM. A "gold standard" computational proof for the existence of gold(III) aurophilicity. Dalton Trans 2023; 52:2219-2222. [PMID: 36779753 DOI: 10.1039/d2dt03731a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
The existence of aurophilic gold(III)⋯gold(III) interactions has for a long time been neglected due to structural arguments and comparison with the aurophilicity of gold(I) compounds. We show with calculations at the CCSD(T) level of theory that the [AuIII(CH3)3(NH3)]2 dimer has a metallophilic dispersion interaction between the gold(III) atoms of 10.5 kJ mol-1. The aurophilic interaction is illustrated by topological QTAIM calculations and IRI analysis.
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Affiliation(s)
- Daniel Blasco
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain. .,Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), FIN-00014, Helsinki, Finland.
| | - Félix Reboiro
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain.
| | - Dage Sundholm
- Department of Chemistry, Faculty of Science, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), FIN-00014, Helsinki, Finland.
| | - M Elena Olmos
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain.
| | - Miguel Monge
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain.
| | - José M López-de-Luzuriaga
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Madre de Dios 53, 26006, Logroño, Spain.
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43
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Prakasham AP, Patil SK, Nettem C, Dey S, Rajaraman G, Ghosh P. Discrete Singular Metallophilic Interaction in Stable Large 12-Membered Binuclear Silver and Gold Metallamacrocycles of Amido-Functionalized Imidazole and 1,2,4-Triazole-Derived N-Heterocyclic Carbenes. ACS OMEGA 2023; 8:6439-6454. [PMID: 36844527 PMCID: PMC9947987 DOI: 10.1021/acsomega.2c06729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Metallophilic interactions were observed in four pairs of 12-membered metallamacrocyclic silver and gold complexes of imidazole-derived N-heterocyclic carbenes (NHCs), [1-(R1)-3-N-(2,6-di-(R2)-phenylacetamido)-imidazol-2-ylidene]2M2 [R1 = p-MeC6H4, R2 = Me, M = Ag (1b) and Au (1c); R1 = Me, R2 = i-Pr, M = Ag (2b) and Au (2c); R1 = Et, R2 = i-Pr, M = Ag (3b) and Au (3c)], and a 1,2,4-triazole-derived N-heterocyclic carbene (NHC), [1-(i-Pr)-4-N-(2,6-di-(i-Pr)-phenylacetamido)-1,2,4-triazol-2-ylidene]2M2 [M = Ag (4b) and Au (4c)]. The X-ray diffraction, photoluminescence, and computational studies indicate the presence of metallophilic interactions in these complexes, which are significantly influenced by the sterics and the electronics of the N-amido substituents of the NHC ligands. The argentophilic interaction in the silver 1b-4b complexes was stronger than the aurophilic interaction in the gold 1c-4c complexes, with the metallophilic interaction decreasing in the order 4b > 1b > 1c > 4c > 3b > 3c > 2b > 2c. The 1b-4b complexes were synthesized from the corresponding amido-functionalized imidazolium chloride 1a-3a and the 1,2,4-triazolium chloride 4a salts upon treatment with Ag2O. The reaction of 1b-4b complexes with (Me2S)AuCl gave the gold 1c-4c complexes.
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44
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Uhlmann C, Feuerstein TJ, Gamer MT, Roesky PW. Coinage Metal Bis(amidinate) Complexes as Building Blocks for Self-Assembled One-Dimensional Coordination Polymers. Chemistry 2023; 29:e202300289. [PMID: 36762591 DOI: 10.1002/chem.202300289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/09/2023] [Accepted: 02/09/2023] [Indexed: 02/11/2023]
Abstract
The pyridyl functionalized amidinate [{PyC≡CC(NDipp)2 }Li(thf)2 ]n was used to synthesize a series of bis-amidinate complexes [{PyC≡CC(NDipp)2 }2 M2 ] (M=Cu, Ag, Au) with fully supported metallophilic interactions. These metalloligands were then used as building blocks for the synthesis of one-dimensional heterobimetallic coordination polymers using Zn(hfac)2 (hfac=hexaflouroacetylacetonate) for self-assembly. Interestingly, the three coordination polymers [{PyC≡CC(NDipp)2 }2 M2 ][Zn(hfac)2 ] (M=Cu, Ag, Au), exhibit a zig zag shape in the solid state. To achieve linear coordination geometry other connectors such as M'(acac) (M'=Ni, Co) (acac=acetylacetonate) were investigated. The thus obtained compounds [{PyC≡CC(NDipp)2 }2 Cu2 ][M'(acac)2 ] (M'=Ni, Co) are indeed linear heterobimetallic coordination polymers featuring a metalloligand backbone with fully supported metallophilic interactions.
