TY  - JOUR
AU  - Vujačić, Ana V.
AU  - Savić, J.Z.
AU  - Sovilj, Sofija P.
AU  - Mészáros, Szécsényi K.
AU  - Todorović, Nina
AU  - Petković, M.Z.
AU  - Vasić, Vesna M.
PY  - 2009
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/601
AB  - The kinetics of the reaction between the tetrachloroaurate(III) ion and l-methionine (l-Met) (0.1 M HClO4, pH 1.0-2.5) have been studied spectrophotometrically using a stopped-flow technique at different temperatures. Initially, the fast substitution reaction was ascribed to the formation of the short-lived square-planar Au(III)-(l-Met) that was followed by the replacement of a Cl- ligand and a subsequent, slower reduction to Au(I)-(l-Met). This is an intermolecular process, involving attack on the [AuCl4]- complex by an outer-sphere l-methionine. The activation parameters (ΔH≠ and ΔS≠) for substitution and reduction were determined. IR spectroscopy indicates that l-methionine acts as a bidentate ligand, most likely coordinating via the S and N atoms, while 1H and 13C NMR data indicate methionine sulfoxide as the final product. Finally, the components of the reaction were treated thermally in order to investigate the solid phase synthesis of the resulting complex.
PB  - Oxford : Pergamon-Elsevier Science Ltd
T2  - Polyhedron
T1  - Mechanism of complex formation between [AuCl4]- and l-methionine
VL  - 28
IS  - 3
SP  - 593
EP  - 599
DO  - 10.1016/j.poly.2008.11.045
ER  - 

@article{
author = "Vujačić, Ana V. and Savić, J.Z. and Sovilj, Sofija P. and Mészáros, Szécsényi K. and Todorović, Nina and Petković, M.Z. and Vasić, Vesna M.",
year = "2009",
abstract = "The kinetics of the reaction between the tetrachloroaurate(III) ion and l-methionine (l-Met) (0.1 M HClO4, pH 1.0-2.5) have been studied spectrophotometrically using a stopped-flow technique at different temperatures. Initially, the fast substitution reaction was ascribed to the formation of the short-lived square-planar Au(III)-(l-Met) that was followed by the replacement of a Cl- ligand and a subsequent, slower reduction to Au(I)-(l-Met). This is an intermolecular process, involving attack on the [AuCl4]- complex by an outer-sphere l-methionine. The activation parameters (ΔH≠ and ΔS≠) for substitution and reduction were determined. IR spectroscopy indicates that l-methionine acts as a bidentate ligand, most likely coordinating via the S and N atoms, while 1H and 13C NMR data indicate methionine sulfoxide as the final product. Finally, the components of the reaction were treated thermally in order to investigate the solid phase synthesis of the resulting complex.",
publisher = "Oxford : Pergamon-Elsevier Science Ltd",
journal = "Polyhedron",
title = "Mechanism of complex formation between [AuCl4]- and l-methionine",
volume = "28",
number = "3",
pages = "593-599",
doi = "10.1016/j.poly.2008.11.045"
}

Vujačić, A. V., Savić, J.Z., Sovilj, S. P., Mészáros, S. K., Todorović, N., Petković, M.Z.,& Vasić, V. M.. (2009). Mechanism of complex formation between [AuCl4]- and l-methionine. in Polyhedron
Oxford : Pergamon-Elsevier Science Ltd., 28(3), 593-599.
https://doi.org/10.1016/j.poly.2008.11.045

Vujačić AV, Savić J, Sovilj SP, Mészáros SK, Todorović N, Petković M, Vasić VM. Mechanism of complex formation between [AuCl4]- and l-methionine. in Polyhedron. 2009;28(3):593-599.
doi:10.1016/j.poly.2008.11.045 .

Vujačić, Ana V., Savić, J.Z., Sovilj, Sofija P., Mészáros, Szécsényi K., Todorović, Nina, Petković, M.Z., Vasić, Vesna M., "Mechanism of complex formation between [AuCl4]- and l-methionine" in Polyhedron, 28, no. 3 (2009):593-599,
https://doi.org/10.1016/j.poly.2008.11.045 . .