1
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Zhang J, Xu X, Yan X. Au-involving chalcogen bond in 4-(2-chalcophenyl)-1,2,3-triazolylidene Au(I) complexes: synthesis, characterization, and photophysical properties. Dalton Trans 2025. [PMID: 40433906 DOI: 10.1039/d4dt03508a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2025]
Abstract
Noncovalent interactions, particularly chalcogen bonds (ChBs), have gained prominence in modern chemistry due to their tunability and directionality. We present a pioneering investigation of a d10 metal-involving ChB in triazolylidene Au(I) complexes. The crystal structures reveal the occurrence of intramolecular ChBs between Au(I) and chalcophene substituents positioned on the wingtip of triazolylidene ligands. The strength of these ChB interactions can be effectively modulated by altering the chalcophene moieties and ancillary ligands associated with Au(I). The neutral LAu(I)X complexes exhibit remarkable phosphorescence, with photoluminescence quantum yield (PLQY) reaching up to 70% in the solid state, which is attributed to their rigid structure with intramolecular ChB interactions between the Au and chalcogen atoms. Moreover, density functional theory (DFT) calculations were performed to obtain insights into the nature of the ChB interactions.
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Affiliation(s)
- Jingli Zhang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, China.
| | - Xingyu Xu
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Xiaoyu Yan
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, School of Chemistry and Life Resources, Renmin University of China, Beijing, 100872, China.
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2
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Sorroche A, Monge M, López-de-Luzuriaga JM. Enhancing the Stability and Catalytic Performance of Gold Subnanoclusters Mediated by Au···H-C Hydrogen Bonding and Au···π Interactions. Inorg Chem 2025; 64:6301-6312. [PMID: 40116051 DOI: 10.1021/acs.inorgchem.5c00153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2025]
Abstract
Gold subnanoclusters (AuSNCs) exhibit remarkable catalytic activity; however, their short-lived transient existence and strong tendency for self-aggregation remain disadvantageous for practical application. Considering that weak secondary interactions, such as Au···H-C or Au···π, could enhance the stability of the subnanocluster system, we have assessed their influence on the stabilization through a combination of experimental and computational analyses. We have evaluated the stabilization ability of different functional groups toward the AuSNCs system. Matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) experiments, density functional theory (DFT) calculations, and topological tools (QTAIM and NCI) provide decisive insights into the mechanism of stabilization of the short-lived AuSNCs species. Additionally, we extended the stabilization analysis to an application in catalysis. By conducting a complete NCI analysis of an optimized energy pathway, we demonstrate how an Au3 subnanocluster can be stabilized by a series of weak secondary interactions, including hydrogen bonds to gold (Au···H-C) as well as Au···π interactions in intermediates and transition states.
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Affiliation(s)
- Alba Sorroche
- Departamento de Química, Instituto de Investigación en Química de la Universidad de La Rioja (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006 Logroño, Spain
| | - Miguel Monge
- Departamento de Química, Instituto de Investigación en Química de la Universidad de La Rioja (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006 Logroño, Spain
| | - José María López-de-Luzuriaga
- Departamento de Química, Instituto de Investigación en Química de la Universidad de La Rioja (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006 Logroño, Spain
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3
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Castro Castro P, Gabbaï FP. Pnictogen Bonding at the Core of a Carbene-Stiborane-Gold Complex: Impact on Structure and Reactivity. Organometallics 2024; 43:2334-2341. [PMID: 39421291 PMCID: PMC11481098 DOI: 10.1021/acs.organomet.4c00347] [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: 08/07/2024] [Revised: 09/06/2024] [Accepted: 09/11/2024] [Indexed: 10/19/2024]
Abstract
Our interest in the design of ambiphilic ligands and their coordination to gold has led us to synthesize an indazol-3-ylidene gold chloride complex functionalized at the 4-position of the indazole backbone by a stibine functionality. The antimony center of this new complex cleanly reacts with o-chloranil to afford the corresponding stiborane derivative. Structural analysis indicates that the stiborane coordination environment is best described as a distorted square pyramid whose open face is oriented toward the gold center, allowing for the formation of a long donor-acceptor, or pnictogen, Au → Sb bonding interaction. The presence of this interaction, which has been probed computationally, is also manifested in the enhanced catalytic activity of this complex in the cyclization of N-propargyl-4-fluorobenzamide.
