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The first isolation of the hexafluoroantimonate salt of a 1,4-dithiin radical cation stabilized by bicyclo[2.2.2]octene annelation

✍ Scribed by Tohru Nishinaga; Atsushi Wakamiya; Koichi Komatsu

Book ID: 104261535
Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 189 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)00752-2

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✦ Synopsis

One-electron oxidation of 1,4-dithiin annelated with bicyclo[2.2.2]octene units (3) by SbF5 afforded stable radical cation salt 3'+SbF6 -. The X-ray crystallography indicated that the dithiin ring of 3 '+ is planar in agreement with the theoretical prediction. The ESR coupling constant (as) due to 33S in 3'+SbF6 -was found to be 0.86 mT, which was smaller than that for thianthrene radical cation 2 '+.

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