1
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Yuan Q, Feng W, Cheng L. Theoretical study of the saturation and nature of the hydrogen bonds to gold. J Chem Phys 2023; 159:174304. [PMID: 37916593 DOI: 10.1063/5.0171292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 10/16/2023] [Indexed: 11/03/2023] Open
Abstract
Traditional hydrogen bonds are well-known to exhibit directionality and saturation. By contrast, gold involved hydrogen bonds (GHBs) have been extensively studied but remain lack of in-depth understanding towards the intrinsic nature and saturation property. This work exemplifies three series of complexes: [L-Au-L]-⋯(HF)n (L = H, CH3, (CH3)3; n = 1-8) containing GHBs to dig into the intrinsic nature with the aid of multiple theoretical analysis methods, finding that the formation of GHB is highly subject to orbital interactions along with steric hindrance. Moreover, the saturation level of GHBs largely depends on the ligand attached to the gold center, since different ligands typically possess varying electron-giving ability and steric volume. This work confirms the coexistence of as many as 6 GHBs for one Au atom and thoroughly studies the saturation level of GHBs, which will provide new insights into GHBs and facilitate future synthesis of more complicated gold complexes.
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Affiliation(s)
- Qinqin Yuan
- Department of Chemistry, Anhui University, Hefei 230601, China
| | - Wanwan Feng
- Department of Chemistry, Anhui University, Hefei 230601, China
| | - Longjiu Cheng
- Department of Chemistry, Anhui University, Hefei 230601, China
- Key Laboratory of Functional Inorganic Materials of Anhui Province, Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Anhui University), Ministry of Education, Hefei 230601, China
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2
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Zierkiewicz W, Kizior B, Michalczyk M, Jezierska A, Scheiner S. Pd and Pt metal atoms as electron donors in σ-hole bonded complexes. Phys Chem Chem Phys 2023; 25:26172-26184. [PMID: 37740339 DOI: 10.1039/d3cp03171c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Quantum calculations provide a systematic assessment of the ability of Group 10 transition metals M = Pd and Pt to act as an electron donor within the context of pnicogen, chalcogen, and halogen bonds. These M atoms are coordinated in a square planar geometry, attached to two N atoms of a modified phenanthrene unit, as well as two ligand atoms Cl, Br, or I. As the Lewis acid, a series of AFn molecules were chosen, which could form a pnicogen bond (A = P, As, Sb), chalcogen bond (A = S, Se, Te) or halogen bond (A = Cl, Br, I) with M. These noncovalent bonds are fairly strong, varying between 6 and 20 kcal mol-1, with the occupied dz2 orbital of M acting as the origin of charge transferred to the acid. Pt forms somewhat stronger bonds than Pd, and the bond strength rises with the size of the A atom of the acid. Within the context of smaller A atoms, the bond strength rises in the order pnicogen < chalcogen < halogen, but this distinction vanishes for the fifth-row A atoms. The nature of the ligand atoms on M has little bearing on the bond strength. Based on the Harmonic Oscillator Model of Aromaticity (HOMA) index, the ZB, YB and XB bonds were shown to have only a subtle effect on the ring electronic structures.
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Affiliation(s)
- Wiktor Zierkiewicz
- Wrocław University of Science and Technology, Faculty of Chemistry, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
| | - Beata Kizior
- Wrocław University of Science and Technology, Faculty of Chemistry, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
| | - Mariusz Michalczyk
- Wrocław University of Science and Technology, Faculty of Chemistry, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland.
| | - Aneta Jezierska
- University of Wroclaw, Faculty of Chemistry, ul. F. Joliot-Curie 14, 50-383 Wroclaw, Poland
| | - Steve Scheiner
- Utah State University Logan, Department of Chemistry and Biochemistry, Utah 84322-0300, USA.