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Affiliation(s)
- Paula Castro Castro
- Department of Chemistry, Texas A&M University, College
Station, Texas 77843-3255, United States
| | - François P. Gabbaï
- Department of Chemistry, Texas A&M University, College
Station, Texas 77843-3255, United States
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4
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Sorroche A, Reboiro F, Monge M, López-de-Luzuriaga JM. Recent Trends in Group 11 Hydrogen Bonding. Chempluschem 2024; 89:e202400273. [PMID: 38764413 DOI: 10.1002/cplu.202400273] [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: 04/16/2024] [Revised: 05/13/2024] [Accepted: 05/13/2024] [Indexed: 05/21/2024]
Abstract
Conventional hydrogen bonding (H-bonding) has been extensively studied in organic and biological systems. However, its role in transition metal chemistry, particularly with Group 11 metals (i. e. Cu, Ag, Au) as hydrogen bond acceptors, remains relatively unexplored. Through a combination of experimental techniques, such as Nuclear Magnetic Resonance (NMR), Infrared spectroscopy (IR), X-Ray Diffraction (XRD), and computational calculations, several aspects of H-bonding interactions with Group 11 metals are examined, shedding light on its impact on structural motifs and reactivity. These include bond strengths, geometries, and effects on electronic structures. Understanding the intricacies of hydrogen bonding within transition metal chemistry holds promise for various applications, including catalytic transformations, the construction of molecular assemblies, synthesis of complexes displaying anticancer activities, or luminescence applications (e. g. Thermally Activated Delayed Fluorescence, TADF). This review encompasses the most significant recent advances, challenges, and future prospects in this emerging field.
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Affiliation(s)
- Alba Sorroche
- Departamento de Química, Instituto de Investigación en Química (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - Félix Reboiro
- Departamento de Química, Instituto de Investigación en Química (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - Miguel Monge
- Departamento de Química, Instituto de Investigación en Química (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - José María López-de-Luzuriaga
- Departamento de Química, Instituto de Investigación en Química (IQUR), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
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5
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Amonov A, Scheiner S. Halogen Bonding to the π-Systems of Polycyclic Aromatics. Chemphyschem 2024; 25:e202400482. [PMID: 38923736 DOI: 10.1002/cphc.202400482] [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: 04/27/2024] [Revised: 06/06/2024] [Accepted: 06/26/2024] [Indexed: 06/28/2024]
Abstract
The propensity of the π-electron system lying above a polycyclic aromatic system to engage in a halogen bond is examined by DFT calculations. Prototype Lewis acid CF3I is placed above the planes of benzene, naphthalene, anthracene, phenanthrene, naphthacene, chrysene, triphenyl, pyrene, and coronene. The I atom positions itself some 3.3-3.4 Å above the polycyclic plane, and the associated interaction energy is about 4 kcal/mol. This quantity is a little smaller for benzene, but is roughly equal for the larger polycyclics. The energy only oscillates a little as the Lewis acid slides across the face of the polycyclic, preferring regions of higher π-electron density over minima of the electrostatic potential. The binding is dominated by dispersion which contributes half of the total interaction energy.
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Affiliation(s)
- Akhtam Amonov
- Department of Optics and Spectroscopy, Institute of Engineering Physics Samarkand State University, University blv. 15, 140104, Samarkand, Uzbekistan
| | - Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah, 84322-0300, USA
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6
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Scheiner S, Derewenda ZS. Differing Effects of Nonlinearity around the Proton Acceptor on CH··O and NH··O H-Bond Strength within Proteins. J Phys Chem B 2024; 128:7376-7384. [PMID: 39024061 DOI: 10.1021/acs.jpcb.4c03102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
The effects of deviations from nonlinearity around the carbonyl proton acceptor of an amide group are assessed by DFT quantum chemical calculations for both CH··O and NH··O H-bonds. The proton donors are the imidazole functional group of His and the indole of Trp, which are paired respectively with N-methylacetamide and acetamide. The displacement of either CH or NH group toward the carbonyl O sp2 lone pairs stabilizes the system and strengthens the H-bond. But the two donor groups differ in their response to a shift out of the amide plane. While the NH··O H-bond is weakened by this displacement, a substantial strengthening is observed when the CH donor is moved out of this plane, in one direction versus the other. This pattern is explained on the basis of simple Coulombic considerations.
