1
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Raju S, Singh HB, Kumar S, Butcher RJ. Coordination Behavior of the Tellurium Incorporated Mercuraazametallamacrocycle and Investigation of d 10 ⋅⋅⋅d 10 Interactions between Closed Shell (Ag + Hg 2+ ) Metal Ions. Chemistry 2023; 29:e202301322. [PMID: 37317647 DOI: 10.1002/chem.202301322] [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: 04/27/2023] [Revised: 06/06/2023] [Accepted: 06/14/2023] [Indexed: 06/16/2023]
Abstract
Herein, a new tellurium and mercury containing mercuraazametallamacrocycle has been prepared via (2+2) condensation of bis(o-aminophenyl)telluride and bis(o-formylphenyl)mercury(II). The isolated bright yellow solid of mercuraazametallamacrocycle has adopted unsymmetrical figure-of-eight conformation in the crystal structure. To study the metallophilic interactions between closed shell metal ions, the macrocyclic ligand has been treated with two equiv. of AgOTf (OTf=trifluoromethansulfonate) and AgBF4 , which afforded greenish-yellow bimetallic silver complexes. The isolated silver complexes displayed intramolecular Hg⋅⋅⋅Ag, Te⋅⋅⋅Ag interactions as well as intermolecular Hg⋅⋅⋅Hg interactions and formed an extended 1D molecular chain by directing six atoms to interact as TeII ⋅⋅⋅AgI ⋅⋅⋅HgII ⋅⋅⋅HgII ⋅⋅⋅AgI ⋅⋅⋅TeII in a non linear fashion. The Hg⋅⋅⋅Ag, Te⋅⋅⋅Ag interactions have also been studied in solution by 199 Hg, 125 Te NMR spectroscopy, absorption, and emission spectroscopy. In DFT calculations, the Atom in Molecule (AIM) analysis, non-covalent interactions (NCI), natural bonding orbital (NBO) analysis strongly supported for experimental evidences and revealed that the intermolecular Hg⋅⋅⋅Hg interaction is stronger than the intramolecular Hg⋅⋅⋅Ag interactions.
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Affiliation(s)
- Saravanan Raju
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Harkesh B Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, Maharashtra, India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal Bhauri By-pass Road, Bhopal, 462 066, Madhya Pradesh, India
| | - Ray J Butcher
- Department of Chemistry, Howard University, Washington, D.C., 20059, USA
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2
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Quintana M, Rodriguez-Rius A, Vellé A, Vives S, Sanz Miguel PJ, Triola G. Dinuclear silver and gold bisNHC complexes as drug candidates for cancer therapy. Bioorg Med Chem 2022; 67:116814. [PMID: 35598528 DOI: 10.1016/j.bmc.2022.116814] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 05/06/2022] [Accepted: 05/06/2022] [Indexed: 11/02/2022]
Abstract
We report four dinuclear silver(I) and gold(I) complexes containing two different bidentate N-heterocyclic carbene ligands (bisNHC). One of these complexes 4, shows strong and selective anticancer activity against the human ovarian cancer cell line A2780. Mechanistically, 4 enhances the oxidative stress by stimulating reactive oxygen species production and inhibiting the scavenging activity of thioredoxin reductase. Our findings provide evidence that tuning ligand and electronic properties of metal-NHC complexes can modulate their reactivity and selectivity and it may result in potential novel anticancer drugs.
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Affiliation(s)
- Mireia Quintana
- Departamento de Química Biológica, Instituto de Química Avanzada de Cataluña (IQAC), CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Alba Rodriguez-Rius
- Departamento de Química Biológica, Instituto de Química Avanzada de Cataluña (IQAC), CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Alba Vellé
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Sonia Vives
- Departamento de Química Biológica, Instituto de Química Avanzada de Cataluña (IQAC), CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Pablo J Sanz Miguel
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain.
| | - Gemma Triola
- Departamento de Química Biológica, Instituto de Química Avanzada de Cataluña (IQAC), CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain.
