1
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Juda CE, Casaday CE, Clarke RM, Litak NP, Campbell BM, Chang T, Zheng SL, Chen YS, Betley TA. Lewis Acid Supported Nickel Nitrenoids. Angew Chem Int Ed Engl 2023; 62:e202313156. [PMID: 37830508 DOI: 10.1002/anie.202313156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/14/2023]
Abstract
Metalation of the polynucleating ligand F,tbs LH6 (1,3,5-C6 H9 (NC6 H3 -4-F-2-NSiMe2 t Bu)3 ) with two equivalents of Zn(N(SiMe3 )2 )2 affords the dinuclear product (F,tbs LH2 )Zn2 (1), which can be further deprotonated to yield (F,tbs L)Zn2 Li2 (OEt2 )4 (2). Transmetalation of 2 with NiCl2 (py)2 yields the heterometallic, trinuclear cluster (F,tbs L)Zn2 Ni(py) (3). Reduction of 3 with KC8 affords [KC222 ][(F,tbs L)Zn2 Ni] (4) which features a monovalent Ni centre. Addition of 1-adamantyl azide to 4 generates the bridging μ3 -nitrenoid adduct [K(THF)3 ][(F,tbs L)Zn2 Ni(μ3 -NAd)] (5). EPR spectroscopy reveals that the anionic cluster possesses a doublet ground state (S =1 / 2 ${{ 1/2 }}$ ). Cyclic voltammetry of 5 reveals two fully reversible redox events. The dianionic nitrenoid [K2 (THF)9 ][(F,tbs L)Zn2 Ni(μ3 -NAd)] (6) was isolated and characterized while the neutral redox isomer was observed to undergo both intra- and intermolecular H-atom abstraction processes. Ni K-edge XAS studies suggest a divalent oxidation state for the Ni centres in both the monoanionic and dianionic [Zn2 Ni] nitrenoid complexes. However, DFT analysis suggests Ni-borne oxidation for 5.
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Affiliation(s)
- Cristin E Juda
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Claire E Casaday
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Ryan M Clarke
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Nicholas P Litak
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Brandon M Campbell
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Tieyan Chang
- ChemMatCARS Beamline, The University of Chicago, Advanced Photon Source, Argonne, IL 60429, USA
| | - Shao-Liang Zheng
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
| | - Yu-Sheng Chen
- ChemMatCARS Beamline, The University of Chicago, Advanced Photon Source, Argonne, IL 60429, USA
| | - Theodore A Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford St, Cambridge, MA 02138, USA
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2
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Maiola ML, Buss JA. Accessing Ta/Cu Architectures via Metal-Metal Salt Metatheses: Heterobimetallic C-H Bond Activation Affords μ-Hydrides. Angew Chem Int Ed Engl 2023; 62:e202311721. [PMID: 37831544 DOI: 10.1002/anie.202311721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/15/2023]
Abstract
We employ a metal-metal salt metathesis strategy to access low-valent tantalum-copper heterometallic architectures (Ta-μ2 -H2 -Cu and Ta-μ3 -H2 -Cu3 ) that emulate structural elements proposed for surface alloyed nanomaterials. Whereas cluster assembly with carbonylmetalates is well precedented, the use of the corresponding polyarene transition metal anions is underexplored, despite recognition of these highly reactive fragments as storable sources of atomic Mn- . Our application of this strategy provides structurally unique early-late bimetallic species. These complexes incorporate bridging hydride ligands during their syntheses, the origin of which is elucidated via detailed isotopic labelling studies. Modification of ancillary ligand sterics and electronics alters the mechanism of bimetallic assembly; a trinuclear complex resulting from dinuclear C-H activation is demonstrated as an intermediate en route to formation of the bimetallic. Further validating the promise of this rational, bottom-up approach, a unique tetranuclear species was synthesized, featuring a Ta centre bearing three Ta-Cu interactions.