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Affiliation(s)
- Steve Scheiner
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300, United States
| | - Zygmunt S Derewenda
- Department of Molecular Physiology and Biological Physics, University of Virginia, 1340 Jefferson Park Avenue, Charlottesville, Virginia 22908-0736, United States
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7
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Maltz L, Gabbaï FP. Exploring the Effects of Se Basicity on a Te···Se Interaction Supported by a Rigid Indazolium Backbone. Organometallics 2024; 43:1246-1255. [PMID: 38873571 PMCID: PMC11167644 DOI: 10.1021/acs.organomet.4c00094] [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: 03/07/2024] [Revised: 04/19/2024] [Accepted: 04/26/2024] [Indexed: 06/15/2024]
Abstract
With an interest in chalcogen bonding, we use a rigid indazolium backbone to install a formally zero-valent Se center next to a divalent Te center, allowing us to investigate the effects of oxidation of the Se center on the observed Te···Se interaction. Through spectroscopic and computational comparison of the Se(0) species with its Se(II) counterpart and their monochalcogen analogues, we experimentally and computationally investigate the effect of modulating Se basicity on the resulting Te···Se interaction. Comparison with well-studied naphthalene and acenaphthene variants indicates that the increased basicity of the Se(0) center allows for a comparably strong Te···Se interaction despite longer peri distances and a larger splay angle. Finally, our study illuminates the potential non-innocence of cationic organic substituents in chalcogen-bonding catalysis of the transfer hydrogenation of quinolines.
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Affiliation(s)
- Logan
T. Maltz
- 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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8
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Zhang J, Liu T, Zhang G, Cai J, Wang Y, Tong J, Ma Y, Szostak R, Szostak M. Indazolin-3-ylidenes (Indy*): easily accessible, sterically-hindered indazole-derived N-heterocyclic carbenes and their application in gold catalysis. Dalton Trans 2024; 53:4260-4265. [PMID: 38344761 DOI: 10.1039/d4dt00287c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Sterically-hindered N-heterocyclic carbenes (NHCs) with functionalized N-wingtips are a pivotal class of ligands in organic synthesis. Herein, we report the first class of sterically-hindered N-heterocyclic carbenes based on the indazole framework. These ligands combine the strong σ-donation of the carbene center due to the carbene placement at the C3-indazole position with the sterically-hindered and flexible N-substitution with the versatile 2,6-bis(diphenylmethyl)aryl moiety that extends beyond the metal centre for the first time in non-classical N-heterocyclic carbenes. The ligands are readily accessible by the rare Cadogan indazole synthesis of sterically-hindered N-aryl-1-(2-nitrophenyl)methanimines. Steric and electronic characterization as well as catalytic studies in the synthesis of oxazolines are described. Considering the unique properties of indazole-derived carbenes, we anticipate that this class of compounds will find broad application in organic synthesis and catalysis.
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Affiliation(s)
- Jin Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Ting Liu
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Gaopeng Zhang
- Kaili Catalyst & New Materials Co., Ltd, Xi'an 710299, China
| | - Jianglong Cai
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Yue Wang
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Jianbo Tong
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Yangmin Ma
- College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Roman Szostak
- Department of Chemistry, Wroclaw University, F. Joliot-Curie 14, Wroclaw 50-383, Poland
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, USA.
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9
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Sorroche A, Moreno S, Elena Olmos M, Monge M, López-de-Luzuriaga JM. Deciphering the Primary Role of Au⋅⋅⋅H-X Hydrogen Bonding in Gold Catalysis. Angew Chem Int Ed Engl 2023; 62:e202310314. [PMID: 37615519 DOI: 10.1002/anie.202310314] [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: 07/19/2023] [Revised: 08/23/2023] [Accepted: 08/24/2023] [Indexed: 08/25/2023]
Abstract
Au⋅⋅⋅H-X (X=N or C) hydrogen bonding is gaining increasing interest, both in the study of its intrinsic nature and in their operability in different fields. While the role of these interactions has been studied in the stabilization of gold(I) complexes, their role during the minimum free energy reaction pathway of a given catalytic process remains unexplored. We report herein that complex [Au(C≡CPh)(pip)] (pip=piperidine) catalyses the A3 -coupling reaction for the synthesis of propargylamines, thanks to the ability of Au(I) to promote weak hydrogen bonding interactions with the reactants along the free energy profile. Density Functional Theory (DFT) calculations show that these Au⋅⋅⋅H-X interactions play a directing role in the catalysed A3 -coupling. Topological non-covalent interactions (NCI), interaction region indicator (IRI) and quantum theory of atoms in molecules (QTAIM) analysis in real space of the electron density provide a description of these interactions accurately.
