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EPR Study of the Radical Ions of Aryl-Substituted Propellanes

✍ Scribed by Crockett, Rowena ;Gescheidt, Georg ;Dyker, Gerald ;Körning, Jutta

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Volume
1996
Category
Article
ISSN
0947-3440

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✦ Synopsis

Abstract

The radical anions and the radical cations of 1–3 in which three π systems are connected in three dimensions by a strained propellane spacer were studied by ESR/ENDOR/TRIPLE spectroscopy. The hyperfine data of acenaphthene (4) are compared with those of the fused π systems 5–10. In the relatively persistent radical anions of 1–3, the spin is mainly confined to the two naphthalene moieties. Whereas the radical cation of 2 resembles a naphthalene trimer, the radical cations of intact 1 and 3 cannot be detected. The ESR spectra recorded upon one‐electron oxidation of 1 and 3 are assigned to the radical cations of 9 and 10, respectively, formed by the loss of one naphthalene moiety from the parent molecules.

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