Latest documents http://publikationen.ub.uni-frankfurt.de/index/index/ Mon, 09 Feb 2009 13:44:31 +0200 Mon, 09 Feb 2009 13:44:31 +0200 http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6871 The title compound, C14H14Si, crystallizes with two almost identical molecules (r.m.s. deviation = 0.080 Å for all non-H atoms) in the asymmetric unit. All atoms of the silafluorene moiety lie in a common plane (r.m.s. deviations = 0.049 and 0.035 Å for the two molecules in the asymmetric unit). The Si-Cmethyl bonds are significantly shorter [1.865 (4)-1.868 (4) Å] than the Si-Caromatic bonds [1.882 (3)-1.892 (3) Å]. Owing to strain in the five-membered ring, the endocyclic C-Si-C angles are reduced to 91.05 (14) and 91.21 (14)°. Key indicators: single-crystal X-ray study; T = 173 K; mean σ(C–C) = 0.005 A°; R factor = 0.061; wR factor = 0.157; data-to-parameter ratio = 16.3. Jan Mewes; Hans-Wolfram Lerner; Michael Bolte article http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6871 Wed, 02 Sep 2009 13:44:31 +0200