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3
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Li Y, Chen YX, Liu ZF. OH -···Au Hydrogen Bond and Its Effect on the Oxygen Reduction Reaction on Au(100) in Alkaline Media. J Phys Chem Lett 2022; 13:9035-9043. [PMID: 36150066 DOI: 10.1021/acs.jpclett.2c02774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Using ab initio molecular dynamics simulations with fully solvated ions, we demonstrate that solvated OH- forms a stable hydrogen bond with Au(100). Unlike the hydrogen bond between H2O and Au reported previously, which is more favorable for negatively charged Au, the OH-···Au interaction is stabilized when a small positive charge is added to the metal slab. For electro-catalysis, this means that while OH2···Au plays a significant role in the hydrogen evolution reaction, OH-···Au could be a significant factor in the oxygen reduction reaction in alkaline media. It also points to a fundamental difference in the mechanism of oxygen reduction between gold and platinum electrodes.
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Affiliation(s)
- Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin 999077, Hong Kong, China
| | - Yan-Xia Chen
- Hefei National Research Center for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China
| | - Zhi-Feng Liu
- Department of Chemistry and Centre for Scientific Modeling and Computation, Chinese University of Hong Kong, Shatin 999077, Hong Kong, China
- CUHK Shenzhen Research Institute, No. 10, 2nd Yuexing Road, Nanshan District, Shenzhen 518057, China
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4
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Piña MDLN, Burguera S, Buils J, Crespí MÀ, Morales JE, Pons J, Bauzá A, Frontera A. Substituent effects in π-hole regium bonding interactions between Au(p-X-Py)2 complexes and Lewis bases: an ab initio study. Chemphyschem 2022; 23:e202200010. [PMID: 35191571 DOI: 10.1002/cphc.202200010] [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: 01/06/2022] [Revised: 02/09/2022] [Indexed: 11/10/2022]
Abstract
For the first time, long range substituent effects in regium bonding interactions involving Au(I) linear complexes are investigated. The Au(I) atom is coordinated to two para -substituted pyridine ligands. The interaction energy (RI-MP2/def2-TZVP level of theory) of the π-hole regium bonding assemblies is affected by the pyridine substitution. The Hammett's plot representations for several sets of Lewis bases have been carried out and, in all cases, good regression plots have been obtained (interaction energies vs. Hammett's σ parameter). The Bader's theory of "atoms-in-molecules" has been used to evidence that the electron density computed at the bond critical point that connects the Au-atom to the electron donor can be used as a measure of bond order in regium bonding. Several X-ray structures retrieved from the Cambridge Structural Database (CSD) provide some experimental support to the existence of regium π-hole bonding in [Au(Py) 2 ] + derivatives.
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Affiliation(s)
| | | | - Jordi Buils
- Universitat de les Illes Balears, Chemistry, SPAIN
| | | | | | - Jordi Pons
- Universitat de les Illes Balears, Chemistry, SPAIN
| | | | - Antonio Frontera
- Universitat Illes Balears, Chemistry, Crta de Valldemossa km 7.5, 07122, Palma de Mallorca, SPAIN
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5
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Maltz LT, Wilkins LC, Gabbaï FP. Augmenting Metallobasicity to Modulate Gold Hydrogen Bonding. Chem Commun (Camb) 2022; 58:9650-9653. [DOI: 10.1039/d2cc03328c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the synthesis and characterization of two phosphine gold carbinol species exhibiting intramolecular Au···H-O hydrogen bonding. Increasing the metallobasicity of gold through chloride to phenyl ligand substitution produced an...
