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An Isolation and liquid phase EPR spectra of the cation radical salts of N ‐methyl and N ‐ethylphenothiazinium perchlorate
Author(s) -
Fujita Hideo,
Yamauchi Jun
Publication year - 1980
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570170539
Subject(s) - chemistry , nitromethane , perchlorate , trifluoroacetic acid , electron paramagnetic resonance , bromine , radical , sodium perchlorate , inorganic chemistry , medicinal chemistry , organic chemistry , ion , nuclear magnetic resonance , electrochemistry , physics , electrode
N ‐Methyl and N ‐ethylphenothiazines were oxidized with bromine and sodium perchlorate to give stable cation radical salts. Their well‐resolved epr spectra were obtained in nitromethane solution. In order to assign the hfs constants, the cation radicals of N ‐deuteriomethyl and N ‐deuterioethylphenothiazines were prepared with lead tetraacetate and trifluoroacetic acid in solutions.