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3
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Heidecker AA, Bohn M, Pöthig A. Crystal structure of a hexacationic Ag(I)-pillarplex-dodecyl-diammonium pseudo-rotaxane as terephthalate salt. Z KRIST-CRYST MATER 2022. [DOI: 10.1515/zkri-2021-2076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A new pseudo-rotaxane, consisting of a tubular, organometallic Ag-pillarplex ring and dodecyldiammonium axle component, is introduced and investigated towards potential non-covalent interactions by Full Interaction Maps (FIMs). FIMs predict regions of probable supramolecular interactions solely at the organic ligands, namely the rim and the aromatic rings of the pillarplex. The results were compared to structural parameters experimentally obtained by single-crystal X-ray diffraction. The pseudo-rotaxane was crystallized as a hydrated terephthalate salt, and the molecular and the crystal structure are discussed. The experimentally observed interactions are quantified using Hirshfeld surface analysis. In contrast to the FIMs prediction, four different interaction modes can be experimentally observed in the solid-state: encapsulation of a guest molecule, hydrogen bonding, π- and metal interactions.
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Affiliation(s)
- Alexandra A. Heidecker
- Department of Chemistry & Catalysis Research Center , Technische Universität München , Ernst-Otto-Fischer-Straße 1, D-85748 Garching , Germany
| | - Moritz Bohn
- Department of Chemistry & Catalysis Research Center , Technische Universität München , Ernst-Otto-Fischer-Straße 1, D-85748 Garching , Germany
| | - Alexander Pöthig
- Department of Chemistry & Catalysis Research Center , Technische Universität München , Ernst-Otto-Fischer-Straße 1, D-85748 Garching , Germany
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4
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Jakob CHG, Dominelli B, Rieb J, Jandl C, Pöthig A, Reich RM, Correia JDG, Kühn FE. Dinuclear Gold(I) Complexes Bearing N,N'-Allyl-Bridged Bisimidazolylidene Ligands. Chem Asian J 2020; 15:1848-1851. [PMID: 32348033 PMCID: PMC7687270 DOI: 10.1002/asia.202000453] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 04/28/2020] [Indexed: 11/30/2022]
Abstract
A novel N,N'-allyl-bridged bisimidazolium salt and a novel dinuclear Ag(I) and a Au(I) NHC complex are reported. Both metallacyclic complexes have a twisted structural shape due to the rigid allylic system and form two different isomers relating to the position of the double bonds. The allyl-group shows photoisomerisation, but no reactivity towards bases for the additional coordination of Pd(II).
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Affiliation(s)
- Christian H. G. Jakob
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Bruno Dominelli
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Julia Rieb
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Christian Jandl
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Alexander Pöthig
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - Robert M. Reich
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
| | - João D. G. Correia
- Centro de Ciências e Tecnologias Nucleares and Departamento de Engenharia e Ciências NuclearesInstituto Superior TécnicoUniversidade de LisboaCampus Tecnológico e NuclearEstrada Nacional N° 10 (km 139,7)2695-066Bobadela LRSPortugal
| | - Fritz E. Kühn
- Catalysis Research CenterMolecular CatalysisTechnische Universität MünchenErnst-Otto-Fischer-Straße 1D-85748Garching bei MünchenGermany
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5
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Vellé A, Rodríguez-Santiago L, Sodupe M, Sanz Miguel PJ. Enhanced Metallophilicity in Metal-Carbene Systems: Stronger Character of Aurophilic Interactions in Solution. Chemistry 2020; 26:997-1002. [PMID: 31729079 DOI: 10.1002/chem.201904507] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 12/28/2022]
Abstract
Metallophilicity is an essential concept that builds upon the attraction between closed shell metal ions. We report on the [M2 (bisNHC)2 ]2+ (M=AuI , AgI ; NHC=N-heterocyclic carbene) systems, which display almost identical features in the solid state. However, in solution the Au2 cation exhibits a significantly higher degree of rigidity owed to the stronger character of the aurophilic interactions. Both Au2 and Ag2 cationic constructs are able to accommodate Ag+ ions via M-M interactions, despite their inherent Coulombic repulsion. When electrostatic repulsion between host and guest is partially diminished, M-M distances are substantially shortened. Quantum chemical calculations estimate intermetallic bond orders up to 0.2. Although at the limit of (or beyond) the van der Waals radii, metallophilic interactions are responsible for their behavior in solution.
