The trivalent copper complex of a conjugated bis-dithiocarbazate schiff base: stabilization of Cu in three different oxidation states

Ali, Mohammad Akbar, Bernhardt, Paul V., Brax, Mathilde A. H., England, Jason, Farlow, Anthony J., Hanson, Graeme R., Yeng, Lee Len, Mirza, Aminul Huq and Wieghardt, Karl (2013) The trivalent copper complex of a conjugated bis-dithiocarbazate schiff base: stabilization of Cu in three different oxidation states. Inorganic Chemistry, 52 3: 1650-1657. doi:10.1021/ic302596h


Author Ali, Mohammad Akbar
Bernhardt, Paul V.
Brax, Mathilde A. H.
England, Jason
Farlow, Anthony J.
Hanson, Graeme R.
Yeng, Lee Len
Mirza, Aminul Huq
Wieghardt, Karl
Title The trivalent copper complex of a conjugated bis-dithiocarbazate schiff base: stabilization of Cu in three different oxidation states
Journal name Inorganic Chemistry   Check publisher's open access policy
ISSN 0020-1669
1520-510X
Publication date 2013-02
Sub-type Article (original research)
DOI 10.1021/ic302596h
Volume 52
Issue 3
Start page 1650
End page 1657
Total pages 8
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2014
Language eng
Abstract The new tribasic N2S2 ligand H3ttfasbz has been synthesized by condensation of 4-thenoyl 2,2,2-trifluoroacetone and S-benzyl dithiocarbazate. On complexation with copper(II) acetate, spontaneous oxidation to the CuIII oxidation state is observed, and the complex [Cu(ttfasbz)] has been isolated and characterized structurally. Reduction to the EPR active CuII analogue has been achieved chemically and also electrochemically, and in both cases, the process is totally reversible. The CuIII/II redox potential of the complex is remarkably low and similar to that of the ferrocenium/ferrocene couple. Further reduction to the formally monovalent (d10) dianion [CuI(ttfasbz)]2- may be achieved electrochemically. Computational chemistry demonstrates that the three redox states [Cu(ttfasbz)], [Cu(ttfasbz)]-, and [Cu(ttfasbz)]2- are truly CuIII, CuII, and CuI complexes, respectively, and the potentially noninnocent ligand does not undergo any redox reactions.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Chemistry and Molecular Biosciences
Centre for Advanced Imaging Publications
 
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