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Tannoux T, Auffrant A. Complexes featuring tridentate iminophosphorane ligands: Synthesis, reactivity, and catalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Chen X, Xiong Z, Yang M, Gong Y. Gas-phase synthesis and structure of thorium benzyne complexes. Chem Commun (Camb) 2022; 58:7018-7021. [PMID: 35638532 DOI: 10.1039/d2cc02057b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The thorium benzyne complex (η2-C6H4)ThCl3- was synthesized in the gas phase through consecutive decarboxylation and dehydrochlorination from the (C6H5CO2)ThCl4- precursor upon collision-induced dissociation. Theoretical calculations suggest that (η2-C6H4)ThCl3- exhibits a metallacyclopropene structure with two polarized Th-Cbenzyne σ bonds. This procedure can be generally extended to the synthesis of a wide range of gas-phase thorium benzyne complexes.
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Affiliation(s)
- Xiuting Chen
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China.
| | - Zhixin Xiong
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China. .,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meixian Yang
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China. .,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Gong
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China.
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Chen X, Xiong Z, Yang M, Gong Y. Discrimination and quantitation of halobenzoic acid positional isomers upon Th(IV) coordination by mass spectrometry. Chem Commun (Camb) 2022; 58:2658-2661. [PMID: 35137751 DOI: 10.1039/d1cc06925j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A fast and reliable mass spectrometry-based method has been developed to discriminate the positional isomers of o-, m- and p-C6H4XCO2H (X = F, Cl and Br). This is based on the distinct fragmentation patterns of isomeric ThCl4(C6H4XCO2)- ions generated by electrospray ionization of the solutions with C6H4XCO2H isomers and ThCl4. Moreover, the composition of these positional isomers can be conveniently quantified without any pre-treatment according to the proportion of gas-phase fragmentation products.
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Affiliation(s)
- Xiuting Chen
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
| | - Zhixin Xiong
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China. .,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Meixian Yang
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China. .,School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yu Gong
- Department of Radiochemistry, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.
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Dickie TKK, Hayes PG. Thorium(IV) Diphosphazide Complexes: CO2 Insertion into Th–C and Th–N Bonds. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tara K. K. Dickie
- Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
| | - Paul G. Hayes
- Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta T1K 3M4, Canada
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Köhler L, Patzschke M, Schmidt M, Stumpf T, März J. How 5 f Electron Polarisability Drives Covalency and Selectivity in Actinide N-Donor Complexes. Chemistry 2021; 27:18058-18065. [PMID: 34747538 PMCID: PMC9299701 DOI: 10.1002/chem.202102849] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Indexed: 01/12/2023]
Abstract
We report a series of isostructural tetravalent actinide (Th, U−Pu) complexes with the N‐donor ligand N,N’‐ethylene‐bis((pyrrole‐2‐yl)methanimine) (H2L, H2pyren). Structural data from SC‐XRD analysis reveal [An(pyren)2] complexes with different An−Nimine versus An−Npyrrolide bond lengths. Quantum chemical calculations elucidated the bonding situation, including differences in the covalent character of the coordinative bonds. A comparison to the intensely studied analogous N,N′‐ethylene‐bis(salicylideneimine) (H2salen)‐based complexes [An(salen)2] displays, on average, almost equal electron sharing of pyren or salen with the AnIV, pointing to a potential ligand‐cage‐driven complex stabilisation. This is shown in the fixed ligand arrangement of pyren and salen in the respective AnIV complexes. The overall bond strength of the pure N‐donor ligand pyren to AnIV (An=Th, U, Np, Pu) is slightly weaker than to salen, with the exception of the PaIV complex, which exhibits extraordinarily high electron sharing of pyren with PaIV. Such an altered ligand preference within the early AnIV series points to a specificity of the 5f1 configuration, which can be explained by polarisation effects of the 5 f electrons, allowing the strongest f electron backbonding from PaIV (5f1) to the N donors of pyren.
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Affiliation(s)
- Luisa Köhler
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Michael Patzschke
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Moritz Schmidt
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Thorsten Stumpf
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
| | - Juliane März
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, Bautzner Landstraße 400, 01328, Dresden, Germany
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Jha VK, Das S, Subramaniyan V, Guchhait T, Dakua KK, Mishra S, Mani G. Synthesis, structural characterization, and bonding analysis of two-coordinate copper(I) and silver(I) complexes of pyrrole-based bis(phosphinimine): new metal-pyrrole ring π-interactions. Dalton Trans 2021; 50:8036-8044. [PMID: 34013307 DOI: 10.1039/d1dt01091c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The reaction between 2,5-bis(diphenylphosphinomethyl)pyrrole and Me3SiN3 gave the new pyrrole-based bis(phosphinimine) L1H in an excellent yield. L1H reacts with [CuCl(COD)]2, AgBF4, or AgOTf to give the corresponding two-coordinate mononuclear ionic complex formulated as [M{(L1H)-κ2N,N}]+[X]- where M = Cu and Ag; X = [CuCl2], BF4 or OTf. Their single crystal X-ray diffraction studies confirmed the two-coordinate geometry formed by the chelate bonding mode of L1H. These 10-membered metalacycles exhibit planar chirality and were also characterized by spectroscopic methods. In addition, in all three structures, there exists a hitherto unknown π-interaction between the pyrrole ring atoms and metal, represented as η2-(Cα-N) in the copper(i) complex, and η3-(Cα-N-Cα') in the silver(i) complexes. These weak interactions were supported by DFT calculations in terms of their electron densities, non-covalent interaction plots and the decrease in the aromaticity of the pyrrole ring.
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Affiliation(s)
- Vikesh Kumar Jha
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Sanghamitra Das
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Vasudevan Subramaniyan
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Tapas Guchhait
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Kishan Kumar Dakua
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Sabyashachi Mishra
- Department of Chemistry and Centre for Computational and Data Sciences, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
| | - Ganesan Mani
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur-721 302, India.
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