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1H, 13C NMR and UV spectroscopy studies of gold(III)-tetracyanide complex with l-cysteine, glutathione, captopril, l-methionine and dl-seleno-methionine in aqueous solution by Bassem A. Al-Maythalony; Mohamed I.M. Wazeer; Anvarhusein A. Isab is a Chemistry article available to read on EtoBox.

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Auricyanide [Au(CN) 4 ] À interaction with biologically important thiols, thioether and selenoether were carried out and monitored using 1 H, 13 C NMR and UV spectroscopy. These ligands include L-cysteine, glutathione, captopril, L-methionine and DL-seleno-methionine. Thiols show very strong affinity to be oxidized into the disulfide by auricyanide, which gets reduced to aurocyanide [Au(CN) 2 ] À . L-cysteine reaction mechanism with [Au(CN) 4 ] À was found to be dependent on reactants mole ratio. While L-methionine was completely inert toward auricyanide, DL-Se-methionine showed some reactivity with [Au(CN) 4 ] À after raising solution pH to 12 that facilitated cyanide exchange.

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Author

Bassem A. Al-Maythalony; Mohamed I.M. Wazeer; Anvarhusein A. Isab

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0020-1693)

Published

2010

Language

EN

Field

Chemistry (Physical Sciences)