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6
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Darmandeh H, Löffler J, Tzouras NV, Dereli B, Scherpf T, Feichtner K, Vanden Broeck S, Van Hecke K, Saab M, Cazin CSJ, Cavallo L, Nolan SP, Gessner VH. Au⋅⋅⋅H-C Hydrogen Bonds as Design Principle in Gold(I) Catalysis. Angew Chem Int Ed Engl 2021; 60:21014-21024. [PMID: 34313367 PMCID: PMC8518757 DOI: 10.1002/anie.202108581] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 01/15/2023]
Abstract
Secondary ligand-metal interactions are decisive in many catalytic transformations. While arene-gold interactions have repeatedly been reported as critical structural feature in many high-performance gold catalysts, we herein report that these interactions can also be replaced by Au⋅⋅⋅H-C hydrogen bonds without suffering any reduction in catalytic performance. Systematic experimental and computational studies on a series of ylide-substituted phosphines featuring either a PPh3 (Ph YPhos) or PCy3 (Cy YPhos) moiety showed that the arene-gold interaction in the aryl-substituted compounds is efficiently compensated by the formation of Au⋅⋅⋅H-C hydrogen bonds. The strongest interaction is found with the C-H moiety next to the onium center, which due to the polarization results in remarkably strong interactions with the shortest Au⋅⋅⋅H-C hydrogen bonds reported to date. Calorimetric studies on the formation of the gold complexes further confirmed that the Ph YPhos and Cy YPhos ligands form similarly stable complexes. Consequently, both ligands showed the same catalytic performance in the hydroamination, hydrophenoxylation and hydrocarboxylation of alkynes, thus demonstrating that Au⋅⋅⋅H-C hydrogen bonds are equally suited for the generation of highly effective gold catalysts than gold-arene interactions. The generality of this observation was confirmed by a comparative study between a biaryl phosphine ligand and its cyclohexyl-substituted derivative, which again showed identical catalytic performance. These observations clearly support Au⋅⋅⋅H-C hydrogen bonds as fundamental secondary interactions in gold catalysts, thus further increasing the number of design elements that can be used for future catalyst construction.
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Affiliation(s)
- Heidar Darmandeh
- Chair of Inorganic Chemistry IIFaculty of Chemistry and BiochemistryRuhr-University BochumUniversitätsstraße 15044801BochumGermany
| | - Julian Löffler
- Chair of Inorganic Chemistry IIFaculty of Chemistry and BiochemistryRuhr-University BochumUniversitätsstraße 15044801BochumGermany
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Busra Dereli
- Physical Sciences & Engineering Division (PSE)KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Thorsten Scherpf
- Chair of Inorganic Chemistry IIFaculty of Chemistry and BiochemistryRuhr-University BochumUniversitätsstraße 15044801BochumGermany
| | - Kai‐Stephan Feichtner
- Chair of Inorganic Chemistry IIFaculty of Chemistry and BiochemistryRuhr-University BochumUniversitätsstraße 15044801BochumGermany
| | - Sofie Vanden Broeck
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Catherine S. J. Cazin
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Luigi Cavallo
- Physical Sciences & Engineering Division (PSE)KAUST Catalysis Center (KCC)King Abdullah University of Science and Technology (KAUST)Thuwal23955-6900Saudi Arabia
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable ChemistryGhent UniversityKrijgslaan 281, S-39000GhentBelgium
| | - Viktoria H. Gessner
- Chair of Inorganic Chemistry IIFaculty of Chemistry and BiochemistryRuhr-University BochumUniversitätsstraße 15044801BochumGermany
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7
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Darmandeh H, Löffler J, Tzouras NV, Dereli B, Scherpf T, Feichtner K, Vanden Broeck S, Van Hecke K, Saab M, Cazin CSJ, Cavallo L, Nolan SP, Gessner VH. Au⋅⋅⋅H−C Hydrogen Bonds as Design Principle in Gold(I) Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108581] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Heidar Darmandeh
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Julian Löffler
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Nikolaos V. Tzouras
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Busra Dereli
- Physical Sciences & Engineering Division (PSE) KAUST Catalysis Center (KCC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Thorsten Scherpf
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Kai‐Stephan Feichtner
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Sofie Vanden Broeck
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Kristof Van Hecke
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Marina Saab
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Catherine S. J. Cazin
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Luigi Cavallo
- Physical Sciences & Engineering Division (PSE) KAUST Catalysis Center (KCC) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia
| | - Steven P. Nolan
- Department of Chemistry and Centre for Sustainable Chemistry Ghent University Krijgslaan 281, S-3 9000 Ghent Belgium
| | - Viktoria H. Gessner
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr-University Bochum Universitätsstraße 150 44801 Bochum Germany
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8
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Park G, Gabbaï FP. The Elusive Au(I)···H-O Hydrogen Bond: Experimental Verification. J Am Chem Soc 2021; 143:12494-12498. [PMID: 34369751 DOI: 10.1021/jacs.1c07035] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Our long-standing interest in atypical bonding situations has recently led us to target complexes in which a metallobasic gold(I) center is hydrogen-bonded to a nearby OH functionality. Here, we report on the synthesis and characterization of two neutral gold(I) indazol-3-ylidene complexes bearing a carbinol or silanol group at the 4-position. As indicated by X-ray diffraction, 1H NMR spectroscopy, IR spectroscopy, and extensive computational modeling, the OH group of these derivatives is engaged in a bona fide Au···H-O interaction. In addition to shedding light on an elusive bonding situation, these results also indicate that increasing the acidity of the OH functionality is not necessarily beneficial to the stability of the Au(I)···H-O interaction.