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Affiliation(s)
- Alba Vellé
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009, Zaragoza, Spain
| | - Luis Rodríguez-Santiago
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Mariona Sodupe
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Barcelona, Spain
| | - Pablo J Sanz Miguel
- Departamento de Química Inorgánica, Instituto de Síntesis QuímicayCatálisis Homogénea (ISQCH), Universidad de Zaragoza-CSIC, 50009, Zaragoza, Spain
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6
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Hao P, Xu Y, Li X, Shen J, Fu Y. Photochromism and photocatalysis of organic–inorganic hybrid iodoargentates modulated by argentophilic interactions. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00744g] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A series of organic–inorganic hybrid iodoargentates exhibit photochromic and photocatalytic properties, which could be effectively modulated by argentophilic interactions.
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Affiliation(s)
- Pengfei Hao
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education
- The School of Chemical and Material Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Yi Xu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education
- The School of Chemical and Material Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Xia Li
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education
- The School of Chemical and Material Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Junju Shen
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education
- The School of Chemical and Material Science
- Shanxi Normal University
- Linfen 041004
- China
| | - Yunlong Fu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education
- The School of Chemical and Material Science
- Shanxi Normal University
- Linfen 041004
- China
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7
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Singh AK, Usman M, Sciortino G, Garribba E, Rath SP. Through‐Space Spin Coupling in a Silver(II) Porphyrin Dimer upon Stepwise Oxidations: Ag
II
⋅⋅⋅Ag
II
, Ag
II
⋅⋅⋅Ag
III
, and Ag
III
⋅⋅⋅Ag
III
Metallophilic Interactions. Chemistry 2019; 25:10098-10110. [DOI: 10.1002/chem.201901731] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 05/17/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Akhil Kumar Singh
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Mohammad Usman
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
| | - Giuseppe Sciortino
- Dipartimento di Chimica e FarmaciaUniversità di Sassari Via Vienna 2 07100 Sassari Italy
- Departament de QuímicaUniversitat Autònoma de Barcelona 08193 Cerdanyola del Vallés Barcelona Spain
| | - Eugenio Garribba
- Dipartimento di Chimica e FarmaciaUniversità di Sassari Via Vienna 2 07100 Sassari Italy
| | - Sankar Prasad Rath
- Department of ChemistryIndian Institute of Technology Kanpur Kanpur 208016 India
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8
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Xu X, Zhang Z, Huang S, Cao L, Liu W, Yan X. 4-Halo-1,2,3-triazolylidenes: stable carbenes featuring halogen bonding. Dalton Trans 2019; 48:6931-6941. [PMID: 31038514 DOI: 10.1039/c9dt01018a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Synthesis and coordination of 4-halo-1,2,3-triazolylidenes have been developed. These novel ligands featured the character with σ-donation at carbon and a σ-hole at the halogen. Halogen bonding was observed by single crystal X-ray diffraction in their coinage metal complexes. The electronic properties of 4-iodo-1,2,3-triazolylidene were studied by both Ir-CO frequencies of the Tolman electronic parameter (TEP) and Huynh's electronic parameter (HEP) method, which suggested similar electronic properties to those of imidazolylidenes. During HEP tests, an interesting tunability was observed when different electron donors were employed.
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Affiliation(s)
- Xingyu Xu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China.
