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Burgert BB, Sun X, Hauser A, Wingering PMR, Breher F, Roesky PW. Bi- and tridentate coordination behaviour of a novel bis(phosphinimino)methanide ligand. Chem Asian J 2024:e202301084. [PMID: 38197668 DOI: 10.1002/asia.202301084] [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: 12/01/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/11/2024]
Abstract
Herein, we report the synthesis of a novel ferrocenyl-functionalized bis(phosphinimino)methane ligand (CH2 (PPh2 NFc)2 ). Deprotonation of CH2 (PPh2 NFc)2 with KN(SiMe3 )2 gave the dimeric species [K{CH(PPh2 NFc)2 }]2 , which was further reacted with ECl2 (E=Ge, Sn) to yield the tetrylene compounds [{CH(PPh2 NFc)2 }ECl]. The ligand and the resulting tetrylenes were examined for their electrochemical properties with the aid of cyclic voltammetry. Furthermore, the reaction of the tetrylenes [{CH(PPh2 NFc)2 }ECl] with [AuC6 F5 (tht)] resulted in the bimetallic complexes [{(AuC6 F5 )CH(PPh2 NFc)2 }ECl] with an unusual Au coordination on the ligand backbone.
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Affiliation(s)
- Bastian B Burgert
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Xiaofei Sun
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Adrian Hauser
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Perrine M R Wingering
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Frank Breher
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131, Karlsruhe, Germany
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2
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Jain A, Karmakar H, Roesky PW, Panda TK. Role of Bis(phosphinimino)methanides as Universal Ligands in the Coordination Sphere of Metals across the Periodic Table. Chem Rev 2023. [PMID: 38048165 DOI: 10.1021/acs.chemrev.3c00336] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
The coordination chemistry of bis(phosphinimino)methanide ligands is widespread and accompanies a large number of metal ions in the periodic table ranging from lithium to neptunium. This unique class of ligand systems show copious coordination chemistry with the main-group, transition, rare-earth, and actinide metals and are considered to be among the most attractive ligand systems to researchers. The bis(phosphinimino)methanide metal complexes offer an extensive range of applications in various fields and have been demonstrated as one of the universal ligand systems to stabilize the metal ions in not only their usual but also their unusual oxidation states. The main-group and transition metal chemistry using bis(phosphinimino)methanides as ligands was last updated almost a decade ago. In this review, we provide a comprehensive overview of various state-of-the-art bis(phosphinimino)methanide-supported metal complexes by dealing with their synthesis, characterization, reactivity, and catalytic studies which were not included in the last critical reviews.
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Affiliation(s)
- Archana Jain
- Department of Physics and Chemistry, Mahatma Gandhi Institute of Technology (MGIT), Gandipet-500075, Hyderabad, Telangana, India
| | - Himadri Karmakar
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502284, Sangareddy, Telangana, India
| | - Peter W Roesky
- Institut für Anorganische Chemie, Karlsruher Institut für Technologie (KIT), Engesserstr. 15 Geb. 30.45, 76131 Karlsruhe, Germany
| | - Tarun K Panda
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi-502284, Sangareddy, Telangana, India
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3
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Hori M, Tsuji Y, Yoshizawa K. Bonding of C 1 fragments on metal nanoclusters: a search for methane conversion catalysts with swarm intelligence. Phys Chem Chem Phys 2021; 23:14004-14015. [PMID: 34151334 DOI: 10.1039/d1cp00345c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There is a need for a catalyst that can directly convert methane into useful substances. The use of Ni as a catalyst for the steam reforming of methane has led us to look at Ni nanoclusters as potential candidates for the direct conversion of methane. Fe, Co, Cu, and Zn nanoclusters are also focused on. How the type of C1 fragments (CH4, CH3, CH2, CH, and C) stabilized by the metal nanoclusters as adsorbed species varies with metal species is theoretically investigated. The particle swarm optimization algorithm, which is based on swarm intelligence, as well as density functional theory, is used for this calculation. The Ni nanoclusters are found to preferentially adsorb C as a stable species, the Fe and the Co nanoclusters both CH and CH3, and the Cu nanoclusters CH3; the Zn nanoclusters are found not to chemisorb any C1 fragment. The methane activation capacity can be ranked in the order of Ni > Fe > Co > Cu > Zn. The highest methane activation capacity of Ni is due to the strongest covalent nature of the interaction between Ni and the adsorbed species. The ionicity of the bond between Fe and the adsorbed species is higher than that between Co and the adsorbed species, while the covalent nature of the bonds is comparable for both. The weak methane activation ability of Cu compared to Fe, Co, and Ni is found to be due to the fact that both the covalent and ionic bond strengths between Cu and the adsorbed species are weak. Zn and the adsorbed species form neither ionic nor covalent bonds. These results indicate that the Fe and the Co nanoclusters as well as the Ni may lead to the over-oxidation of methane, whereas the Zn nanoclusters cannot activate methane in the first place; therefore, their application to direct methane conversion catalysts is unlikely. Since the Cu nanoclusters do not adsorb C and CH as stable species, but CH3 stably, the Cu nanoclusters are expected to work as a catalyst for the direct conversion of methane.