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Affiliation(s)
- Cedric Uhlmann
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Michael T Gamer
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, 76131, Karlsruhe, Germany
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45
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Schulz J, Antala J, Císařová I, Štěpnička P. Beyond phosphorus: synthesis, reactivity, coordination behaviour and catalytic properties of 1,1'-bis(diphenylstibino)ferrocene. Dalton Trans 2023; 52:1198-1211. [PMID: 36545831 DOI: 10.1039/d2dt03770j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Compared to their widely studied phosphine counterparts, ferrocene stibines have received only marginal attention thus far. This paper describes the synthesis of 1,1'-bis(diphenylstibino)ferrocene (1*), which is an antimony analogue of the ubiquitous dppf, and our investigations into the reactivity and coordination behaviour of this compound. Thus, distibine 1 was oxidised to stiboranes fc(SbPh2X2)2 (X = Cl, 2*; F, 6*; fc = ferrocene-1,1'-diyl) and to stibine-stiborane Ph2SbfcSbPh2F2 (5*). Compounds 2 and 6 were easily hydrolysed to produce ferrocenophanes fc[SbPh2XOSbPh2X] (X = Cl, 3*; F, 7*). Removing the halogen from 3 with silver(I) salts afforded the corresponding ferrocenophanes with O-bound oxyanions, fc[SbPh2ZOSbPh2Z] (Z = NO3, 4a*; ClO4, 4b*), which were alternatively prepared from 2 and also converted back to 2 by adding a chloride source. Through investigations into the coordination behaviour of distibine 1, the following compounds were isolated and characterised: [(μ-ClO4)2{Ag(1-κ2Sb,Sb')}2] (8*), [Ag(1-κ2Sb,Sb')2]X (X = ClO4, 9a; SbF6, 9b*), [(μ(Sb,Sb')-1){(arene)MCl2}2] (10*, 11*) and [(arene)MCl(1-κ2Sb,Sb')][PF6] (12*, 13*; 10, 12: M/arene = Ru/η6-p-cymene, 11, 13; Rh/η5-C5Me5), [(η5-C5Me5)RuCl(1-κ2Sb,Sb')] (14), [MCl2(1-κ2Sb,Sb')] (M = Pd, 15*; Pt, 16*), [Pd(1-κ2Sb,Sb')2]X2 (X = BF4, 17a; SbF6, 17b*), [Pd(η2-ma)(1-κ2Sb,Sb')] (18*; ma = maleic anhydride), [(μ(Sb,Sb')-1)(AuCl)2] (19*), and [Au(1-κ2Sb,Sb')2]X (X = AuCl2, 20a*; SbF6, 20b*). Inspection of the structural parameters suggested that complexes featuring 1 exhibit less sterically strained structures than their dppf analogues due to longer M-Sb and Sb-C bonds, which reduce crowding around the ligated metal centre. Cyclic voltammetry and DFT calculations revealed that the primary electrochemical oxidation of 1 is reversible and occurs at the ferrocene unit. Based on preliminary catalytic tests in Suzuki-Miyaura biaryl coupling, Pd-1 complexes exhibited a lower efficiency than their respective Pd-dppf analogues. (An asterisk indicates that the crystal structure has been determined.).
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Affiliation(s)
- Jiří Schulz
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Jakub Antala
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Ivana Císařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
| | - Petr Štěpnička
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic.
