Effect of complex formation on the effectiveness of benzhydrazides in the cadmium electrodeposition from perchlorate baths

Autor:	L. M. Skibina, R. R. Khalikov, V. V. Kuznetsov
Rok vydání:	2008
Předmět:	Ligand Organic Chemistry Inorganic chemistry Metals and Alloys Substituent Surfaces Coatings and Films Metal Perchlorate chemistry.chemical_compound Electron transfer Adsorption chemistry visual_art Materials Chemistry visual_art.visual_art_medium Molecule Surface layer
Zdroj:	Protection of Metals. 44:76-83
ISSN:	1608-327X 0033-1732
DOI:	10.1134/s0033173208010104
Popis:	It is shown that, depending on the nature of a substituent R in the molecule of addition agent, the electroactive species in the electron transfer may be either 2:1 metal-ligand complexes or more stable 1:1 ones. In the former case, the complexes formed in the surface layer blockade the electrode surface, increase Ψ′-potential and thus impede the metal ion discharge; their inhibitive action increases with an increase in the ligand concentration. In the latter case, the complex formation makes the adsorption film be more permeable and thus accelerates the electroreduction reaction. An increase in the addition agent concentration is accompanied with a decrease in its inhibiting effectiveness.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b2deca015289fccb619e1fe8da35cd70 https://doi.org/10.1134/s0033173208010104 Zobrazit plný text záznamu Plný text ve formátu PDF