TY - JOUR

T1 - On Gold(I) Thiomalate Complexes in Aqueous Solution

AU - Mironov, I. V.

AU - Kharlamova, V. Yu

PY - 2018/7/1

Y1 - 2018/7/1

N2 - Certain equilibria involving polymeric gold(I) thiomalate complexes have been studied by spectrophotometry and pH measurements in aqueous solution at 25°С and I = 0.2 M (NaCl). Thiomalate protonation constants Hi–1Tm3– + H+ = HiTmi–3 have been found to be logKH1 = 10.23, logKH2 = 4.51, logKH3 = 3.01. Efficient functions have been used to allow for multiple protonation of polymeric complexes Aun Tmm n-3 m Equilibrium constants for reactions Au4Tm4 8− + Tm3– = Au4Tm5 11− (logK45 = 10.1 ± 0.5) and 0.25 Au4Tm4 8− + Tm3– = AuTm2 5− (logK12 = 4.9 ± 0.2) have been determined. Standard potential for AuTm2 5− has been found to be equal to E1/0 0 =–0.260 ± 0.025 V.

AB - Certain equilibria involving polymeric gold(I) thiomalate complexes have been studied by spectrophotometry and pH measurements in aqueous solution at 25°С and I = 0.2 M (NaCl). Thiomalate protonation constants Hi–1Tm3– + H+ = HiTmi–3 have been found to be logKH1 = 10.23, logKH2 = 4.51, logKH3 = 3.01. Efficient functions have been used to allow for multiple protonation of polymeric complexes Aun Tmm n-3 m Equilibrium constants for reactions Au4Tm4 8− + Tm3– = Au4Tm5 11− (logK45 = 10.1 ± 0.5) and 0.25 Au4Tm4 8− + Tm3– = AuTm2 5− (logK12 = 4.9 ± 0.2) have been determined. Standard potential for AuTm2 5− has been found to be equal to E1/0 0 =–0.260 ± 0.025 V.

KW - THIOUREA

KW - DRUG

UR - http://www.scopus.com/inward/record.url?scp=85051803030&partnerID=8YFLogxK

U2 - 10.1134/S0036023618070173

DO - 10.1134/S0036023618070173

M3 - Article

AN - SCOPUS:85051803030

VL - 63

SP - 978

EP - 982

JO - Russian Journal of Inorganic Chemistry

JF - Russian Journal of Inorganic Chemistry

SN - 0036-0236

IS - 7

ER -