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Affiliation(s)
- Michela L Maiola
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109, USA
| | - Joshua A Buss
- Willard Henry Dow Laboratory, Department of Chemistry, University of Michigan, 930 N. University Avenue, Ann Arbor, MI 48109, USA
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3
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Hu B, Wen WY, Sun HY, Wang YQ, Du KZ, Ma W, Zou GD, Wu ZF, Huang XY. Single-Crystal Superstructures via Hierarchical Assemblies of Giant Rubik's Cubes as Tertiary Building Units. Angew Chem Int Ed Engl 2023; 62:e202219025. [PMID: 36646648 DOI: 10.1002/anie.202219025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/11/2023] [Accepted: 01/16/2023] [Indexed: 01/18/2023]
Abstract
Intricate superstructures possess unusual structural features and promising applications. The preparation of superstructures with single-crystalline nature are conducive to understanding the structure-property relationship, however, remains an intriguing challenge. Herein we put forward a new hierarchical assembly strategy towards rational and precise construction of intricate single-crystal superstructures. Firstly, two unprecedented superclusters in Rubik's cube's form with a size of ≈2×2×2 nm3 are constructed by aggregation of eight {Pr4 Sb12 } oxohalide clusters as secondary building units (SBUs). Then, the Rubik's cubes further act as isolable tertiary building units (TBUs) to assemble diversified single-crystal superstructures. Importantly, intermediate assembly states are captured, which helps illustrate the evolution of TBU-based superstructures and thus provides a profound understanding of the assembly process of superstructures at the atomic level.
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Affiliation(s)
- Bing Hu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wei-Yang Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350002, P. R. China
| | - Hai-Yan Sun
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yan-Qi Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ke-Zhao Du
- College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Normal University, 32 Shangsan Road, Fuzhou, Fujian, 350007, P. R. China
| | - Wen Ma
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
| | - Guo-Dong Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China
| | - Zhao-Feng Wu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiao-Ying Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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4
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Licht O, Barreiro-Lage D, Rousseau P, Giuliani A, Milosavljević AR, Isaak A, Mastai Y, Albeck A, Singh R, Nguyen VTT, Nahon L, Martínez-Fernández L, Díaz-Tendero S, Toker Y. Peptide Bond Formation in the Protonated Serine Dimer Following Vacuum UV Photon-Induced Excitation. Angew Chem Int Ed Engl 2023; 62:e202218770. [PMID: 36789791 DOI: 10.1002/anie.202218770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/14/2023] [Accepted: 02/14/2023] [Indexed: 02/16/2023]
Abstract
Possible routes for intra-cluster bond formation (ICBF) in protonated serine dimers have been studied. We found no evidence of ICBF following low energy collision-induced dissociation (in correspondence with previous works), however, we do observe clear evidence for ICBF following photon absorption in the 4.6-14 eV range. Moreover, the comparison of photon-induced dissociation measurements of the protonated serine dimer to those of a protonated serine dipeptide provides evidence that ICBF, in this case, involves peptide bond formation (PBF). The experimental results are supported by ab initio molecular dynamics and exploration of several excited state potential energy surfaces, unraveling a pathway for PBF following photon absorption. The combination of experiments and theory provides insight into the PBF mechanisms in clusters of amino acids, and reveals the importance of electronic excited states reached upon UV/VUV light excitation.