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Affiliation(s)
- Gyeongjin Park
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
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9
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Pérez-Bitrián A, Baya M, Casas JM, Martín A, Menjón B. Hydrogen bonding to metals as a probe for an inverted ligand field. Dalton Trans 2021; 50:5465-5472. [PMID: 33908974 DOI: 10.1039/d1dt00597a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron-rich, late transition metals are known to act as hydrogen-bonding (HBd) acceptors. In this regard, Pt(ii) centres in square-planar environments are particularly efficient. It is however puzzling that no convincing experimental evidence is currently available for the isoelectronic neighbour Au(iii) being involved in HBd interactions. We report now on the synthesis and characterisation of two series of isoleptic and isoelectronic (d8) compounds [(CF3)3Pt(L)]- and (CF3)3Au(L), where the L ligands are based on the quinoline frame and have been selected to favour HBd with the metal centre. Strong HBd interactions were actually found in the Pt(ii) compounds, based on structural and spectroscopic evidence, and they were further confirmed by theoretical calculations. In contrast, no evidence was obtained in the Au(iii) case. In order to find the reason underlying this general disparity, we undertook a detailed theoretical analysis of the model systems [(CF3)3Pt(py)]- and (CF3)3Au(py). This study revealed that the filled dz2 orbital is the HOMO in the case of Pt(ii), but is buried in the lower energy levels in the case of Au(iii). The sharply different electronic configurations involve ligand-field inversion on going from Pt to the next element Au. This is not a gradual but an abrupt change, which invalidates Au(iii) as a HBd-acceptor wherever ligand-field inversion occurs.
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Affiliation(s)
- Alberto Pérez-Bitrián
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
| | - Miguel Baya
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
| | - José M Casas
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
| | - Antonio Martín
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
| | - Babil Menjón
- Instituto de Síntesis Química y Catálisis Homogénea (iSQCH), CSIC-Universidad de Zaragoza, Zaragoza, Spain.
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10
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Abstract
We reported the concept of a directed design of multicomponent catalytic systems of the hydrogenation of unsaturated hydrocarbons.
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Affiliation(s)
- Yuliya Yu. Titova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of Russian Academy of Sciences
- 664033 Irkutsk
- Russia
| | - Fedor K. Schmidt
- Department of Chemistry
- Irkutsk State University
- 664003 Irkutsk
- Russia
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11
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Lin X, Mo Y. Resonance-Assisted but Antielectrostatic Intramolecular Au···H–O Hydrogen Bonding in Gold(I) Complexes: A Computational Verification. Inorg Chem 2020; 60:460-467. [DOI: 10.1021/acs.inorgchem.0c03252] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuhui Lin
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, Sichuan 610031, China
| | - Yirong Mo
- Department of Nanoscience, Joint School of Nanoscience and Nanoengineering, University of North Carolina at Greensboro, Greensboro, North Carolina 27401, United States
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12
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Santos GFN, Carvalho LC, Oliveira DAS, Rego DG, Bueno MA, Oliveira BG. The definitive challenge of forming uncommon pseudo‐π···H–F and C···H–F hydrogen bonds on cyclic and cubic nonpolar hydrocarbons. J PHYS ORG CHEM 2020. [DOI: 10.1002/poc.4098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Leila Cardoso Carvalho
- Centro das Ciências Exatas e das Tecnologias Universidade Federal do Oeste da Bahia Barreiras Brazil
| | | | - Danilo Guimarães Rego
- Centro das Ciências Exatas e das Tecnologias Universidade Federal do Oeste da Bahia Barreiras Brazil
| | - Mauro Alves Bueno
