On Polymeric Complexes of Gold(I) with Glutathione in Aqueous Solutions

On Polymeric Complexes of Gold(I) with Glutathione in Aqueous Solutions Full article

Journal

Russian Journal of Inorganic Chemistry
ISSN: 0036-0236 , E-ISSN: 1531-8613

Output data

Year: 2024, Volume: 69, Pages: 1567–1574 Pages count : 8 DOI: 10.1134/S0036023624601247

Tags

gold(I) compounds, thiols, polynuclear complexes

Authors

Mironov I.V. ¹ , Kharlamova V.Yu. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry

The study addresses reactions involving gold(I) glutathione complexes in aqueous solutions at t = 25°C and I = 0.2 M (NaCl) in the pH range of 7.20–6.06 (CAu = (5–10 × 10–4 M)). Using mass spectrometry, it was shown that at CGS > CAu, polymeric species Au4(GS)4* and Aun(GS)n+1* , where n ≤ 4, can exist, together with monomeric Au(GS)2*(the symbol * means the sum of species with different degrees of protonation). According to UV spectroscopy data, in the range of 0.5 < CGS/CAu < 3, all spectra can be described, within the experimental error, as linear combinations of the spectra of four species, including Au(GS)2*. The proportion of decreases with decreasing pH. The equilibrium constant for 0.25 Au4(GSH)44– + GSH2– = Au(GSH)23– + H+ amounts to logK = –4.4 ± 0.1 (I = 0.2 M, NaCl).

Mironov I.V. , Kharlamova V.Y.
On Polymeric Complexes of Gold(I) with Glutathione in Aqueous Solutions
Russian Journal of Inorganic Chemistry. 2024. V.69. P.1567–1574. DOI: 10.1134/S0036023624601247 WOS OpenAlex

Миронов И. , Харламова В.
О ПОЛИМЕРНЫХ КОМПЛЕКСАХ ЗОЛОТА(I) С ГЛУТАТИОНОМ В ВОДНОМ РАСТВОРЕ
Журнал неорганической химии. 2024. Т.69. №10. С.1449–1458. DOI: 10.31857/S0044457X24100117

Submitted:	Apr 11, 2024
Accepted:	May 31, 2024
Published print:	Oct 29, 2024

Web of science:	WOS:001345688500005
OpenAlex:	W4403851406

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