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Affiliation(s)
- Mikiya Hori
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Yuta Tsuji
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering and IRCCS, Kyushu University, Nishi-ku, Fukuoka 819-0395, Japan.
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4
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Klein M, Demirel N, Schinabeck A, Yersin H, Sundermeyer J. Cu(I) Complexes of Multidentate N,C,N- and P,C,P-Carbodiphosphorane Ligands and Their Photoluminescence. Molecules 2020; 25:E3990. [PMID: 32883039 PMCID: PMC7504792 DOI: 10.3390/molecules25173990] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 08/27/2020] [Accepted: 08/29/2020] [Indexed: 12/17/2022] Open
Abstract
A series of dinuclear copper(I) N,C,N- and P,C,P-carbodiphosphorane (CDP) complexes using multidentate ligands CDP(Py)2 (1) and (CDP(CH2PPh2)2 (13) have been isolated and characterized. Detailed structural information was gained by single-crystal XRD analyses of nine representative examples. The common structural motive is the central double ylidic carbon atom with its characteristic two lone pairs involved in the binding of two geminal L-Cu(I) fragments at Cu-Cu distances in the range 2.55-2.67 Å. In order to enhance conformational rigidity within the characteristic Cu-C-Cu triangle, two types of chelating side arms were symmetrically attached to each phosphorus atom: two 2-pyridyl functions in ligand CDP(Py)2 (1) and its dinuclear copper complexes 2-9 and 11, as well as two diphenylphosphinomethylene functions in ligand CDP(CH2PPh2)2 (13) and its di- and mononuclear complexes 14-18. Neutral complexes were typically obtained via the reaction of 1 with Cu(I) species CuCl, CuI, and CuSPh or via the salt elimination reaction of [(CuCl)2(CDP(Py)2] (2) with sodium carbazolate. Cationic Cu(I) complexes were prepared upon treating 1 with two equivalents of [Cu(NCMe)4]PF6, followed by the addition of either two equivalents of an aryl phosphine (PPh3, P(C6H4OMe)3) or one equivalent of bisphosphine ligands bis[(2-diphenylphosphino)phenyl] ether (DPEPhos), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (XantPhos), or 1,1'-bis(diphenyl-phosphino) ferrocene (dppf). For the first time, carbodiphosphorane CDP(CH2PPh2)2 (13) could be isolated upon treating its precursor [CH(dppm)2]Cl (12) with NaNH2 in liquid NH3. A protonated and a deprotonated derivative of ligand 13 were prepared, and their coordination was compared to neutral CDP ligand 13. NMR analysis and DFT calculations reveal that the most stable tautomer of 13 does not show a CDP (or carbone) structure in its uncoordinated base form. For most of the prepared complexes, photoluminescence upon irradiation with UV light at room temperature was observed. Quantum yields (ΦPL) were determined to be 36% for dicationic [(CuPPh3)2(CDP(Py)2)](PF6)2 (4) and 60% for neutral [(CuSPh)2(CDP(CH2PPh2)2] (16).
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Affiliation(s)
- Marius Klein
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
| | - Nemrud Demirel
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
| | - Alexander Schinabeck
- Institute for Physical Chemistry, University of Regensburg, 93040 Regensburg, Germany; (A.S.); (H.Y.)
| | - Hartmut Yersin
- Institute for Physical Chemistry, University of Regensburg, 93040 Regensburg, Germany; (A.S.); (H.Y.)
| | - Jörg Sundermeyer
- Department of Chemistry and Science, Materials Sciences Center, Philipps University of Marburg, 35043 Marburg, Germany; (M.K.); (N.D.)