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Affiliation(s)
- Ori Licht
- Physics Department and Institute for Nanotehcnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Darío Barreiro-Lage
- Departamento de Química, Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Patrick Rousseau
- Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - Alexandre Giuliani
- Synchrotron SOLEIL L'Orme des Merisiers Départementale 128, 91190, Saint-Aubin, France.,INRAE, UAR1008, Transform Department, Rue de la Géraudière BP 71627, 44316, Nantes, France
| | | | - Avinoam Isaak
- Chemistry Department and Institute for Nanotehcnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Yitzhak Mastai
- Chemistry Department and Institute for Nanotehcnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Amnon Albeck
- Chemistry Department and Institute for Nanotehcnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
| | - Raj Singh
- Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - Vy T T Nguyen
- Normandie Univ, ENSICAEN, UNICAEN, CEA, CNRS, CIMAP, 14000, Caen, France
| | - Laurent Nahon
- Synchrotron SOLEIL L'Orme des Merisiers Départementale 128, 91190, Saint-Aubin, France
| | - Lara Martínez-Fernández
- Departamento de Química, Universidad Autónoma de Madrid, 28049, Madrid, Spain.,Institute for Advanced Research in Chemistry (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Sergio Díaz-Tendero
- Departamento de Química, Universidad Autónoma de Madrid, 28049, Madrid, Spain.,Institute for Advanced Research in Chemistry (IAdChem), Universidad Autónoma de Madrid, 28049, Madrid, Spain.,Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049, Madrid, Spain
| | - Yoni Toker
- Physics Department and Institute for Nanotehcnology and Advanced Materials, Bar-Ilan University, Ramat-Gan, 5290002, Israel
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5
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Dabringhaus P, Zedlitz S, Giarrana L, Scheschkewitz D, Krossing I. Low-Valent M x Al 3 Cluster Salts with Tetrahedral [SiAl 3 ] + and Trigonal-Bipyramidal [M 2 Al 3 ] 2+ Cores (M=Si/Ge). Angew Chem Int Ed Engl 2023; 62:e202215170. [PMID: 36479813 PMCID: PMC10108233 DOI: 10.1002/anie.202215170] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Schnöckel's [(AlCp*)4 ] and Jutzi's [SiCp*][B(C6 F5 )4 ] (Cp*=C5 Me5 ) are landmarks in modern main-group chemistry with diverse applications in synthesis and catalysis. Despite the isoelectronic relationship between the AlCp* and the [SiCp*]+ fragments, their mutual reactivity is hitherto unknown. Here, we report on their reaction giving the complex salts [Cp*Si(AlCp*)3 ][WCA] ([WCA]- =[Al(ORF )4 ]- and [F{Al(ORF )3 }2 ]- ; RF =C(CF3 )3 ). The tetrahedral [SiAl3 ]+ core not only represents a rare example of a low-valent silicon-doped aluminium-cluster, but also-due to its facile accessibility and high stability-provides a convenient preparative entry towards low-valent Si-Al clusters in general. For example, an elusive binuclear [Si2 (AlCp*)5 ]2+ with extremely short Al-Si bonds and a high negative partial charge at the Si atoms was structurally characterised and its bonding situation analysed by DFT. Crystals of the isostructural [Ge2 (AlCp*)5 ]2+ dication were also obtained and represent the first mixed Al-Ge cluster.
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Affiliation(s)
- Philipp Dabringhaus
- Albert-Ludwigs-Universität Freiburg, Institute for Inorganic and Analytical Chemistry, Freiburg Materials Research Center FMF, Albertstraße 21, 79104, Freiburg i. Br., Germany
| | - Silja Zedlitz
- Albert-Ludwigs-Universität Freiburg, Institute for Inorganic and Analytical Chemistry, Freiburg Materials Research Center FMF, Albertstraße 21, 79104, Freiburg i. Br., Germany
| | - Luisa Giarrana
- Chair in General and Inorganic Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - David Scheschkewitz
- Chair in General and Inorganic Chemistry, Saarland University, 66123, Saarbrücken, Germany
| | - Ingo Krossing
- Albert-Ludwigs-Universität Freiburg, Institute for Inorganic and Analytical Chemistry, Freiburg Materials Research Center FMF, Albertstraße 21, 79104, Freiburg i. Br., Germany
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6
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Peuronen A, Taponen AI, Kalenius E, Lehtonen A, Lahtinen M. Charge-Assisted Halogen Bonding in an Ionic Cavity of a Coordination Cage Based on a Copper(I) Iodide Cluster. Angew Chem Int Ed Engl 2023; 62:e202215689. [PMID: 36515462 PMCID: PMC10108208 DOI: 10.1002/anie.202215689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/06/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
The design of molecular containers capable of selectively binding specific guest molecules presents an interesting synthetic challenge in supramolecular chemistry. Here, we report the synthesis and structure of a coordination cage assembled from Cu3 I4 - clusters and tripodal cationic N-donor ligands. Owing to the localized permanent charges in the ligand core the cage binds iodide anions in specific regions within the cage through ionic interactions. This allows the selective binding of bromomethanes as secondary guest species within the cage promoted by halogen bonding, which was confirmed by single-crystal X-ray diffraction.