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46
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Lu Z, Archambault CM, Li S, Syed U, Wang S, Kumar A, Shen G, Liu Z, Omary MA, Yan H. Modulating the Extent of Anisotropic Cuprophilicity via High Pressure with Piezochromic Luminescence Sensitization. J Phys Chem Lett 2023; 14:508-515. [PMID: 36626164 DOI: 10.1021/acs.jpclett.2c03284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Metallophilicity has been widely studied as a fundamental supramolecular interaction. However, the extent and directionality thereof remain controversial. A major obstacle lies in the difficulty to separately control the geometry and chemical composition. Herein, we address this challenge by modulating metallophilicity with mechanical pressure. Using a multinuclear Cu(I) complex as model system, we report anomalous anisotropies of (supra)molecular structures, vibrations, and interaction energies upon isotropic compression as well as concomitant (essentially turn-on) piezochromic luminescence enhancement with ∼103 modulation. The in situ characterizations indicate opposite behaviors of contact distances and cuprophilic interactions for intermolecular vs intramolecular Cu-Cu pairs under pressure. Theoretical calculations break down the attractive and repulsive forces associated with cuprophilicity, its spontaneous 4p-3d hybridization origin, and direction-dependent interaction strength. The use of isotropic mechanical force reveals the intrinsic anisotropy of metallophilicity in multinuclear systems.
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Affiliation(s)
- Zhou Lu
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Cynthia M Archambault
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Shan Li
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
- Department of Materials Science and Engineering, University of North Texas, 1155 Union Circle #305310, Denton, Texas76203, United States
| | - Umar Syed
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Sicheng Wang
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Abinaya Kumar
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Guoyin Shen
- High Pressure Collaborative Access Team (HPCAT), X-ray Science Division, Argonne National Laboratory, Argonne, Illinois60439, United States
| | - Zhenxian Liu
- Department of Physics, University of Illinois Chicago, Chicago, Illinois60607, United States
| | - Mohammad A Omary
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
| | - Hao Yan
- Department of Chemistry, University of North Texas, 1155 Union Circle #305070, Denton, Texas76203, United States
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47
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Tzeng BC, Liao CC, Jung PY, Chen SY, Sun BJ, Cheng WC, Chang AHH, Lee GH. Luminescent Pt(II) Complexes Containing (1-Aza-15-crown-5)dithiocarbamate and (1-Aza-18-crown-6)dithiocarbamate: Mechanochromic and Solvent-Induced Luminescence. Inorg Chem 2023; 62:916-929. [PMID: 36584668 DOI: 10.1021/acs.inorgchem.2c03726] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The strong tendency to stack in the solid state and rich luminescence for the Pt(II) complexes makes them potential candidates as new mechanochromic materials and sensing applications. Six mononuclear complexes [Pt(ppy)(O4NCS2)] (1), [Pt(bpy)(O4NCS2)]ClO4 (2), [Pt(ppy)(O5NCS2)] (3), [Pt(phen)(O4NCS2)]ClO4·CH3OH (5a), [Pt(phen)(O4NCS2)]ClO4 (5b), and [Pt(phen)(O5NCS2)]ClO4 (6a), one dinuclear complex [Pt2(phen)2(NaO5NCS2)2(ClO4)3]ClO4 (6b), and one one-dimensional (1-D) coordination polymer {[Pt2(bpy)2(NaO5NCS2)2(ClO4)2](ClO4)2}n (4) were synthesized by reacting [Pt(ppy)Cl]2, Pt(bpy)Cl2, and Pt(phen)Cl2 (ppy = 2-phenylpyridine, bpy = 2,2'-bipyridine, and phen = 1,10-phenanthroline) with (1-aza-15-crown-5)dithiocarbamate (O4NCS2) or (1-aza-18-crown-6)dithiocarbamate (O5NCS2), respectively, which have been isolated and structurally characterized by X-ray diffraction. Neutral complexes 1 and 3 contain no intermolecular Pt(II)···Pt(II) contact, whereas cationic complexes 2, 5a, 5b, and 6a with ClO4- as counteranions show alternative intermolecular Pt(II)···Pt(II) contacts of 3.535/4.091, 3.480/5.001, 3.527/4.571, and 3.446/4.987 Å in the solid state, respectively. Interestingly, complex 4 forms a 1-D coordination polymer through coordination between the encapsulated Na+ ions inside the azacrown ether rings of O5NCS2 and ClO4- anions with respective intra- and intermolecular Pt(II)···Pt(II) contacts of 3.402 and 3.847 Å in crystal lattices, whereas a dinuclear complex 6b was surprisingly formed and also connected by the encapsulated Na+ ions and ClO4- anions with alternative intra- and intermolecular Pt(II)···Pt(II) contacts of 3.650 and 3.677/4.4.372 Å, respectively. Upon excitation, complexes 1 and 3 showed similar vibronic luminescence at 507, 534, and 502, 532 nm, respectively, and the other complexes 2 and 4-6 showed broad luminescence with maxima at 537-567 nm. The B3LYP/LanL2DZ calculation was carried out and used to clarify their excited-state properties. In addition, the powder samples for complexes 1-4 almost showed no energy shift for the luminescence and significantly those of complexes 5-6 exhibited the mechanochromic luminescence upon grinding. It is noted that complexes 5a and 6a only showed minor red shifts (i.e., from 544 to 556 nm for complex 5a and from 551 to 565 nm for complex 6a), whereas complex 6b exhibited a remarkable red shift from 558 to 603 nm upon grinding. Besides, their luminescence reversibility was also examined toward various solvents.