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Ge S, Zhao J, Ferguson MJ, Ma G, Cavell RG. Rare Carbon-Bridged Bimetallic Lanthanide (Nd or Sm) and Tl(I) Geminal Carbon Derivatives of a Bis(iminophosphorano)methanediide. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00836] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sai Ge
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, People’s Republic of China
| | - Jianguo Zhao
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, Shanxi Province 037009, People’s Republic of China
| | - Michael J. Ferguson
- Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Guibin Ma
- Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Ronald G. Cavell
- Chemistry Department, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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6
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Li J, Zhao J, Ma G, McDonald R, Cavell RG. Mono and bis carbene neodymium(III) spirocyclic complexes with a cumulene carbon metal structure. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.05.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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7
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Li J, Zhao J, Ferguson MJ, McDonald R, Ma G, Cavell RG. Synthesis, structures and reactivity of bis(iminophosphorano)methanide chelate complexes with transition metal of cobalt, nickel, palladium and iridium. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.04.060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Synthesis and structures of bis(iminophosphorano)methanide chelate complexes with zinc and group 13. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Ziegler MS, Torquato NA, Levine DS, Nicolay A, Celik H, Tilley TD. Dicopper Alkyl Complexes: Synthesis, Structure, and Unexpected Persistence. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00443] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Micah S. Ziegler
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Nicole A. Torquato
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Daniel S. Levine
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - Amélie Nicolay
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Hasan Celik
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
| | - T. Don Tilley
- Department of Chemistry, University of California, Berkeley, California 94720-1460, United States
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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10
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Nie HH, Han YZ, Tang Z, Yang SY, Teo BK. Hydride Induced Formation and Optical Properties of Tetrahedral [Cu4(μ4-H)(μ2-X)2(PPh2Py)4]+ Clusters (X = Cl, Br; Py = pyridyl). J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1359-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Dianionic Carbon-Bridged Scandium-Copper/Silver Heterobimetallic Complexes: Synthesis, Bonding, and Reactivity. Chemistry 2018; 24:5637-5643. [DOI: 10.1002/chem.201706147] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Indexed: 11/07/2022]
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12
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Troadec T, Wasano T, Lenk R, Baceiredo A, Saffon-Merceron N, Hashizume D, Saito Y, Nakata N, Branchadell V, Kato T. Donor-Stabilized Silylene/Phosphine-Supported Carbon(0) Center with High Electron Density. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702858] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Thibault Troadec
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Tatsuya Wasano
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Romaric Lenk
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | - Antoine Baceiredo
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
| | | | - Daisuke Hashizume
- Materials Characterization Support Unit; RIKEN Center for Emergent Matter Science (CEMS); Wako Saitama 351-0198 Japan
| | - Yosuke Saito
- Department of Chemistry, Graduate School of Science and Engineering Departament; Saitama University; Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Norio Nakata
- Department of Chemistry, Graduate School of Science and Engineering Departament; Saitama University; Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Vicenç Branchadell
- Departament de Química; Universitat Autònoma de Barcelona; 08193 Bellaterra Spain
| | - Tsuyoshi Kato
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069; 31062 Toulouse France
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13
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Troadec T, Wasano T, Lenk R, Baceiredo A, Saffon-Merceron N, Hashizume D, Saito Y, Nakata N, Branchadell V, Kato T. Donor-Stabilized Silylene/Phosphine-Supported Carbon(0) Center with High Electron Density. Angew Chem Int Ed Engl 2017; 56:6891-6895. [PMID: 28474846 DOI: 10.1002/anie.201702858] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Indexed: 11/08/2022]
Abstract
An isolable donor-stabilized silavinylidene phosphorane was synthesized. This molecule, which can also be regarded as a new carbon(0) complex featuring a phosphine and a donor-stabilized silylene ligand, presents a central carbon atom with a remarkably high electron density (-1.82). Furthermore, the experimental electron-density study of this compound demonstrates the delocalization of the σ-lone pair at the central carbon atom toward the silicon center, a feature which is remarkably different from electronic situation of other bent-allene-type molecules. This result clearly demonstrates the powerful electron-donating ability of donor-stabilized silylene ligands, as well as their excellent electron-acceptor properties.