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Affiliation(s)
- Anssi Peuronen
- Department of Chemistry, University of Turku, 20014, Turku, Finland
| | - Anni I Taponen
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014, Jyvaskyla, Finland
| | - Elina Kalenius
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014, Jyvaskyla, Finland
| | - Ari Lehtonen
- Department of Chemistry, University of Turku, 20014, Turku, Finland
| | - Manu Lahtinen
- Department of Chemistry, University of Jyvaskyla, P.O. Box 35, 40014, Jyvaskyla, Finland
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7
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Xu H, Wu Y, Yang L, Rao Y, Wang J, Peng S, Li Q. Water-Harvesting Metal-Organic Frameworks with Gigantic Al 24 Units and their Deconstruction into Molecular Clusters. Angew Chem Int Ed Engl 2023; 62:e202217864. [PMID: 36479801 DOI: 10.1002/anie.202217864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/06/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
In contrast to the vast Al-oxo molecular cluster chemistry, Al-based building units for metal-organic framework (MOF) construction are limited in structural diversity and complexity. Synthesis of single crystalline MOFs based on this "hard" metal is further complicated by the poor reversibility of the Al-organic coordination linkages. Here, a strategy to employ two kinds of linkages with distinct strength-strong Al-carboxylate linkage and weak Cu-pyrazol N linkage-gives FDM-91 (FDM=Fudan Materials) with gigantic Al24 -based units. After replacing the weak moieties with organic linkers post-synthetically, two new stable MOFs with exceptional water harvesting capacity (up to 0.53 g g-1 ) and outstanding cycling performance are developed. Linkage-selective dissociation of FDM-91 further leads to the isolation of the Al24 molecular clusters. The versatile chemistry performed here to reinforce or deconstruct MOFs provides a new way to make important extended and discrete structures.
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Affiliation(s)
- Huoshu Xu
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Yichen Wu
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Lingyi Yang
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Yin Rao
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Junyi Wang
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Shuyin Peng
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
| | - Qiaowei Li
- Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, P.R. China
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8
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Kim Y, Sridharan A, Suess DLM. The Elusive Mononitrosylated [Fe 4 S 4 ] Cluster in Three Redox States. Angew Chem Int Ed Engl 2022; 61:e202213032. [PMID: 36194444 PMCID: PMC9669169 DOI: 10.1002/anie.202213032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Indexed: 11/06/2022]
Abstract
Iron-sulfur clusters are well-established targets in biological nitric oxide (NO) chemistry, but the key intermediate in these processes-a mononitrosylated [Fe4 S4 ] cluster-has not been fully characterized in a protein or a synthetic model thereof. Here, we report the synthesis of a three-member redox series of isostructural mononitrosylated [Fe4 S4 ] clusters. Mononitrosylation was achieved by binding NO to a 3 : 1 site-differentiated [Fe4 S4 ]+ cluster; subsequent oxidation and reduction afforded the other members of the series. All three clusters feature a local high-spin Fe3+ center antiferromagnetically coupled to 3 [NO]- . The observation of an anionic NO ligand suggests that NO binding is accompanied by formal electron transfer from the cluster to NO. Preliminary reactivity studies with the monocationic cluster demonstrate that exposure to excess NO degrades the cluster, supporting the intermediacy of mononitrosylated intermediates in NO sensing/signaling.