- Centro das Ciências Exatas e das Tecnologias Universidade Federal do Oeste da Bahia Barreiras Brazil
| | - Boaz Galdino Oliveira
- Centro das Ciências Exatas e das Tecnologias Universidade Federal do Oeste da Bahia Barreiras Brazil
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13
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Rocchigiani L, Bochmann M. Recent Advances in Gold(III) Chemistry: Structure, Bonding, Reactivity, and Role in Homogeneous Catalysis. Chem Rev 2020; 121:8364-8451. [DOI: 10.1021/acs.chemrev.0c00552] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Luca Rocchigiani
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
| | - Manfred Bochmann
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich NR47TJ, United Kingdom
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14
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Estévez L. C-HAu interactions and optical properties of [(P,P) 4Au 6] 2+ molecular gold nanoclusters. Dalton Trans 2020; 49:4797-4804. [PMID: 32211720 DOI: 10.1039/d0dt00464b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Two hexagold diphosphine-stabilized [(P,P)4Au6]2+ molecular nanoclusters with the same [core + exo] arrangement differing in the linker (phenylene or trimethylene) connecting the two P-donor sites have been subjected to theoretical studies with the aim of shedding light on two main questions. On one hand, from a previous study [J. Vícha, C. Foroutan-Nejadand M. Straka,Nat. Commun., 2019, 10, 1643], it is still unclear whether short C-H2Au contacts revealed in the corresponding crystal structures are just forced by bulky P(Ph)2 groups and, on the other hand, to what extent the linker affects the visible band position [M. A. Bakar, M. Sugiuchi, M. Iwasaki, Y. Shichibuand K. Konishi, Nat. Commun., 2017, 8, 576]. Here, it is demonstrated that even in simpler model systems in which bulky groups were replaced by PH2 groups, C-H2Au hydrogen bonding interactions are retained and show comparable values, as measured by NBO and QTAIM analyses, to those of 1 and 2. These analyses further confirmed a stronger HB in 1 than in 2. Also, the comparison of model systems without and with a linker connecting the phosphine groups showed a bathochromic shift of 47 and 60 nm, revealing the key role of the linker. The Δρ(r)EE-GS plots of 1 and 2 revealed electron density depletion in the inter-nuclear C-H2 region upon electronic transition unveiling its contribution to their optical properties.
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Affiliation(s)
- Laura Estévez
- Departamento de Química Física, Universidade de Vigo, As Lagoas-Marcosende s/n, 36310 Galicia, Spain.
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15
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Kumar M, Francisco JS. Evidence of the Elusive Gold-Induced Non-classical Hydrogen Bonding in Aqueous Environments. J Am Chem Soc 2020; 142:6001-6006. [PMID: 32126169 DOI: 10.1021/jacs.9b05493] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
The ability of a gold ion to act as a proton acceptor in hydrogen bonding continues to remain an open question. Heavy-atom effects and secondary competitive interactions in gold complexes make it challenging to precisely establish the identity of gold-ion-induced hydrogen bonding via experimental techniques. In such situations, computational chemistry may play an important role. Herein we have performed Born-Oppenheimer molecular dynamics simulations to study the behavior of [Au(CH3)2)]- in bulk and interfacial aqueous environments. The simulation results suggest that the [Au(CH3)2)]- complex forms one and two gold-ion-induced hydrogen bonds with the water molecules in interfacial and bulk environments, respectively. The calculated probabilities of key hydrogen-bonded configurations of [Au(CH3)2)]-, combined distribution functions, and diffusion coefficients further support this unusual hydrogen-bonding interaction. In summary, the present results suggest that gold-ion-induced hydrogen bonding in an actual solvent environment may be feasible. These results will improve our understanding about the role of weak interactions in transition metal complexes and, thus, will have implications in catalysis and supramolecular assemblies.
