Quantum-chemical investigation into the effects of hydration of dicyanoaurates in alkali media

Autor: V. V. Elshin, A. E. Ovsyukov, V. A. Shagun
Rok vydání: 2013
Předmět:
Zdroj: Russian Journal of Non-Ferrous Metals. 54:292-296
ISSN: 1934-970X
1067-8212
DOI: 10.3103/s1067821213040056
Popis: The dynamics of varying the equilibrium in the exchange reaction with potassium hydroxide, which leads to a bimolecular complex of hydroxy cyanoaurate with potassium cyanide, is investigated in the context of the DFT(B3LYP/LANL2DZ) quantum-chemical approach. The investigation is performed for gas-phase and polyhydrated states with a variable (n) number of water molecules in the near-sphere surrounding. The equilibrium in the gas-phase and hydrated (n ≤ 3) states is completely shifted towards dicyanoaurate. The further increase in the number of water molecules (n > 3) in the solvate surrounding of the bimolecular system leads to a shift in the equilibrium towards the formation of hydroxy cyanoaurate.
Databáze: OpenAIRE