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Affiliation(s)
- Alba Sorroche
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - Sonia Moreno
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - M Elena Olmos
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - Miguel Monge
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
| | - José M López-de-Luzuriaga
- Departamento de Química, Centro de Investigación en Síntesis Química (CISQ), Universidad de La Rioja, Complejo Científico-Tecnológico, 26006, Logroño, Spain
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10
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Munawar A, Maltz LT, Liu WC, Gabbaï FP. Synthesis of an Indazole/Indazolium Phosphine Ligand Scaffold and Its Application in Gold(I) Catalysis. Organometallics 2023; 42:2742-2746. [PMID: 38357473 PMCID: PMC10863396 DOI: 10.1021/acs.organomet.3c00354] [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: 08/11/2023] [Indexed: 02/16/2024]
Abstract
Advances in ligand development have allowed for the fine-tuning of gold catalysis. To contribute to this field, we designed an indazole phosphine ligand scaffold that allows facile introduction of cationic charge through methylation. With minimal changes to the structure upon methylation, we could assess the importance of the electronic effects of the insertion of a positive charge on the catalytic activity of the resulting gold(I) complex. Using the benchmark reactions of propargyl amide cyclization and enyne cyclization with and without hexafluoroisopropanol (HFIP), we observed marked differences in the catalytic activities of the neutral and cationic gold species.
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Affiliation(s)
- Asima Munawar
- Department of Chemistry, Texas A&M University, College
Station, Texas 77843, United States
| | - Logan T. Maltz
- Department of Chemistry, Texas A&M University, College
Station, Texas 77843, United States
| | - Wei-Chun Liu
- 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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11
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Mikherdov AS, Jin M, Ito H. Exploring Au(i) involving halogen bonding with N-heterocyclic carbene Au(i) aryl complexes in crystalline media. Chem Sci 2023; 14:4485-4494. [PMID: 37152261 PMCID: PMC10155931 DOI: 10.1039/d3sc00373f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Accepted: 04/07/2023] [Indexed: 05/09/2023] Open
Abstract
Among the known types of non-covalent interactions with a Au(i) metal center, Au(i) involving halogen bonding (XB) remains a rare phenomenon that has not been studied systematically. Herein, using five N-heterocyclic carbene (NHC) Au(i) aryl complexes and two iodoperfluoroarenes as XB donors, we demonstrated that the XB involving the Au(i) metal center can be predictably obtained for neutral Au(i) complexes using the example of nine co-crystals. The presence of XB involving the Au(i) center was experimentally investigated by single-crystal X-ray diffraction and solid-state 13C CP-MAS NMR methods, and their nature was elucidated through DFT calculations, followed by electron density, electrostatic potential, and orbital analyses. The obtained results revealed a connection between the structure and HOMO localization of Au(i) complexes as XB acceptors, and the geometrical, electronic, and spectroscopic features of XB interactions, as well as the supramolecular structure of the co-crystals.
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Affiliation(s)
- Alexander S Mikherdov
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Mingoo Jin
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido 060-8628 Japan
| | - Hajime Ito
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University Sapporo Hokkaido 060-8628 Japan
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University Sapporo Hokkaido 060-8628 Japan
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12
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Li Y, Sun Y, Zhao C, Zeng Y. Activation of metal-involved halogen bonds and classical halogen bonds in gold(I) catalysis. Dalton Trans 2023; 52:4517-4525. [PMID: 36920245 DOI: 10.1039/d3dt00158j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
In gold(I) catalysis, the activation of Au(I) chloride catalysts via chloride abstraction and noncovalent interactions has become a research focus in organometallic catalysis. In this work, taking halogen bond donors (C4H2INO2, C6F5I, C8H9O2I) as activators for a Au(I) chloride catalyst (Ph3PAuCl), the mechanism of the cyclization reaction of propargylic amide was investigated. It was found that there are two activation modes as design principles to obtain the catalytically active species Ph3PAu+: the halogen bond donors activate the Cl atoms of Ph3PAuCl to form X-I⋯Cl (X = C, N) classical halogen bonds and activate the Au atoms of Ph3PAuCl to form X-I⋯Au (X = C, N) metal-involved halogen bonds. For the two activation modes, the mechanism of the cyclization reaction of propargylic amide has pathways: the chloride abstraction process of the first step and the 5-exo/6-endo cyclization process of the second step. Both activation modes show good activity for the cyclization reaction with the activation ability of classical halogen bonds being slightly stronger than that of the metal-involved halogen bonds, which is consistent with the strength of the X-I⋯Cl halogen bonds being slightly stronger than that of the X-I⋯Au halogen bonds. Therefore, both metal-involved halogen bonds and classical halogen bonds have important development prospects for the activation of catalysts in gold(I) catalysis.