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Affiliation(s)
- Youngsuk Kim
- Department of ChemistryMassachusetts Institute of Technology77 Massachusetts AveCambridgeMA 02139USA
- Department of ChemistryPusan National UniversityBusan46241Republic of Korea
| | - Arun Sridharan
- Department of ChemistryMassachusetts Institute of Technology77 Massachusetts AveCambridgeMA 02139USA
| | - Daniel L. M. Suess
- Department of ChemistryMassachusetts Institute of Technology77 Massachusetts AveCambridgeMA 02139USA
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9
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Coburger P, Masero F, Bösken J, Mougel V, Grützmacher H. A Germapyramidane Switches Between 3D Cluster and 2D Cyclic Structures in Single-Electron Steps. Angew Chem Int Ed Engl 2022; 61:e202211749. [PMID: 36152009 PMCID: PMC9828763 DOI: 10.1002/anie.202211749] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Indexed: 01/12/2023]
Abstract
Reaction of the imidazolium-substituted iphosphate-diide, (Ipr)2 C2 P2 (IDP), with GeCl2 ⋅ dioxane and KBArF24 [(BarF24 )- =tetrakis[(3,5-trifluoromethyl)phenyl]borate)] afforded the dicationic spherical-aromatic nido-cluster [Ge(η4 -IDP)]2+ ([1]2+ ) (Ipr=1,3-bis(2,6-diisopropylphenyl)imidazolium-2-ylidene). This complex is a rare heavy analogue of the elusive pyramidane [C(η4 -C4 H4 )]. [1]2+ undergoes two reversible one-electron reductions, which yield the radical cation [2]⋅+ and the neutral GeII species 3. Both [2]⋅+ and 3 rearrange in solution forming the 2D aromatic and planar imidazolium-substituted digermolide [4]2+ and germole-diide 5, respectively. Both planar species can be oxidized back to [1]2+ using AgSbF6 . These redox-isomerizations correspond to the fundamental transformation of a 3D aromatic cluster into a 2D aromatic ring compound upon reduction and vice versa. The mechanism of these reactions was elucidated using DFT calculations and cyclic voltammetry experiments.
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Affiliation(s)
- Peter Coburger
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Fabio Masero
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Jonas Bösken
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Victor Mougel
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 1–5/108093ZürichSwitzerland
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10
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Scharnhölz MT, Coburger P, Gravogl L, Klose D, Gamboa‐Carballo JJ, Le Corre G, Bösken J, Schweinzer C, Thöny D, Li Z, Meyer K, Grützmacher H. Bis(imidazolium)-1,3-diphosphete-diide: A Building Block for FeC 2 P 2 Complexes and Clusters. Angew Chem Int Ed Engl 2022; 61:e202205371. [PMID: 35661524 PMCID: PMC9796810 DOI: 10.1002/anie.202205371] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Indexed: 01/07/2023]
Abstract
Reaction of the 6π-electron aromatic four-membered heterocycle (IPr)2 C2 P2 (1) (IPr=1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene) with [Fe2 CO9 ] gives the neutral iron tricarbonyl complex [Fe(CO)3 -η3 -{(IPr)2 C2 P2 }] (2). Oxidation with two equivalents of the ferrocenium salt, [Fe(Cp)2 ](BArF24 ), affords the dicationic tricarbonyl complex [Fe(CO)3 -η4 -{(IPr)2 C2 P2 }](BArF24 )2 (4). The one-electron oxidation proceeds under concomitant loss of one CO ligand to give the paramagnetic dicarbonyl radical cation complex [Fe(CO)2 -η4 -{(IPr)2 C2 P2 }](BArF24 ) (5). Reduction of 5 allows the preparation of the neutral dicarbonyl complex [Fe(CO)2 -η4 -{(IPr)2 C2 P2 }] (6). An analysis by various spectroscopic techniques (57 Fe Mössbauer, EPR) combined with DFT calculations gives insight into differences of the electronic structure within the members of this unique series of iron carbonyl complexes, which can be either described as electron precise or Wade-Mingos clusters.
