Electrooxidation of Hypercoordinated Derivatives of Silicon and Reactivity of Their Electrogenerated Cation Radicals: 1-Substituted Silatranes

Autor:	Vitalijs Romanovs, Elena F. Belogolova, Evgeniya P. Doronina, Valery F. Sidorkin, Viatcheslav V. Jouikov
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	silatranes cation radicals hypercoordination electrochemistry EPR spectroscopy Organic chemistry QD241-441
Zdroj:	Molecules, Vol 28, Iss 14, p 5561 (2023)
Druh dokumentu:	article
ISSN:	1420-3049
DOI:	10.3390/molecules28145561
Popis:	Electrochemical oxidation of 1-R-substituted silatranes 1 (R = Me, vinyl, (CH2)2CN, CH2Ph, CH2(C10H7), Ph, C6H4Me, p-Cl-C6H4, Cl)—classical representatives of pentacoordinated silicon compounds—and the formation of their short living cation radicals upon reversible or quasi-reversible one-electron withdrawal were studied by means of cyclic and square-wave voltammetry, faradaic impedance spectroscopy and real-time temperature-dependent EPR spectroelectrochemistry supported by DFT B3PW91/6-311++G(d,p) (C-PCM, acetonitrile) calculations. The main reaction responsible for the decay of 1+• is shown to be their deprotonation, and ways of increasing the stability of these species are proposed.
Databáze:	Directory of Open Access Journals
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