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Affiliation(s)
- Ying Li
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Yuanyuan Sun
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Chang Zhao
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Yanli Zeng
- College of Chemistry and Materials Science, Hebei Key Laboratory of Inorganic Nano-materials, Hebei Normal University, Shijiazhuang, 050024, China.
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13
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Hu X, Sun Y, Zhou X, Zhang B, Guan H, Xia F, Gui S, Kong X, Li F, Ling D. Insight into Drug Loading Regulated Micellar Rigidity by Nuclear Magnetic Resonance. ACS NANO 2022; 16:21407-21416. [PMID: 36375116 DOI: 10.1021/acsnano.2c09785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
The rigidity of polymeric micelles plays an important role in their biological behaviors. However, how drug loading affects the rigidity of polymeric micelles remains elusive. Herein, the indomethacin (IMC)-loaded Pluronic F127 micelle is used as a model system to illustrate the impact of drug loading on the rigidity and biological behaviors of polymeric micelles. Against expectations, micelles with moderate drug loading show higher cellular uptake and more severe cytotoxicity as compared to both high and low drug loading counterparts. Extensive one- and two-dimensional nuclear magnetic resonance (NMR) measurements are employed to reveal that the higher drug loading induces stronger interaction between IMC and hydrophilic block to boost the micellar rigidity; consequently, the moderate drug loading imparts micelles with appropriate rigidity for satisfactory cellular uptake and cytotoxicity. In summary, NMR spectroscopy is an important tool to gain insight into drug loading regulated micellar rigidity, which is helpful to understand their biological behaviors.
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Affiliation(s)
- Xi Hu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei230012, China
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai200240, China
- Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou310058, China
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou310003, China
| | - Yu Sun
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei230012, China
| | - Xiaoqi Zhou
- Department of Chemistry, Zhejiang University, Hangzhou310027, China
| | - Bo Zhang
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai200240, China
- WLA Laboratories, Shanghai201203, China
| | - Hanxi Guan
- Department of Chemistry, Zhejiang University, Hangzhou310027, China
| | - Fan Xia
- Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou310058, China
| | - Shuangying Gui
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei230012, China
| | - Xueqian Kong
- Department of Chemistry, Zhejiang University, Hangzhou310027, China
| | - Fangyuan Li
- Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou310058, China
- WLA Laboratories, Shanghai201203, China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou310009, China
| | - Daishun Ling
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, National Center for Translational Medicine, Shanghai Jiao Tong University, Shanghai200240, China
- Institute of Innovative Medicine, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou310058, China
- WLA Laboratories, Shanghai201203, China
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14
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Zheng C, Tang Y, Yu B. Tri( N-carbazolyl)phosphine Gold(I) Complexes: Structural and Catalytic Activity Studies. Inorg Chem 2022; 61:16874-16886. [PMID: 36219576 DOI: 10.1021/acs.inorgchem.2c02902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Twelve tri(N-carbazolyl)phosphine gold(I) complexes, bearing both protonated and deuterated aryl phosphorous triamide-type ligands, have been synthesized and characterized. An elusive Au-H(D) interaction between the H(D) atoms of the tri(N-carbazolyl)phosphine ligand at the H-1(D-1) position of the carbazolyl ring and the central gold atom was observed. Complexes 5(H)/5(D) bearing the dibrominated tri(N-carbazolyl)phosphine ligand exhibit isotopic polymorphism, in which two dramatically different crystal-packing modes between the protonated and deuterated forms occur. The catalytic potential of these complexes has been showcased in the gold(I)-catalyzed glycosylation with glycosyl o-alkynylbenzoates as donors, with TON being up to 27 000.