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Affiliation(s)
| | - Peter Coburger
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Lisa Gravogl
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstr. 191058ErlangenGermany
| | - Daniel Klose
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Juan José Gamboa‐Carballo
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland,Higher Institute of Technologies and Applied Sciences (InSTEC)University of HavanaAve. S. Allende 111010600HavanaCuba
| | - Grégoire Le Corre
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Jonas Bösken
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Clara Schweinzer
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Debora Thöny
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
| | - Zhongshu Li
- Lehn Institute of Functional Materials (LIFM)School of ChemistrySun Yat-Sen University510275GuangzhouChina,State Key Laboratory of Elemento-Organic ChemistryNankai University30071TianjinChina
| | - Karsten Meyer
- Department of Chemistry and PharmacyInorganic ChemistryFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)Egerlandstr. 191058ErlangenGermany
| | - Hansjörg Grützmacher
- Department of Chemistry and Applied BiosciencesETH ZürichVladimir-Prelog-Weg 18093ZürichSwitzerland
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11
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Hirai H, Takano S, Nakashima T, Iwasa T, Taketsugu T, Tsukuda T. Doping-Mediated Energy-Level Engineering of M@Au 12 Superatoms (M=Pd, Pt, Rh, Ir) for Efficient Photoluminescence and Photocatalysis. Angew Chem Int Ed Engl 2022; 61:e202207290. [PMID: 35608869 DOI: 10.1002/anie.202207290] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 12/18/2022]
Abstract
We synthesized a series of MAu12 (dppe)5 Cl2 (MAu12 ; M=Au, Pd, Pt, Rh, or Ir; dppe=1,2-bis(diphenylphosphino)ethane), which have icosahedral M@Au12 superatomic cores, and systematically investigated their electronic structures, photoluminescence (PL) and photocatalytic properties. The energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) was expanded when doping an M element positioned at the lower left of the periodic table. The PL quantum yield was enhanced with an increase in the HOMO-LUMO gap and reached 0.46-0.67 for MAu12 (M=Pt, Rh, or Ir) under deaerated conditions. The bright PLs from MAu12 (M=Pt, Rh, or Ir) were assigned to phosphorescence based on quenching by O2 . MAu12 (M=Pt, Rh, or Ir) acted as a more efficient and stable photocatalyst than Au13 for intramolecular [2+2] cycloaddition of bisenone via the oxidative quenching cycle. This study provides rational guides for designing photoluminescent and photocatalytic gold superatoms by the doping of heterometal elements.
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Affiliation(s)
- Haru Hirai
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinjiro Takano
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Takuya Nakashima
- Division of Materials Science, Nara Institute of Science and Technology (NAIST), Ikoma, Nara 630-0192, Japan
| | - Takeshi Iwasa
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Tetsuya Taketsugu
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.,Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
| | - Tatsuya Tsukuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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12
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Del Horno E, Jover J, Mena M, Pérez-Redondo A, Yélamos C. Dinitrogen Binding at a Trititanium Chloride Complex and Its Conversion to Ammonia under Ambient Conditions. Angew Chem Int Ed Engl 2022; 61:e202204544. [PMID: 35748604 PMCID: PMC9542190 DOI: 10.1002/anie.202204544] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Indexed: 12/18/2022]
Abstract
Reaction of [TiCp*Cl3] (Cp*=η5‐C5Me5) with one equivalent of magnesium in tetrahydrofuran at room temperature affords the paramagnetic trinuclear complex [{TiCp*(μ‐Cl)}3(μ3‐Cl)], which reacts with dinitrogen under ambient conditions to give the diamagnetic derivative [{TiCp*(μ‐Cl)}3(μ3‐η1 : η2 : η2‐N2)] and the titanium(III) dimer [{TiCp*Cl(μ‐Cl)}2]. The structure of the trinuclear mixed‐valence complexes has been studied by experimental and theoretical methods and the latter compound represents the first well‐defined example of the μ3‐η1 : η2 : η2 coordination mode of the dinitrogen molecule. The reaction of [{TiCp*(μ‐Cl)}3(μ3‐η1 : η2 : η2‐N2)] with excess HCl in tetrahydrofuran results in clean NH4Cl formation with regeneration of the starting material [TiCp*Cl3]. Therefore, a cyclic ammonia synthesis under ambient conditions can be envisioned by alternating N2/HCl atmospheres in a [TiCp*Cl3]/Mg(excess) reaction mixture in tetrahydrofuran.
