SYNTHESIS AND PROPERTIES OF PHENOTHIAZINE DERIVATIVES. 2. SPECTRAL (ESR AND IR) CHARACTERISTICS OF THE RADICAL-CATIONS OF THE PHENOTHIAZINE N-DERIVATIVES

Authors

  • О. Б. Томилин Mordovian State University
  • А. Н. Щеголихин Institute of Biochemical Physics
  • Э. П. Санаева Mordovian State University
  • А. Н. Клякин Mordovian State University
  • Л. В. Рябкина Mordovian State University
  • Е. П. Коновалова Mordovian State University

DOI:

https://doi.org/10.1007/321

Keywords:

phenothiazine, radical-cation, IR spectroscopy, ESR spectroscopy

Abstract

The temperature dependence of the ESR spectra of the radical-cations of the N-derivatives of phenothiazine were studied in the range of 200-393 K (o-xylene). It was established that at temperatures of 323-333 K the nature of the HFS varies from doublet to quartet with approximate intensity ratios of 1:2:2:1, and this transformation is irreversible. A hypothesis explaining the results is proposed. IR spectroscopy was used to confirm the proposed mechanism of localization of the unpaired electron.

Authors: O. B. Tomilin, A. N. Shchegolikhin, E. P. Sanaeva, A. N. Klyakin, L. B. Ryabkina, and E. P. Konovalova.

English Translation in Chemistry of Heterocyclic Compounds, 2000, 36 (9), pp 1097-1102

http://link.springer.com/article/10.1023/A%3A1002746301863

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Published

2013-02-15

Issue

No. 9 (2000)

Section

Original Papers