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Affiliation(s)
- Chang Zheng
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China
| | - Yu Tang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
| | - Biao Yu
- School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.,State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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15
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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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16
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Feng X, Yang J, Miao J, Zhong C, Yin X, Li N, Wu C, Zhang Q, Chen Y, Li K, Yang C. Au⋅⋅⋅H−C Interactions Support a Robust Thermally Activated Delayed Fluorescence (TADF) Gold(I) Complex for OLEDs with Little Efficiency Roll‐Off and Good Stability. Angew Chem Int Ed Engl 2022; 61:e202209451. [DOI: 10.1002/anie.202209451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Xingyu Feng
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Jian‐Gong Yang
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
- College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen 518060 P. R. China
| | - Jingsheng Miao
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Cheng Zhong
- Department of Chemistry Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University Wuhan 430072 P. R. China
| | - Xiaojun Yin
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Nengquan Li
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Chao Wu
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Qizheng Zhang
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Kai Li
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
| | - Chuluo Yang
- Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and Engineering Shenzhen University Shenzhen 518055 P. R. China
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17
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Feng X, Yang JG, Miao J, Zhong C, Yin X, Li N, Wu C, Zhang Q, Chen Y, Li K, Yang C. Au···H–C Interactions‐supported Robust TADF Gold(I) Complex for OLEDs with Extremely Small Efficiency Roll‐off and Good Stability. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xingyu Feng
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Jian-Gong Yang
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Jingsheng Miao
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Cheng Zhong
- Wuhan University Department of Chemistry CHINA
| | - Xiaojun Yin
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Nengquan Li
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Chao Wu
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Qizheng Zhang
- Shenzhen University College of Materials Science and Engineering CHINA
| | - Yong Chen
- Technical Institute of Physics and Chemistry CAS: Technical Institute of Physics and Chemistry Key Laboratory of Photochemical Conversion and Optoelectronic Materials Beijing CHINA
| | - Kai Li
- Shenzhen University College of Materials Science and Engineering Xueyuan Blvd. 1066 518055 CHINA
| | - Chuluo Yang
- Shenzhen University College of Materials Science and Engineering Xueyuan Avenue 518000 Shenzhen CHINA
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18
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Park G, Karimi M, Liu W, Gabbaï FP. Green‐Light‐Driven Reductive Elimination of Chlorine from a Carbene‐Xanthylium Gold(III) Complex. Angew Chem Int Ed Engl 2022; 61:e202206265. [DOI: 10.1002/anie.202206265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Gyeongjin Park
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | | | - Wei‐Chun Liu
- Department of Chemistry Texas A&M University College Station TX 77843 USA
| | - François P. Gabbaï
- Department of Chemistry Texas A&M University College Station TX 77843 USA
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19
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Triptow J, Meijer G, Fielicke A, Dopfer O, Green M. Comparison of Conventional and Nonconventional Hydrogen Bond Donors in Au - Complexes. J Phys Chem A 2022; 126:3880-3892. [PMID: 35687835 PMCID: PMC9234979 DOI: 10.1021/acs.jpca.2c02725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although gold has become a well-known nonconventional hydrogen bond acceptor, interactions with nonconventional hydrogen bond donors have been largely overlooked. In order to provide a better understanding of these interactions, two conventional hydrogen bonding molecules (3-hydroxytetrahydrofuran and alaninol) and two nonconventional hydrogen bonding molecules (fenchone and menthone) were selected to form gas-phase complexes with Au-. The Au-[M] complexes were investigated using anion photoelectron spectroscopy and density functional theory. Au-[fenchone], Au-[menthone], Au-[3-hydroxyTHF], and Au-[alaninol] were found to have vertical detachment energies of 2.71 ± 0.05, 2.76 ± 0.05, 3.01 ± 0.03, and 3.02 ± 0.03 eV, respectively, which agree well with theory. The photoelectron spectra of the complexes resemble the spectrum of Au- but are blueshifted due to the electron transfer from Au- to M. With density functional theory, natural bond orbital analysis, and atoms-in-molecules analysis, we were able to extend our comparison of conventional and nonconventional hydrogen bonding to include geometric and electronic similarities. In Au-[3-hydroxyTHF] and Au-[alaninol], the hydrogen bonding comprised of Au-···HO as a strong, primary hydrogen bond, with secondary stabilization by weaker Au-···HN or Au-···HC hydrogen bonds. Interestingly, the Au-···HC bonds in Au-[fenchone] and Au-[menthone] can be characterized as hydrogen bonds, despite their classification as nonconventional hydrogen bond donors.
