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Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding
The octacarbonyl cation and anion complexes of actinide metals [An(CO)(8)](+/−) (An=Th, U) are prepared in the gas phase and are studied by mass‐selected infrared photodissociation spectroscopy. Both the octacarbonyl cations and anions have been characterized to be saturated coordinated complexes. Q...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6772027/ https://www.ncbi.nlm.nih.gov/pubmed/31276242 http://dx.doi.org/10.1002/chem.201902625 |
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author | Chi, Chaoxian Pan, Sudip Jin, Jiaye Meng, Luyan Luo, Mingbiao Zhao, Lili Zhou, Mingfei Frenking, Gernot |
author_facet | Chi, Chaoxian Pan, Sudip Jin, Jiaye Meng, Luyan Luo, Mingbiao Zhao, Lili Zhou, Mingfei Frenking, Gernot |
author_sort | Chi, Chaoxian |
collection | PubMed |
description | The octacarbonyl cation and anion complexes of actinide metals [An(CO)(8)](+/−) (An=Th, U) are prepared in the gas phase and are studied by mass‐selected infrared photodissociation spectroscopy. Both the octacarbonyl cations and anions have been characterized to be saturated coordinated complexes. Quantum chemical calculations by using density functional theory show that the [Th(CO)(8)](+) and [Th(CO)(8)](−) complexes have a distorted octahedral (D (4h)) equilibrium geometry and a doublet electronic ground state. Both the [U(CO)(8)](+) cation and the [U(CO)(8)](−) anion exhibit cubic structures (O(h)) with a (6)A(1g) ground state for the cation and a (4)A(1g) ground state for the anion. The neutral species [Th(CO)(8)] (O(h); (1)A(1g)) and [U(CO)(8)] (D (4h); (5)B(1u)) have also been calculated. Analysis of their electronic structures with the help on an energy decomposition method reveals that, along with the dominating 6d valence orbitals, there are significant 5f orbital participation in both the [An]←CO σ donation and [An]→CO π back donation interactions in the cations and anions, for which the electronic reference state of An has both occupied and vacant 5f AOs. The trend of the valence orbital contribution to the metal–CO bonds has the order of 6d≫5f>7s≈7p, with the 5f orbitals of uranium being more important than the 5f orbitals of thorium. |
format | Online Article Text |
id | pubmed-6772027 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-67720272019-10-07 Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding Chi, Chaoxian Pan, Sudip Jin, Jiaye Meng, Luyan Luo, Mingbiao Zhao, Lili Zhou, Mingfei Frenking, Gernot Chemistry Full Papers The octacarbonyl cation and anion complexes of actinide metals [An(CO)(8)](+/−) (An=Th, U) are prepared in the gas phase and are studied by mass‐selected infrared photodissociation spectroscopy. Both the octacarbonyl cations and anions have been characterized to be saturated coordinated complexes. Quantum chemical calculations by using density functional theory show that the [Th(CO)(8)](+) and [Th(CO)(8)](−) complexes have a distorted octahedral (D (4h)) equilibrium geometry and a doublet electronic ground state. Both the [U(CO)(8)](+) cation and the [U(CO)(8)](−) anion exhibit cubic structures (O(h)) with a (6)A(1g) ground state for the cation and a (4)A(1g) ground state for the anion. The neutral species [Th(CO)(8)] (O(h); (1)A(1g)) and [U(CO)(8)] (D (4h); (5)B(1u)) have also been calculated. Analysis of their electronic structures with the help on an energy decomposition method reveals that, along with the dominating 6d valence orbitals, there are significant 5f orbital participation in both the [An]←CO σ donation and [An]→CO π back donation interactions in the cations and anions, for which the electronic reference state of An has both occupied and vacant 5f AOs. The trend of the valence orbital contribution to the metal–CO bonds has the order of 6d≫5f>7s≈7p, with the 5f orbitals of uranium being more important than the 5f orbitals of thorium. John Wiley and Sons Inc. 2019-08-23 2019-09-06 /pmc/articles/PMC6772027/ /pubmed/31276242 http://dx.doi.org/10.1002/chem.201902625 Text en © 2019 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Full Papers Chi, Chaoxian Pan, Sudip Jin, Jiaye Meng, Luyan Luo, Mingbiao Zhao, Lili Zhou, Mingfei Frenking, Gernot Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title | Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title_full | Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title_fullStr | Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title_full_unstemmed | Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title_short | Octacarbonyl Ion Complexes of Actinides [An(CO)(8)](+/−) (An=Th, U) and the Role of f Orbitals in Metal–Ligand Bonding |
title_sort | octacarbonyl ion complexes of actinides [an(co)(8)](+/−) (an=th, u) and the role of f orbitals in metal–ligand bonding |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6772027/ https://www.ncbi.nlm.nih.gov/pubmed/31276242 http://dx.doi.org/10.1002/chem.201902625 |
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