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Affiliation(s)
- Biing-Chiau Tzeng
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi 62102, Taiwan
| | - Chi-Chung Liao
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi 62102, Taiwan
| | - Peng-Yuan Jung
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi 62102, Taiwan
| | - Si-Ying Chen
- Department of Chemistry, National Dong Hwa University, 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
| | - Bing-Jian Sun
- Department of Chemistry, National Dong Hwa University, 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
| | - Wei-Chung Cheng
- Department of Chemistry and Biochemistry, National Chung Cheng University, 168 University Road, Min-Hsiung, Chiayi 62102, Taiwan
| | - Agnes H H Chang
- Department of Chemistry, National Dong Hwa University, 1, Sec. 2, Da Hsueh Road, Shoufeng, Hualien 97401, Taiwan
| | - Gene-Hsiang Lee
- Department of Chemistry, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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48
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Lemon CM, Powers DC, Huynh M, Maher AG, Phillips AA, Tripet BP, Nocera DG. Ag(III)···Ag(III) Argentophilic Interaction in a Cofacial Corrole Dyad. Inorg Chem 2023; 62:3-17. [PMID: 36538590 DOI: 10.1021/acs.inorgchem.2c02285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Metallophilic interactions between closed-shell metal centers are exemplified by d10 ions, with Au(I) aurophilic interactions as the archetype. Such an interaction extends to d8 species, and examples involving Au(III) are prevalent. Conversely, Ag(III) argentophilic interactions are uncommon. Here, we identify argentophilic interactions in silver corroles, which are authentic Ag(III) species. The crystal structure of a monomeric silver corrole is a dimer in the solid state, and the macrocycle exhibits an atypical domed conformation. In order to evaluate whether this represents an authentic metallophilic interaction or a crystal-packing artifact, the analogous cofacial or "pacman" corrole was prepared. The conformation of the monomer was recapitulated in the silver pacman corrole, exhibiting a short 3.67 Å distance between metal centers and a significant compression of the xanthene backbone. Theoretical calculations support the presence of a rare Ag(III)···Ag(III) argentophilic interaction in the pacman complex.