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Affiliation(s)
- Jenny Triptow
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Gerard Meijer
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
| | - André Fielicke
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.,Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Otto Dopfer
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany
| | - Mallory Green
- Fritz-Haber-Institut der Max-Planck Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany
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20
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Park G, Karimi M, Liu WC, Gabbai FP. Green‐Light‐Driven Reductive Elimination of Chlorine from a Carbene‐Xanthylium Gold(III) Complex. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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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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22
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Narayana MA, Vaddamanu M, Sathyanarayana A, Siddhant K, Sugiyama S, Ozaki K, Rengan AK, Velappan K, Hisano K, Tsutsumi O, Prabusankar G. A gold(I) 1,2,3-triazolylidene complex featuring the interaction between gold and methine hydrogen. Dalton Trans 2021; 50:16514-16518. [PMID: 34761758 DOI: 10.1039/d1dt02827h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A mesoionic N-heterocyclic carbene-gold(I) complex with a unique Au⋯H-C(methine) intramolecular hydrogen bonding interaction has been investigated in the solid state. The structure of this new neutral gold(I)-carbene was characterized by FT-IR and NMR spectroscopy, TGA, and X-ray diffraction techniques. Density functional theory (DFT) and atoms-in-molecule (AIM) analysis revealed that the gold-hydrogen bonding situation is more favored. Besides, the photophysical properties of the gold(I) complex were also investigated.
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Affiliation(s)
- Mannem Adi Narayana
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
| | - Moulali Vaddamanu
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
| | | | - Kumar Siddhant
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Shohei Sugiyama
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Kazuhisa Ozaki
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Aravind Kumar Rengan
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, India-502 284
| | - Kavitha Velappan
- DAV-IITH, Indian Institute of Technology Hyderabad, India-502 284
| | - Kyohei Hisano
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Osamu Tsutsumi
- Department of Applied Chemistry, Ritsumeikan University, Kusatsu 525-8577, Japan.
| | - Ganesan Prabusankar
- Department of Chemistry, Indian Institute of Technology Hyderabad, India-502 284.
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23
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Ivanov DM, Bokach NA, Yu Kukushkin V, Frontera A. Metal Centers as Nucleophiles: Oxymoron of Halogen Bond-Involving Crystal Engineering. Chemistry 2021; 28:e202103173. [PMID: 34623005 PMCID: PMC9298210 DOI: 10.1002/chem.202103173] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Indexed: 02/06/2023]
Abstract
This review highlights recent studies discovering unconventional halogen bonding (HaB) that involves positively charged metal centers. These centers provide their filled d‐orbitals for HaB, and thus behave as nucleophilic components toward the noncovalent interaction. This role of some electron‐rich transition metal centers can be considered an oxymoron in the sense that the metal is, in most cases, formally cationic; consequently, its electron donor function is unexpected. The importance of Ha⋅⋅⋅d‐[M] (Ha=halogen; M is Group 9 (Rh, Ir), 10 (Ni, Pd, Pt), or 11 (Cu, Au)) interactions in crystal engineering is emphasized by showing remarkable examples (reported and uncovered by our processing of the Cambridge Structural Database), where this Ha⋅⋅⋅d‐[M] directional interaction guides the formation of solid supramolecular assemblies of different dimensionalities.
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Affiliation(s)
- Daniil M Ivanov
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg, 199034, Russian Federation
| | - Nadezhda A Bokach
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg, 199034, Russian Federation
| | - Vadim Yu Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Universitetskaya Nab. 7/9, Saint Petersburg, 199034, Russian Federation.,Institute of Chemistry and Pharmaceutical Technologies, Altai State University, Barnaul, 656049, Russian Federation
| | - Antonio Frontera
- Department of Chemistry, Universitat de les Illes Balears, Palma de Mallorca (Baleares), 07122, Spain
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