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Affiliation(s)
- Manoj Kumar
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Joseph S Francisco
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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16
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Scheiner S, Michalczyk M, Zierkiewicz W. Coordination of anions by noncovalently bonded σ-hole ligands. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213136] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Chambrier I, Hughes DL, Jeans RJ, Welch AJ, Budzelaar PHM, Bochmann M. Do Gold(III) Complexes Form Hydrogen Bonds? An Exploration of Au III Dicarboranyl Chemistry. Chemistry 2020; 26:939-947. [PMID: 31721328 DOI: 10.1002/chem.201904790] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Indexed: 01/15/2023]
Abstract
The reaction of 1,1'-Li2 [(2,2'-C2 B10 H10 )2 ] with the cyclometallated gold(III) complex (C^N)AuCl2 afforded the first examples of gold(III) dicarboranyl complexes. The reactivity of these complexes is subject to the trans-influence exerted by the dicarboranyl ligand, which is substantially weaker than that of non-carboranyl anionic C-ligands. In line with this, displacement of coordinated pyridine by chloride is only possible under forcing conditions. While treatment of (C^N)Au{(2,2'-C2 B10 H10 )2 } (2) with triflic acid leads to Au-C rather than Au-N bond protonolysis, aqueous HBr cleaves the Au-N bond to give the pyridinium bromo complex 7. The trans-influence of a series of ligands including dicarboranyl and bis(dicarboranyl) was assessed by means of DFT calculations. The analysis demonstrated that it was not sufficient to rely exclusively on geometric descriptors (calculated or experimental) when attempting to rank ligands for their trans influence. Complex (C^N)Au(C2 B10 H11 )2 containing two non-chelating dicarboranyl ligands was prepared similar to 2. Its reaction with trifluoroacetic acid also leads to Au-N cleavage to give trans-(Hpy^C)Au(OAcF )(C2 B10 H11 )2 (8). In crystals of 8 the pyridinium N-H bond points towards the metal centre, while in 7 it is bent away. The possible contribution of gold(III)⋅⋅⋅H-N hydrogen bonding in these complexes was investigated by DFT calculations. The results show that, unlike the situation for platinum(II), there is no evidence for an energetically significant contribution by hydrogen bonding in the case of gold(III).
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Affiliation(s)
- Isabelle Chambrier
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - David L Hughes
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
| | - Rebekah J Jeans
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Alan J Welch
- Institute of Chemical Sciences, Heriot-Watt University, Edinburgh, EH14 4AS, UK
| | - Peter H M Budzelaar
- Department of Chemistry, University of Naples Federico II, Via Cintia, 80126, Naples, Italy
| | - Manfred Bochmann
- School of Chemistry, University of East Anglia, Norwich Research Park, Norwich, NR4 7TJ, UK
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18
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Raubenheimer HG, Dobrzańska L. Interaction between Cu and Ag free ions and central metals in complexes with XHn units (X = B, Si, N, O, C, Al, Zn, Mg; n = 1, 2). Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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19
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Groenewald F, Raubenheimer HG, Dillen J, Esterhuysen C. Computational investigation of Au·H hydrogen bonds involving neutral AuI N-heterocyclic carbene complexes and amphiprotic binary hydrides. J Mol Model 2019; 25:135. [DOI: 10.1007/s00894-019-4018-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Accepted: 03/29/2019] [Indexed: 10/26/2022]
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20
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Schmidbaur H. Erfolgreiche Machbarkeitsstudien für Wasserstoffbrücken zu Gold: Au⋅⋅⋅H‐X. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902526] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hubert Schmidbaur
- Department ChemieTechnische Universität München Lichtenbergstraße 4 85747 Garching b. M. Deutschland
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21
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Schmidbaur H. Proof of Concept for Hydrogen Bonding to Gold, Au⋅⋅⋅H-X. Angew Chem Int Ed Engl 2019; 58:5806-5809. [PMID: 30941857 DOI: 10.1002/anie.201902526] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Indexed: 11/07/2022]
Abstract
Convincing and consistent evidence for the existence of hydrogen bonding to gold has been obtained. An ammonium or pyridinium group has been shown to be an efficient hydrogen bond donor unit for gold(I) coordination centers, and the assembly leads to the structural pattern typical for standard hydrogen bonds. This constitutes the first rigorous, scrutinizing, and comprehensive study of hydrogen bonds to a metal atom, with gold being an ideal model element because of relativistic effects.
