Effect of complexation of cadmium ions with N-methylpyrrolidone on kinetics of their electroreduction in sulfate electrolyte

Autor:	E. I. Burdina, A. A. Bumber, L. M. Skibina, I. V. Dorogan
Rok vydání:	2013
Předmět:	chemistry.chemical_compound Hydrogen bond Chemistry Ligand Inorganic chemistry Electrochemistry Electrochemical kinetics Molecule Electrolyte Sulfate Dissociation (chemistry)
Zdroj:	Russian Journal of Electrochemistry. 49:124-130
ISSN:	1608-3342 1023-1935
DOI:	10.1134/s102319351302016x
Popis:	Calculation of coordination numbers showed that N-methylpyrrolidone (N-MP) forms stable 1: 4 metal-ligand complexes in sulfate cadmium-plating electrolytes. Methods of computer simulation and quantum-chemical calculations allowed establishing that thermodynamically stable Cd(II) complexes formed in the bulk of the sulfate electrolyte contain, apart from four N-MP molecules, four water molecules that provide additional stabilization of the complex due to formation of hydrogen bonds between the ligands. Electrochemical studies indicate the predominant participation of Cd(II) complexes in the electrode reaction. Their discharge is preceded by their slow dissociation. Hindrance of the process of Cd2+ ion electrore-duction from complex electrolytes results in improvement of the structure and quality of cathodic cadmium deposits.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::85d79dea0fe7c4c77855dc34138f7059 https://doi.org/10.1134/s102319351302016x Zobrazit plný text záznamu Full text from SpringerLink