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Affiliation(s)
- Thibault Troadec
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Tatsuya Wasano
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Romaric Lenk
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Antoine Baceiredo
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
| | - Nathalie Saffon-Merceron
- Université de Toulouse, UPS, and CNRS, ICT FR2599, 118 route de Narbonne, 31062, Toulouse, France
| | - Daisuke Hashizume
- Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama, 351-0198, Japan
| | - Yosuke Saito
- Department of Chemistry, Graduate School of Science and Engineering Departament, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Norio Nakata
- Department of Chemistry, Graduate School of Science and Engineering Departament, Saitama University, Shimo-okubo, Sakura-ku, Saitama, 338-8570, Japan
| | - Vicenç Branchadell
- Departament de Química, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain
| | - Tsuyoshi Kato
- Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, 31062, Toulouse, France
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14
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Adams RD, Luo Z. High nuclearity clusters containing methyl groups. Synthesis and structures of pentaosmium-gold carbonyl cluster compounds. J Organomet Chem 2016. [DOI: 10.1016/j.jorganchem.2015.07.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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15
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Campos J, López-Serrano J, Peloso R, Carmona E. Methyl Complexes of the Transition Metals. Chemistry 2016; 22:6432-57. [PMID: 26991740 DOI: 10.1002/chem.201504483] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Indexed: 01/11/2023]
Abstract
Organometallic chemistry can be considered as a wide area of knowledge that combines concepts of classic organic chemistry, that is, based essentially on carbon, with molecular inorganic chemistry, especially with coordination compounds. Transition-metal methyl complexes probably represent the simplest and most fundamental way to view how these two major areas of chemistry combine and merge into novel species with intriguing features in terms of reactivity, structure, and bonding. Citing more than 500 bibliographic references, this review aims to offer a concise view of recent advances in the field of transition-metal complexes containing M-CH3 fragments. Taking into account the impressive amount of data that are continuously provided by organometallic chemists in this area, this review is mainly focused on results of the last five years. After a panoramic overview on M-CH3 compounds of Groups 3 to 11, which includes the most recent landmark findings in this area, two further sections are dedicated to methyl-bridged complexes and reactivity.
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Affiliation(s)
- Jesús Campos
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK
| | - Joaquín López-Serrano
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Riccardo Peloso
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain
| | - Ernesto Carmona
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica and Centro de Innovación en Química, Avanzada (ORFEO-CINQA), Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas (CSIC), Avenida Américo Vespucio 49, 41092, Sevilla, Spain.
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16
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Gessner VH, Becker J, Feichtner KS. Carbene Complexes Based on Dilithium Methandiides. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500051] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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17
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Cheisson T, Auffrant A. Versatile coordination chemistry of a bis(methyliminophosphoranyl)pyridine ligand on copper centres. Dalton Trans 2014; 43:13399-409. [PMID: 25076168 DOI: 10.1039/c4dt01794c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The coordination of a bis(methyliminophosphoranyl)pyridine ligand (L) to copper centres was studied. The use of copper(I) bromide precursors gave access to [LCuBr] (2) in which only one iminophosphorane arm is coordinated to the metal, as observed by X-ray crystallography and MAS (31)P NMR. Its fluxional behaviour in solution was demonstrated by VT-(31)P NMR, and investigated by DFT calculations. On the other hand, coordination of L to [Cu(CH3CN)4]PF6 gave a dimer [L2Cu2](PF6)2 (3) in which the two copper centres do not have the same coordination sphere as shown by X-ray crystallography. Addition of a strong ligand such as PEt3 allows the preparation of a cationic monomeric copper complex (4) in which L has a behaviour similar to that observed for 2. Synthesis of copper(II) complexes was also achieved by chemical oxidation of 2, which shows an irreversible oxidation at -0.36 vs. Fc(+)/Fc, or directly via the coordination of L to CuBr2. In [LCuBr2] (5), L adopts a pincer coordination. Finally, the catalytic behaviour of copper(I) complexes 2 and 3 was investigated in cyclopropanation reactions and [3 + 2] cycloadditions.
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Affiliation(s)
- Thibault Cheisson
- Laboratoire de Chimie Moléculaire, Ecole Polytechnique, UMR CNRS 9168, F-91128 Palaiseau Cedex, France.
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18
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Hui AK, Losovyj Y, Lord RL, Caulton KG. Chemical implications of incompatible ligand versus metal coordination geometry preferences. Inorg Chem 2014; 53:3039-47. [PMID: 24601536 DOI: 10.1021/ic402866e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Binding an electron deficient pincer ligand which strongly dictates planar, mer stereochemistry, to a metal which prefers tetrahedral structure, e.g., d(10) CuCl, is explored for possible intramolecular redox chemistry. Experiment shows that the pincer ligand 2,2'-bis-tetrazinyl pyridine, btzp, forms a complex (btzp)CuCl which is a chloride-bridged polymer in the solid state, hence with 20 valence electrons around copper. DFT calculations show that even the monomer has nonplanar copper with the tetrazinyl nitrogen lone pairs somewhat misdirected away from copper, with long Cu/N bonds, in a singlet ground state; 13.9 kcal/mol less stable is a triplet, whose electronic structure shows one electron from the ground state Cu(I) has been transferred to a pincer π* orbital. Outer sphere electron transfer to (btzp)CuCl yields (btzp)Cu where the added electron has gone into the pincer, to leave a ligand-centered radical, characterized by EPR, chemical reactivity, and X-ray photoelectron spectroscopy.
