Interaction of n-substituted phenothiazines with halogen-containing solvents

ESR spectroscopy was used to study the interaction of several N-substituted phenothiazines with halogencontaining solvents (CCl₄, CHCl₃, CH₂Br₂). The dissolution of phenothiazines in these solvents was found to be associated with an ESR signal indicating the presence of an oxidation-reduction reaction in which the halogen-containing compounds act as acceptors, and the phenothiazines act as electron donors. The HFS of the ESR spectra of the cation radicals obtained was studied.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 274–276, February, 1996.