K. Broka, J. Stradiņš, V. Glezer
Jun 1, 1993
Citations
2
Influential Citations
19
Citations
Journal
Journal of Electroanalytical Chemistry
Abstract
Cyclic voltammetry and voltammetry on a rotating ring-disc electrode have been used for the electrochemical study of silylated cyclic derivatives of triethanolamine—silatranes. Silatranes in acetonitrile on a glassy carbon electrode undergo electro-oxidation at high potentials. The process is diffusional and proceeds with one-electron transfer. Electro-oxidation is irreversible at scan rates below 100 mV s−1, partially reversible at higher scan rates (v = 200, 500 mV s−1) and reversible at low temperatures (T < - 10°C). The primary products of electro-oxidation are cation radicals of relatively low stability. The process is coupled with chemical reactions, which are retarded at low temperatures. The potentials of electro-oxidation are affected significantly by the electronic effects of substituents at the silicon atom. This leads to the conclusion that silatranes undergo electro-oxidation without preceding cleavage of donor-acceptor bonding N → Si.