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Affiliation(s)
- Estefanía Del Horno
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, 28805, Alcalá de Henares-Madrid, Spain
| | - Jesús Jover
- Secció de Química Inorgànica, Departament de Química Inorgànica i Orgànica, Institut de Química Teòrica i Computacional (IQTC-UB), Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain
| | - Miguel Mena
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, 28805, Alcalá de Henares-Madrid, Spain
| | - Adrián Pérez-Redondo
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, 28805, Alcalá de Henares-Madrid, Spain
| | - Carlos Yélamos
- Departamento de Química Orgánica y Química Inorgánica, Instituto de Investigación Química "Andrés M. del Río" (IQAR), Universidad de Alcalá, 28805, Alcalá de Henares-Madrid, Spain
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13
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Luan C, Shen Q, Rowell N, Zhang M, Chen X, Huang W, Yu K. A Real-Time In Situ Demonstration of Direct and Indirect Transformation Pathways in CdTe Magic-Size Clusters at Room Temperature. Angew Chem Int Ed Engl 2022; 61:e202205784. [PMID: 35794715 DOI: 10.1002/anie.202205784] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Indexed: 02/05/2023]
Abstract
The transformations of colloidal semiconductor magic-size clusters (MSCs) are expected to occur with only discrete, step-wise redshifts in optical absorption. Here, we challenge this assumption presenting a novel, conceptually different transformation, for which the redshift is continuous. In the room-temperature transformation from CdTe MSC-448 to MSC-488 (designated by the peak wavelengths in nanometer), the redshift of absorption monitored in situ displays distinctly continuous and/or step-wise behavior. Based on conclusive evidence provided by real-time experiments, the former transformation is apparently direct and intra-cluster with a relatively large energy barrier. The latter transformation is indirect and assisted by MSC precursor compounds (PCs). The former transformation follows the latter often, being predominant at a relatively high temperature. The present findings encourage a reconsideration of the absorption redshift reported previously for transformations of binary II-VI MSCs, together with the pathway associated without the increase of cluster mass.
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Affiliation(s)
- Chaoran Luan
- Laboratory of Ethnopharmacology, Tissue-orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Qiu Shen
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Nelson Rowell
- Metrology Research Centre, National Research Council Canada, Ontario, K1A 0R6, Canada
| | - Meng Zhang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Xiaoqin Chen
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Wen Huang
- Laboratory of Ethnopharmacology, Tissue-orientated Property of Chinese Medicine Key Laboratory of Sichuan Province, West China School of Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
| | - Kui Yu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan, 610065, P. R. China.,Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, Sichuan, 610065, P. R. China
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14
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Li JJ, Liu CY, Guan ZJ, Lei Z, Wang QM. Anion-Directed Regulation of Structures and Luminescence of Heterometallic Clusters. Angew Chem Int Ed Engl 2022; 61:e202201549. [PMID: 35393719 DOI: 10.1002/anie.202201549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Indexed: 11/09/2022]
Abstract
Anions have been used to regulate the structures and luminescence of heterometallic clusters. Introducing ClO4 - into orange-emissive, butterfly-like [(C)(Au-PPhpy2 )6 Ag4 ](BF4 )6 (1, PPhpy2 =bis(2-pyridyl)phenylphosphine) leads to the formation of red-emissive [(C)(Au-PPhpy2 )6 Ag5 (ClO4 )3 ](ClO4 )4 (2) with a novel trigonal bipyramidal structure; employing PhCO2 - gives yellow-emissive, hexagram-like [(C)(Au-PPhpy2 )6 Ag6 (PhCO2 )3 ](BF4 )5 (3). Notably, 1 exhibits weak luminescence in CH2 Cl2 /CH3 OH=1 : 1 (v : v) with a quantum yield (QY) of 0.05, whereas it was dramatically increased to 0.49 and 0.83 for 2 and 3, respectively. Theoretical calculation confirms that the involvement of anions in the electronic structures is responsible for the shifts of emission. The high QYs of 2 and 3 are attributed to the protection provided by ligands and anions. This work demonstrates that anions may serve as an extra designable factor beyond just counterions for functional metal clusters.
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Affiliation(s)
- Jiao-Jiao Li
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China
| | - Chun-Yu Liu
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China
| | - Zong-Jie Guan
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China
| | - Zhen Lei
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China
| | - Quan-Ming Wang
- Department of Chemistry, Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing, 100084, P. R. China
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