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. 2013 May 15;69(Pt 6):o890.
doi: 10.1107/S160053681301218X. Print 2013 Jun 1.

6,12-Bis[(tri-cyclo-hexyl-sil-yl)ethyn-yl]indeno-[1,2-b]fluorene

Bradley D Rose  1 , Lev N Zakharov, Michael M Haley
Affiliations

6,12-Bis[(tri-cyclo-hexyl-sil-yl)ethyn-yl]indeno-[1,2-b]fluorene

Bradley D Rose et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title compound, C60H76Si2, a formally anti-aromatic system containing 20-π electrons, contains a rare p-xylylene motif. This is displayed by the alternating short and long bonds. The outer rings possess nearly homogenous bond lengths. In the crystal, the molecules forms layers perpendicular to the c axis and within these layers there are two one-dimensional stacks with one stack that has a sp (2) carbon contact of 3.283 (6) Å, less than the sum of the van der Waals radii. The center of the mol-ecule sits on an inversion center.

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Figures

Fig. 1.
Fig. 1.
The crystal structure of the title compound. ellipsoids drawn with with 30% probability displacement ellipsoids and the atom-numbering scheme. [Symmetry code (A): 1 - x, -y, 2 - z].
Fig. 2.
Fig. 2.
View of molecular stacks of the title compound.
See this image and copyright information in PMC

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