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Affiliation(s)
- Hubert Schmidbaur
- Department Chemie, Technische Universität München, Lichtenbergstr. 4, 85747, Garching b. M., Germany
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22
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Chval Z, Dvořáčková O, Chvalová D, Burda JV. Square-Planar Pt(II) and Ir(I) Complexes as the Lewis Bases: Donor-Acceptor Adducts with Group 13 Trihalides and Trihydrides. Inorg Chem 2019; 58:3616-3626. [PMID: 30816711 DOI: 10.1021/acs.inorgchem.8b02765] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The stability and properties of donor-acceptor adducts of square-planar Pt(II) and Ir(I) complexes (designated as PtX, IrX, or generally MX complexes) with trihydrides and trihalides of group 13 elements of general formula YZ3 (Y = B, Al, Ga; Z = H, F, Cl, Br) were studied theoretically using DFT methodology in the gas phase. MX complexes were represented by wide range of the ligand environment which included model complexes [Ir(NH3)3X]0 and cis-[Pt(NH3)2X2]0 (X = H, CH3, F, Cl, Br) and isoelectronic complexes [Ir(NNN)(CH3)]0 and [Pt(NCN)(CH3)]0 with tridentate NNN and NCN pincer ligands. MX complexes acted as the Lewis bases donating electron density from the doubly occupied 5d z2 atomic orbital of the metal M atom to the empty valence p z orbital of Y whose evidence was clearly provided by the natural atomic orbital (NAO) analysis. This charge transfer led to the formation of pentacoordinated square pyramidal MX·(YZ3) adducts with M·Y dative bond. Binding energies were -44.7 and -75.2 kcal/mol for interaction of GaF3 as the strongest acid with PtNCN and IrNNN pincer ligands complexes. Only M·B bonds had covalent character although MX·BZ3 adducts were the least stable due to large values of Pauli repulsion and deformation energies. The highest degree of covalent character was found for adducts of BH3 in all series of structures studied. Al and Ga adducts showed remarkably similar behavior with respect to geometry and binding energies.
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Affiliation(s)
- Zdeněk Chval
- Faculty of Health and Social Sciences , University of South Bohemia , J. Boreckého 27 , 370 11 České Budějovice , Czech Republic
| | - Olga Dvořáčková
- Faculty of Health and Social Sciences , University of South Bohemia , J. Boreckého 27 , 370 11 České Budějovice , Czech Republic.,Faculty of Science , University of South Bohemia , Branišovská 1760 , 370 05 České Budějovice , Czech Republic
| | - Daniela Chvalová
- Biology Centre of the Czech Academy of Sciences , Institute of Entomology , Branišovská 31 , 370 05 České Budějovice , Czech Republic
| | - Jaroslav V Burda
- Faculty of Mathematics and Physics , Charles University , Ke Karlovu 3 , Prague 2 121 16 , Czech Republic
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23
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Straka M, Andris E, Vícha J, Růžička A, Roithová J, Rulíšek L. Spectroscopic and Computational Evidence of Intramolecular AuI
⋅⋅⋅H+
−N Hydrogen Bonding. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201811982] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Michal Straka
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
| | - Erik Andris
- Department of Organic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 12843 Prague 2 Czech Republic
| | - Jan Vícha
- Centre of Polymer Systems; Tomas Bata University in Zlín; tř. Tomáše Bati 5678 76001 Zlín Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry; Faculty of Chemical Technology; University of Pardubice; 53210 Pardubice Czech Republic
| | - Jana Roithová
- Department of Organic Chemistry; Faculty of Science; Charles University; Hlavova 2030/8 12843 Prague 2 Czech Republic
- Institute for Molecules and Materials; Radboud University; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences; Flemingovo náměstí 2 16610 Prague 6 Czech Republic
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24
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Straka M, Andris E, Vícha J, Růžička A, Roithová J, Rulíšek L. Spectroscopic and Computational Evidence of Intramolecular Au I ⋅⋅⋅H + -N Hydrogen Bonding. Angew Chem Int Ed Engl 2019; 58:2011-2016. [PMID: 30600866 PMCID: PMC6519277 DOI: 10.1002/anie.201811982] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/21/2018] [Indexed: 11/10/2022]
Abstract
Despite substantial evidence of short Au⋅⋅⋅H−X contacts derived from a number of X‐ray structures of AuI compounds, the nature of AuI⋅⋅⋅H bonding in these systems has not been clearly understood. Herein, we present the first spectroscopic evidence for an intramolecular AuI⋅⋅⋅H+−N hydrogen bond in a [Cl−Au−L]+ complex, where L is a protonated N‐heterocyclic carbene. The complex was isolated in the gas phase and characterized with helium‐tagging infrared photodissociation (IRPD) spectra, in which H+−N‐mode‐derived bands evidence the intramolecular AuI⋅⋅⋅H+−N bond. Quantum chemical calculations reproduce the experimental IRPD spectra and allow to characterize the intramolecular Au⋅⋅⋅H+−N bonding with a short rAu⋅⋅⋅H distance of 2.17 Å and an interaction energy of approximately −10 kcal mol−1. Various theoretical descriptors of chemical bonding calculated for the Au⋅⋅⋅H+−N interaction provide strong evidence for a hydrogen bond of moderate strength.