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9
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Au(I) and Ag(I) formamidinate tetranuclear complexes and coordination polymers: Synthesis, structures and luminescent properties. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.07.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Mandal S, Hebenbrock M, Müller J. A dinuclear silver(I)-mediated base pair in DNA formed from 1, N 6 -ethenoadenine and thymine. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.05.072] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Rieb J, Dominelli B, Mayer D, Jandl C, Drechsel J, Heydenreuter W, Sieber SA, Kühn FE. Influence of wing-tip substituents and reaction conditions on the structure, properties and cytotoxicity of Ag(i)- and Au(i)-bis(NHC) complexes. Dalton Trans 2018; 46:2722-2735. [PMID: 28174778 DOI: 10.1039/c6dt04559f] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The formation of different conformers of dinuclear silver(i) and gold(i) 1,1'-(2-hydroxyethane-1,1-diyl) bridge-functionalized bis(NHC) complexes with various wing-tip substituents (R = methyl, isopropyl and mesityl) has been investigated using multinuclear NMR spectroscopy and SC-XRD as well as DFT calculations. The ratio of anti/syn isomers strongly depends both on wing-tip substituents and the metal. Moreover, the reaction temperature plays a significant role during the transmetallation process for the ratio of gold(i) conformers, which is further affected by purification procedures. All obtained Au(i)-bis(NHC) complexes have been applied in a standard MTT assay performed for screening the antiproliferative activity against human lung and liver cancer cells. Strong evidence for a significant influence of both wing-tip substituents and conformation on the cytotoxic properties of the applied complexes has been found.
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Affiliation(s)
- Julia Rieb
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - Bruno Dominelli
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - David Mayer
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
| | - Christian Jandl
- Catalysis Research Center, Technische Universität München, Ernst-Otto-Fischer Straße 1, D-85747 Garching bei München, Germany
| | - Jonas Drechsel
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Wolfgang Heydenreuter
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Stephan A Sieber
- Chair of Organic Chemistry II, Department of Chemistry, Technische Universität München, Lichtenbergstraße 4, D-85747 Garching bei München, Germany
| | - Fritz E Kühn
- Department of Chemistry and Catalysis Research Center, Molecular Catalysis, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching bei München, Germany.
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12
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Horiuchi S, Moon S, Sakuda E, Ito A, Arikawa Y, Umakoshi K. U- to Z-shape isomerization in a Pt2Ag2 framework containing pyridyl-NHC ligands. Dalton Trans 2018; 47:7113-7117. [DOI: 10.1039/c8dt01047a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly twisted U-shaped Pt2Ag2 complex bearing pyridyl–NHC ligands showed isomerization to Z-shaped conformations via an intermolecular process. 1H NMR experiments revealed that the isomerization reached U : Z = 2 : 1 ratio in a thermodynamic equilibrium state.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Sangjoon Moon
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Akitaka Ito
- Graduate School of Engineering/School of Environmental Science and Engineering
- Kochi University of Technology
- Kami
- Japan
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science
- Graduate School of Engineering
- Nagasaki University
- Nagasaki 852-8521
- Japan
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13
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Singh AK, Khan FST, Rath SP. Silver(III)⋅⋅⋅Silver(III) Interactions that Stabilize the syn
Form in a Porphyrin Dimer Upon Oxidation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201705108] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Akhil Kumar Singh
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
| | | | - Sankar Prasad Rath
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
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14
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Singh AK, Khan FST, Rath SP. Silver(III)⋅⋅⋅Silver(III) Interactions that Stabilize the syn
Form in a Porphyrin Dimer Upon Oxidation. Angew Chem Int Ed Engl 2017; 56:8849-8854. [DOI: 10.1002/anie.201705108] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Akhil Kumar Singh
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
| | | | - Sankar Prasad Rath
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur- 208016 India
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15
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Vellé A, Maguire R, Kavanagh K, Sanz Miguel PJ, Montagner D. Steroid-AuI
-NHC Complexes: Synthesis and Antibacterial Activity. ChemMedChem 2017; 12:841-844. [DOI: 10.1002/cmdc.201700257] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Alba Vellé
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea, ISQCH; Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
- Chemistry Department; Maynooth University; Maynooth Ireland
- Biology Department; Maynooth University; Maynooth Ireland
| | - Ronan Maguire
- Biology Department; Maynooth University; Maynooth Ireland
| | - Kevin Kavanagh
- Biology Department; Maynooth University; Maynooth Ireland
| | - Pablo J. Sanz Miguel
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea, ISQCH; Universidad de Zaragoza-CSIC; 50009 Zaragoza Spain
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16
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Vellé A, Cebollada A, Macías R, Iglesias M, Gil-Moles M, Sanz Miguel PJ. From Imidazole toward Imidazolium Salts and N-Heterocyclic Carbene Ligands: Electronic and Geometrical Redistribution. ACS OMEGA 2017; 2:1392-1399. [PMID: 31457511 PMCID: PMC6641017 DOI: 10.1021/acsomega.7b00138] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/30/2017] [Indexed: 05/14/2023]
Abstract
Investigations dealing with N-heterocyclic carbenes and their derivatives are usually centered on the influence that they exert by acting as catalysts, ionic liquids, or metallodrugs and consequently on their capabilities to tune the properties and reactivity of these systems. In this context, we aimed to focus on the internal molecular changes undergone by imidazole derivatives, from electronic and geometrical points of view. This work represents an empirical evidence of the molecular modifications that an imidazole skeleton undergoes upon protonation, alkylation, and metalation.