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Affiliation(s)
- Christopher M Lemon
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States.,Department of Chemistry and Biochemistry, Montana State University (MSU), P.O. Box 173400, Bozeman, Montana 59717, United States
| | - David C Powers
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Michael Huynh
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Andrew G Maher
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Austin A Phillips
- Department of Chemistry and Biochemistry, Montana State University (MSU), P.O. Box 173400, Bozeman, Montana 59717, United States
| | - Brian P Tripet
- Department of Chemistry and Biochemistry, Montana State University (MSU), P.O. Box 173400, Bozeman, Montana 59717, United States
| | - Daniel G Nocera
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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49
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Iwamura M, Urayama R, Fukui A, Nozaki K, Liu L, Kuramochi H, Takeuchi S, Tahara T. Spectroscopic mapping of the gold complex oligomers (dimer, trimer, tetramer, and pentamer) by excited-state coherent nuclear wavepacket motion in aqueous solutions. Phys Chem Chem Phys 2023; 25:966-974. [PMID: 36515079 DOI: 10.1039/d2cp04823j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
We investigate the excited-state dynamics of the [Au(CN)2-] oligomers following photo-initiated intermolecular Au-Au bond formation by carrying out femtosecond time-resolved absorption and emission measurements at various concentrations (0.080-0.6 mol dm-3) with different photoexcitation wavelengths (290-340 nm). The temporal profiles of the time-resolved absorption signals exhibit clear oscillations arising from the Au-Au stretch coherent wavepacket motion of the excited-state oligomers, which is initiated with the photo-induced Au-Au bond formation. The frequency of the observed oscillation is changed with the change of the concentration, excitation wavelength, and wavelength of the excited-state absorption monitored, reflecting the change in the size of the oligomers detected. Fourier transforms (FTs) of the oscillations provide 2D plots of the FT amplitude against the oscillation frequency versus the detected wavelengths. Because the FT amplitude exhibits a node at the peak wavelength of the absorption of the species that gives rise to the oscillation, the 2D plots enabled us to determine the peak wavelength of the excited-state absorption of the dimer, trimer, tetramer, and pentamer. We also performed femtosecond time-resolved absorption measurements for the 0.3 mol dm-3 solution with 260 nm photoexcitation, which is the condition employed in previous time-resolved X-ray studies (e.g., K. H. Kim et al. Nature, 2015, 518 (7539), 385-389). It was found that various excited-state oligomers, including the dimer, were simultaneously generated under this condition, although the analysis of the previous time-resolved X-ray studies was made by assuming that only the excited-state trimer was generated. The obtained results show that the excited-state dynamics of the trimer claimed based on the time-resolved X-ray data is questionable and that re-analysis and re-examining of its data are necessary.
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Affiliation(s)
- Munetaka Iwamura
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan.
| | - Rina Urayama
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan.
| | - Airi Fukui
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan.
| | - Koichi Nozaki
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan.
| | - Li Liu
- Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Hikaru Kuramochi
- Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Satoshi Takeuchi
- Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tahei Tahara
- Molecular Spectroscopy Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Ultrafast Spectroscopy Research Team, RIKEN Center for Advanced Photonics (RAP), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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50
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Blasco D, Sundholm D. Gold(I)···Lanthanide(III) Bonds in Discrete Heterobimetallic Compounds: A Combined Computational and Topological Study. Inorg Chem 2022; 61:20308-20315. [PMID: 36475614 PMCID: PMC9768751 DOI: 10.1021/acs.inorgchem.2c02717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The chemical nature of the ligand-unsupported gold(I)-lanthanide(III) bond in the proposed [LnIII(η5-Cp)2][AuIPh2] (Ln-Au; LnIII = LaIII, EuIII, or LuIII; Cp = cyclopentadienide; Ph = phenyl) models is examined from a theoretical viewpoint. The covalent bond-like Au-Ln distances (Au-La, 2.95 Å; Au-Eu, 2.85 Å; Au-Lu, 2.78 Å) result from a strong interaction between the oppositely charged fragments (ΔEintMP2 > 600 kJ mol-1), including the aforementioned metal-metal bond and additional LnIII-Cipso and C-H···π interactions. The Au-Ln bond has been characterized as a chemical bond rather than a strong metallophilic interaction with the aid of energy decomposition analysis, interaction region indicator, and quantum theory of atoms in molecules topological tools. The chemical nature of the Au-Ln bond cannot be fully ascribed to a covalent or an ionic model; an intermediate situation or a charge shift bond is proposed. The [AuIPh2]- anion has also been identified as a suitable lanthanide(III) emission sensitizer for La-Au and Lu-Au.
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Affiliation(s)
- Daniel Blasco
- Department
of Chemistry, Faculty of Science, University
of Helsinki, P.O. Box 55
(A.I. Virtasen aukio 1), FIN-00014Helsinki, Finland,Departamento
de Química, Centro de Investigación en Síntesis
Química (CISQ), Universidad de La
Rioja, Madre de Dios 53, 26006Logroño, Spain, or
| | - Dage Sundholm
- Department
of Chemistry, Faculty of Science, University
of Helsinki, P.O. Box 55
(A.I. Virtasen aukio 1), FIN-00014Helsinki, Finland,
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