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Synthesis and Molecular Structure of Calcium Difluoranthenide, [Ca(THF) 6 ][C 16 H 10 ] 2 ·2C 16 H 10
Author(s) -
Fedushkin Igor L.,
Lukoyanov Anton N.,
Dechert Sebastian,
Schumann Herbert
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200300924
Subject(s) - fluoranthene , chemistry , molecule , nuclear magnetic resonance spectroscopy , potassium , radical ion , bond length , spectroscopy , crystallography , medicinal chemistry , stereochemistry , ion , photochemistry , organic chemistry , physics , quantum mechanics , anthracene
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)