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Synthesis and Molecular Structure of Calcium Difluoranthenide, [Ca(THF)6][C16H10]2·2C16H10

✍ Scribed by Igor L. Fedushkin; Anton N. Lukoyanov; Sebastian Dechert; Herbert Schumann

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
132 KB
Volume
2004
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

The treatment of CaI~2~(THF)~2~ with potassium and fluoranthene (mole ratio 1:2:2) in THF affords [Ca(THF)~6~][C~16~H~10~]~2~·2C~16~H~10~ (1). The X‐ray structure analysis of 1 shows that the compound consists of separate [Ca(THF)~6~]^2+^ cations, [C~16~H~10~]^·^^−^ radical anions and neutral fluoranthene molecules. The neutral and radical‐anionic fluoranthene species can be distinguished by the differences in the skeleton C−C bond lengths. The presence of fluoranthene radical anions in THF solutions of 1 is proved by ESR spectroscopy and is further supported by the ^1^H NMR spectrum of 1, which does not give any indication of radical coupling. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)

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