Journal of the Chemical Society, Dalton Transactions p. 2509 - 2514 (1995)
Update date:2022-08-04
Topics:
Yan, Yaw-Kai
Mingos, D. Michael P.
Mueller, Thomas E.
Williams, David J.
Kurmoo, Mohamedally
The mixed-sandwich ferracarborane complex closo-<3-(η-C5Me5)Fe-4-Me2S-1,2-C2B9H10> has been synthesised and characterised by cyclic voltammetry, infrared, 1H and 11B NMR spectroscopy.This complex forms stable 1:1 charge-transfer salts with 2,3-dichloro-5,6-dicyano-p-benzoquinone (ddq) and 7,7,8,8-tetracyano-2,3,5,6-tetrafluoroquinodimethane.Both salts are paramagnetic between 5 and 300 K with Weiss constants of -0.9 and -0.7 K respectively.The organic radical anions do not contribute to the bulk magnetic susceptibilities of these salts.Single-crystal X-ray diffraction analysis of the ddq salt shows that the ddq(.1-) anions form isolated stacked dimers within which there is a short interplanar separation of 2.90 Angstroem.Short S...O contacts (3.15 Angstroem) occur between the
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