CER - Central Repository
Institute of Chemistry, Technology and Metallurgy
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
  •   CER
  • IHTM
  • Radovi istraživača / Researchers' publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Mechanism of complex formation between [AuCl4]- and l-methionine

Authorized Users Only
2009
Authors
Vujačić, Ana V.
Savić, J.Z.
Sovilj, Sofija P.
Mészáros, Szécsényi K.
Todorović, Nina
Petković, M.Z.
Vasić, Vesna M.
Article (Published version)
Metadata
Show full item record
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.
Keywords:
Complex formation / Gold(III) / Kinetics / l-Methionine
Source:
Polyhedron, 2009, 28, 3, 593-599
Publisher:
  • Oxford : Pergamon-Elsevier Science Ltd
Funding / projects:
  • Istraživanje mehanizma interakcija biološki aktivnih jedinjenja sa biomolekulima (RS-142051)

DOI: 10.1016/j.poly.2008.11.045

ISSN: 0277-5387

WoS: 000264236000027

Scopus: 2-s2.0-59649108170
[ Google Scholar ]
40
39
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/601
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
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 . .

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB
 

 

All of DSpaceInstitutions/communitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About CeR – Central Repository | Send Feedback

re3dataOpenAIRERCUB