Loughrey, J, Sproules, S, McInnes, EJ et al. (2 more authors) (2014) Stable mixed-valent radicals from platinum(II) complexes of a bis(dioxolene) ligand. Chemistry - A European Journal, 20 (21). 6272 - 6276. ISSN 0947-6539
Abstract
Three diplatinum(II) complexes [{PtL}2(μ-thea)] (H4thea = 2,3,6,7-tetrahydroxy-9,10-dimethyl-9,10-dihydro-9,10-ethanoanthracene) have been prepared, with diphosphine or bipyridyl "L" co-ligands. One-electron oxidation of these complexes gave radical cations containing a mixed-valent [thea·](3-) ligand with discrete catecholate and semiquinonate centers separated by quaternary methylene spacers. The electronic character of these radicals is near the Robin-Day class II/III border determined by UV/Vis/NIR and EPR spectroscopies. Crystal-structure determinations and a DFT calculation imply that oxidation of the thea(4-) ligand may lead to an increased through-space interaction between the dioxolene π systems.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | charge transfer; dioxolenes; mixed-valent compounds; platinum; radical ions |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Feb 2015 10:07 |
Last Modified: | 30 Jun 2020 14:49 |
Published Version: | http://dx.doi.org/10.1002/chem.201304848 |
Status: | Published |
Publisher: | Wiley-VCH Verlag |
Identification Number: | 10.1002/chem.201304848 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83004 |