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Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer
The redox chemistry of the heterobimetallic triple‐decker complexes [(Cp*Fe)(Cp′′′Co)(μ,η(5):η(4)‐E(5))] (E=P (1), As (2), Cp*=1,2,3,4,5‐pentamethyl‐cyclopentadienyl, Cp′′′=1,2,4‐tri‐tertbutyl‐cyclopentadienyl) and [(Cp′′′Co)(Cp′′′Ni)(μ,η(3):η(3)‐E(3))] (E=P (10), As (11)) was investigated. Compound...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360055/ https://www.ncbi.nlm.nih.gov/pubmed/33857335 http://dx.doi.org/10.1002/chem.202100844 |
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author | Piesch, Martin Reichl, Stephan Riesinger, Christoph Seidl, Michael Balazs, Gabor Scheer, Manfred |
author_facet | Piesch, Martin Reichl, Stephan Riesinger, Christoph Seidl, Michael Balazs, Gabor Scheer, Manfred |
author_sort | Piesch, Martin |
collection | PubMed |
description | The redox chemistry of the heterobimetallic triple‐decker complexes [(Cp*Fe)(Cp′′′Co)(μ,η(5):η(4)‐E(5))] (E=P (1), As (2), Cp*=1,2,3,4,5‐pentamethyl‐cyclopentadienyl, Cp′′′=1,2,4‐tri‐tertbutyl‐cyclopentadienyl) and [(Cp′′′Co)(Cp′′′Ni)(μ,η(3):η(3)‐E(3))] (E=P (10), As (11)) was investigated. Compound 1 and 2 could be oxidized to the monocations 3 and 4 and further to the dications 5 and 6, while the initially folded cyclo‐E(5) ligand planarizes upon oxidation. The reduction leads to an opposite change in the geometry of the middle deck, which is now folded stronger into the direction of the other metal fragment (formation of monoanions 7 and 8). For the arsenic compound 8, a different behavior is found since a fragmentation into an As(6) (9) and As(3) ligand complex occurs. The Co and Ni triple‐decker complexes 10 and 11 can be oxidized initially to the heterometallic monocations 12 and 13, which are not stable in solution and convert selectively into the homometallic nickel complexes 14 and 15 and the cobalt complexes 16 and 17. This behavior was further proven by the oxidation of [(Cp′′′Co)(Cp′′Ni)(μ,η(3):η(2)‐P(3))] (19, Cp′′=1,3‐di‐tertbutyl‐cyclopentadienyl) comprising two different Cp ligands. The transfer of {Cp(R)M} fragments can be suppressed when a {W(CO)(5)} unit is coordinated to the P(3) ligand (20) prior to the oxidation and the mixed cobalt and nickel cation 21 can be isolated. The reduction of 10 and 11 yields the heterometallic monoanions 22 and 23, where no transfer of the {Cp(R)M} fragments is observed. |
format | Online Article Text |
id | pubmed-8360055 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-83600552021-08-17 Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer Piesch, Martin Reichl, Stephan Riesinger, Christoph Seidl, Michael Balazs, Gabor Scheer, Manfred Chemistry Full Papers The redox chemistry of the heterobimetallic triple‐decker complexes [(Cp*Fe)(Cp′′′Co)(μ,η(5):η(4)‐E(5))] (E=P (1), As (2), Cp*=1,2,3,4,5‐pentamethyl‐cyclopentadienyl, Cp′′′=1,2,4‐tri‐tertbutyl‐cyclopentadienyl) and [(Cp′′′Co)(Cp′′′Ni)(μ,η(3):η(3)‐E(3))] (E=P (10), As (11)) was investigated. Compound 1 and 2 could be oxidized to the monocations 3 and 4 and further to the dications 5 and 6, while the initially folded cyclo‐E(5) ligand planarizes upon oxidation. The reduction leads to an opposite change in the geometry of the middle deck, which is now folded stronger into the direction of the other metal fragment (formation of monoanions 7 and 8). For the arsenic compound 8, a different behavior is found since a fragmentation into an As(6) (9) and As(3) ligand complex occurs. The Co and Ni triple‐decker complexes 10 and 11 can be oxidized initially to the heterometallic monocations 12 and 13, which are not stable in solution and convert selectively into the homometallic nickel complexes 14 and 15 and the cobalt complexes 16 and 17. This behavior was further proven by the oxidation of [(Cp′′′Co)(Cp′′Ni)(μ,η(3):η(2)‐P(3))] (19, Cp′′=1,3‐di‐tertbutyl‐cyclopentadienyl) comprising two different Cp ligands. The transfer of {Cp(R)M} fragments can be suppressed when a {W(CO)(5)} unit is coordinated to the P(3) ligand (20) prior to the oxidation and the mixed cobalt and nickel cation 21 can be isolated. The reduction of 10 and 11 yields the heterometallic monoanions 22 and 23, where no transfer of the {Cp(R)M} fragments is observed. John Wiley and Sons Inc. 2021-05-19 2021-06-21 /pmc/articles/PMC8360055/ /pubmed/33857335 http://dx.doi.org/10.1002/chem.202100844 Text en © 2021 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH https://creativecommons.org/licenses/by-nc/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ (https://creativecommons.org/licenses/by-nc/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. |
spellingShingle | Full Papers Piesch, Martin Reichl, Stephan Riesinger, Christoph Seidl, Michael Balazs, Gabor Scheer, Manfred Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title | Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title_full | Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title_fullStr | Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title_full_unstemmed | Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title_short | Redox Chemistry of Heterobimetallic Polypnictogen Triple‐Decker Complexes – Rearrangement, Fragmentation and Transfer |
title_sort | redox chemistry of heterobimetallic polypnictogen triple‐decker complexes – rearrangement, fragmentation and transfer |
topic | Full Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8360055/ https://www.ncbi.nlm.nih.gov/pubmed/33857335 http://dx.doi.org/10.1002/chem.202100844 |
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