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Affiliation(s)
- Michal Straka
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
| | - Erik Andris
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 12843, Prague 2, Czech Republic
| | - Jan Vícha
- Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 76001, Zlín, Czech Republic
| | - Aleš Růžička
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, 53210, Pardubice, Czech Republic
| | - Jana Roithová
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 12843, Prague 2, Czech Republic.,Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135, 6525, AJ, Nijmegen, The Netherlands
| | - Lubomír Rulíšek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo náměstí 2, 16610, Prague 6, Czech Republic
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25
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Rigoulet M, Massou S, Sosa Carrizo ED, Mallet-Ladeira S, Amgoune A, Miqueu K, Bourissou D. Evidence for genuine hydrogen bonding in gold(I) complexes. Proc Natl Acad Sci U S A 2019; 116:46-51. [PMID: 30567973 PMCID: PMC6320517 DOI: 10.1073/pnas.1817194116] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The ability of gold to act as proton acceptor and participate in hydrogen bonding remains an open question. Here, we report the synthesis and characterization of cationic gold(I) complexes featuring ditopic phosphine-ammonium (P,NH+) ligands. In addition to the presence of short Au∙∙∙H contacts in the solid state, the presence of Au∙∙∙H-N hydrogen bonds was inferred by NMR and IR spectroscopies. The bonding situation was extensively analyzed computationally. All features were consistent with the presence of three-center four-electron attractive interactions combining electrostatic and orbital components. The role of relativistic effects was examined, and the analysis is extended to other recently described gold(I) complexes.
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Affiliation(s)
- Mathilde Rigoulet
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Stéphane Massou
- Institut de Chimie de Toulouse, Fédération de Recherche Université - CNRS No 2599, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - E Daiann Sosa Carrizo
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement, Unité Mixte de Recherche Université - CNRS No 5254, Université de Pau et des Pays de l'Adour, 64053 Pau Cedex 09, France
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse, Fédération de Recherche Université - CNRS No 2599, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Abderrahmane Amgoune
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement, Unité Mixte de Recherche Université - CNRS No 5254, Université de Pau et des Pays de l'Adour, 64053 Pau Cedex 09, France
| | - Didier Bourissou
- Laboratoire Hétérochimie Fondamentale et Appliquée, Unité Mixte de Recherche Université - CNRS No 5069, Université Paul Sabatier, 31062 Toulouse Cedex 09, France;
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26
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Groenewald F, Dillen J, Esterhuysen C. Ligand-driven formation of halogen bonds involving Au(i) complexes. NEW J CHEM 2018. [DOI: 10.1039/c8nj01510d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A theoretical investigation shows that the Au(i) centre in a variety of complexes can behave as a halogen bond acceptor.
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Affiliation(s)
- Ferdinand Groenewald
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Stellenbosch
- South Africa
| | - Jan Dillen
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Stellenbosch
- South Africa
| | - Catharine Esterhuysen
- Department of Chemistry and Polymer Science
- Stellenbosch University
- Stellenbosch
- South Africa
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