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Affiliation(s)
- Alice K Hui
- Indiana University , Department of Chemistry, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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19
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Leung WP, Chan YC, Mak TCW. Synthesis and characterization of an octanuclear copper(i) methanediide cluster. Dalton Trans 2014; 43:63-6. [DOI: 10.1039/c3dt52833b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Zhao F, Zhan M, Zhang WX, Xi Z. DFT Studies on the Reaction Mechanisms of 1,4-Dilithio 1,3-Dienes with Nitriles. Organometallics 2013. [DOI: 10.1021/om300869t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Fei Zhao
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s
Republic of China
| | - Ming Zhan
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s
Republic of China
| | - Wen-Xiong Zhang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s
Republic of China
| | - Zhenfeng Xi
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, People’s
Republic of China
- State
Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, People’s
Republic of China
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21
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Abellán-López A, Chicote MT, Bautista D, Vicente J. From Chelate C,N-Cyclopalladated Oximes to C,N,N′-, C,N,S-, or C,N,C′-Pincer Palladium(II) Complexes by Formation of Oxime Ether Ligands. Organometallics 2012. [DOI: 10.1021/om3007213] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Antonio Abellán-López
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - María-Teresa Chicote
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - Delia Bautista
- SAI, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
| | - José Vicente
- Grupo de Química Organometálica,
Departamento de Química Inorgánica, Universidad de Murcia, Apartado 4021, 30071 Murcia, Spain
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22
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de Boer SY, Gloaguen Y, Reek JNH, Lutz M, van der Vlugt JI. N–H bond activation by palladium(ii) and copper(i) complexes featuring a reactive bidentate PN-ligand. Dalton Trans 2012; 41:11276-83. [DOI: 10.1039/c2dt31009k] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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23
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Ma G, Ferguson MJ, McDonald R, Cavell RG. Actinide metals with multiple bonds to carbon: synthesis, characterization, and reactivity of U(IV) and Th(IV) bis(iminophosphorano)methandiide pincer carbene complexes. Inorg Chem 2011; 50:6500-8. [PMID: 21667978 DOI: 10.1021/ic102537q] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Treatment of ThCl(4)(DME)(2) or UCl(4) with 1 equiv of dilithiumbis(iminophosphorano) methandiide, [Li(2)C(Ph(2)P═NSiMe(3))(2)] (1), afforded the chloro actinide carbene complexes [Cl(2)M(C(Ph(2)P═NSiMe(3))(2))] (2 (M = Th) and 3 (M = U)) in situ. Stable PCP metal-carbene complexes [Cp(2)Th(C(Ph(2)P═NSiMe(3))(2))] (4), [Cp(2)U(C(Ph(2)P═NSiMe(3))(2))] (5), [TpTh(C(Ph(2)P═NSiMe(3))(2))Cl] (6), and [TpU(C(Ph(2)P═NSiMe(3))(2))Cl] (7) were generated from 2 or 3 by further reaction with 2 equiv of thallium(I) cyclopentadienide (CpTl) in THF to yield 4 or 5 or with 1 equiv of potassium hydrotris(pyrazol-1-yl) borate (TpK) also in THF to give 6 or 7, respectively. The derivative complexes were isolated, and their crystal structures were determined by X-ray diffraction. All of these U (or Th)-carbene complexes (4-7) possess a very short M (Th or U)═carbene bond with evidence for multiple bond character. Gaussian 03 DFT calculations indicate that the M═C double bond is constructed by interaction of the 5f and 6d orbitals of the actinide metal with carbene 2p orbitals of both π and σ character. Complex 3 reacted with acetonitrile or benzonitrile to cyclo-add C≡N to the U═carbon double bond, thereby forming a new C-C bond in a new chelated quadridentate ligand in the bridged dimetallic complexes (9 and 10). A single carbon-U bond is retained. The newly coordinated uranium complex dimerizes with one equivalent of unconverted 3 using two chlorides and the newly formed imine derived from the nitrile as three connecting bridges. In addition, a new crystal structure of [CpUCl(3)(THF)(2)] (8) was determined by X-ray diffraction.
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Affiliation(s)
- Guibin Ma
- Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6G 2G2
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24
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van der Vlugt JI, Pidko EA, Bauer RC, Gloaguen Y, Rong MK, Lutz M. Dinuclear Copper(I) Thiolate Complexes with a Bridging Noninnocent PNP Ligand. Chemistry 2011; 17:3850-4. [DOI: 10.1002/chem.201002666] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 01/31/2011] [Indexed: 11/12/2022]
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