Greatorex, S, Vincent, KB, Baldansuren, A et al. (4 more authors) (2019) Rigidification of a macrocyclic tris-catecholate scaffold leads to electronic localisation of its mixed valent redox product. Chemical Communications, 55 (16). pp. 2281-2284. ISSN 1359-7345
Abstract
The catecholate groups in [{Pt(L)}3(μ3-tctq)] (H6tctq = 2,3,6,7,10,11-hexahydroxy-4b,8b,12b,12d-tetramethyltribenzotriquinacene; L = a diphosphine chelate) undergo sequential oxidation to their semiquinonate forms by voltammetry, with ΔE½ = 160–170 mV. The monoradical [{Pt(dppb)}3(μ3-tctq•)]+ is valence-localised, with no evidence for intervalence charge transfer in its near-IR spectrum. This contrasts with previously reported [{Pt(dppb)}3(μ3-ctc•)]+ (H6ctc = cyclotricatechylene), based on the same macrocyclic tris-dioxolene scaffold, which exhibits partly delocalised (class II) mixed valency.
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Copyright, Publisher and Additional Information: | © The Royal Society of Chemistry 2019. This is an author produced version of a paper published in Chemical Communications. Uploaded in accordance with the publisher's self-archiving policy. Further re-use and further distribution is restricted. |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemistry (Leeds) > Inorganic Chemistry (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 Feb 2019 09:50 |
Last Modified: | 31 Jan 2020 01:39 |
Status: | Published |
Publisher: | Royal Society of Chemistry |
Identification Number: | https://doi.org/10.1039/C8CC10122A |
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