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Affiliation(s)
- Alba Vellé
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Universidad de
Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Andrea Cebollada
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Universidad de
Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Ramón Macías
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Universidad de
Zaragoza-CSIC, 50009 Zaragoza, Spain
| | - Manuel Iglesias
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Universidad de
Zaragoza-CSIC, 50009 Zaragoza, Spain
| | | | - Pablo J. Sanz Miguel
- Departamento de Química
Inorgánica, Instituto de Síntesis Química y Catálisis
Homogénea (ISQCH), Universidad de
Zaragoza-CSIC, 50009 Zaragoza, Spain
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17
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Mandal S, Wang C, Prajapati RK, Kösters J, Verma S, Chi L, Müller J. Metal-Mediated Assembly of 1,N6-Ethenoadenine: From Surfaces to DNA Duplexes. Inorg Chem 2016; 55:7041-50. [DOI: 10.1021/acs.inorgchem.6b00927] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
| | - Can Wang
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany
| | - Rajneesh K. Prajapati
- Department of Chemistry, DST Thematic Unit of Excellence
on Soft Nanofabrication, Indian Institute of Technology−Kanpur, Kanpur, Uttar Pradesh 208016, India
| | | | - Sandeep Verma
- Department of Chemistry, DST Thematic Unit of Excellence
on Soft Nanofabrication, Indian Institute of Technology−Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Lifeng Chi
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149 Münster, Germany
- Institute
of Functional Nano and Soft Materials, Jiangsu Key Laboratory
for Carbon-Based Functional Materials and Devices, Soochow University, 199 Ren’ai
Road, Suzhou, 215123 Jiangsu, People’s Republic of China
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Cebollada A, Vellé A, Sanz Miguel PJ. Hirshfeld and DFT analysis of the N-heterocyclic carbene proligand methylenebis(N-butylimidazolium) as the acetonitrile-solvated diiodide salt. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2016; 72:456-9. [PMID: 27256692 DOI: 10.1107/s2053229616006781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 04/21/2016] [Indexed: 02/02/2023]
Abstract
N-Heterocyclic carbene (NHC) based systems are usually exploited in the exploration of catalytic mechanisms and processes in organocatalysis, and homo- and heterogeneous catalysis. However, their molecular structures have not received adequate attention. The NHC proligand methylenebis(N-butylimidazolium) has been synthesized as the acetonitrile solvate of the diiodide salt, C15H26N4(2+)·2I(-)·CH3CN [1,1'-methylenebis(3-butylimidazolium) diiodide acetonitrile monosolvate], and fully characterized. An interesting cation-anion connection pattern has been identified in the crystal lattice, in which three iodide anions interact simultaneously with the cisoid-oriented cation. A Hirshfeld surface analysis reveals the predominance of hydrogen bonding over anion-π interactions. This particular arrangement is observed in different methylene-bridged bis(imidazolium) cations bearing chloride or bromide counter-anions. Density functional theory (DFT) calculations with acetonitrile as solvent reproduce the geometry of the title cation.
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Affiliation(s)
- Andrea Cebollada
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Alba Vellé
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Pablo J Sanz Miguel
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, Zaragoza 50009, Spain
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