Permittivities of the solid sulphates of phenothiazinic and 10-[3-(4-methyl-1-piperazinyl)-propyl]-phenothiazinic radical cations

Add time:07/20/2019    Source:sciencedirect.com

The solid sulphates of phenothiazinic and 10-[3-(4-methyl-1-piperazinyl)propyl]-phenothiazinic radical cations were obtained by oxidation of phenothiazine and its corresponding N-substituted derivative with oxygen. The compositions, ESR spectra and permittivities of the compounds obtained have been measured. The values of static dielectric constants and ϵ∞ as well as the dipole relaxation times for both compounds investigated are presented.

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