Premium
An ESR study of the cation radicals of azodibenzothiazolyls
Author(s) -
Okada Keiichi,
Yamauchi Jun,
Deguchi Yasuo
Publication year - 1983
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.5570200343
Subject(s) - chemistry , unpaired electron , moiety , tetrafluoride , radical , boron , ion , nitrogen , electron paramagnetic resonance , inorganic chemistry , organic chemistry , analytical chemistry (journal) , nuclear magnetic resonance , physics
Methyl and ethyl derivatives of thiobenzothiazole and their quaternary salts were prepared by the sealed glass tube method. Azinodibenzothiazoles were oxidized by lead(IV) acetate, giving cation radical salts with the boron tetrafluoride anion moiety. The well‐resolved esr spectra observed were analyzed by comparing the data with those of a deuteriomethylated radical and with those from the MO calculations. Spin density distribution was consistently determined by computer simulation, including almost the same unpaired electron distribution on the four nitrogen atoms.