Complexation and proton transfer by hydroxamic acids in model inhibited metallohydrolases: Formation of metal hydroxamate trimers

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Abstract

Reaction between the dimeric metal complexes, [M2(μ-OAc F)2(OAcF)2(μ-H 2O)(tmen)2], M=Co(II), Ni(II), and aceto- and benzohydroxamic acids (AHA, BHA) gives the novel trimeric complexes, [M 3(μ-OAcF)4(μ-RA)2(tmen) 2], M=Co(II), Ni(II); RA=AA, BA, in which each hydroxamate bridges two metal centres via its deprotonated hydroxyl and the carbonyl oxygen bonds one metal centre only together with the doubly protonated salt [(tmen)·2H][OAcF]2. In contrast, self-assembly from M(OAcF)2·4H2O, tmen and RHA gives the dibridged hydroxamate dimers [M2(μ-OAcF)(μ-RA) 2(tmen)2] [OAcF]. © 2004 Elsevier B.V. All rights reserved.

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Brown, D. A., Clarkson, G. J., Fitzpatrick, N. J., Glass, W. K., Hussein, A. J., Kemp, T. J., & Müller-Bunz, H. (2004). Complexation and proton transfer by hydroxamic acids in model inhibited metallohydrolases: Formation of metal hydroxamate trimers. Inorganic Chemistry Communications, 7(4), 495–498. https://doi.org/10.1016/j.inoche.2003.12.038

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