Acta Crystallogr Sect E Struct Rep Online. 2013 May 15;69(Pt 6):o890. doi: 10.1107/S160053681301218X. Print 2013 Jun 1.


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.