trans-1,2-Difluoro-3,4,5,6,7,8-hexaphenyltricyclo$[4.2.0.0^{2,5}]$octa-3,7-diene

Chopra, Deepak and Nagarajan, K and Roberts, JD and Row, Guru TN (2007) trans-1,2-Difluoro-3,4,5,6,7,8-hexaphenyltricyclo$[4.2.0.0^{2,5}]$octa-3,7-diene. In: Acta Crystallographica Section E Acta Crystallographica Section E Online, E63 . o4557-o4557.

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Abstract

In order to probe the possible mechanism of the rearrangement of trans-hexaphenyldifluorotricyclooctadiene (a dimer of fluorotriphenylcyclobutadiene) to pentaphenyldihydrodifluoropentalene via C—F bond migration, a high-temperature study of the title compound, $C_{44}H_{30}F_2$, was performed at 400 (2) K. In the title compound, there are three fused fourmembered rings with the resulting eight-membered tricyclooctadiene ring adopting a sofa conformation. The dihedral angles between the central four-membered ring and the two outer rings are 66.03 (2) and 65.39 $(2)^o$. The crystal structure contains centrosymmetric dimers formed by $C—H...\pi$ interactions.

Item Type:	Journal Article
Publication:	Acta Crystallographica Section E Acta Crystallographica Section E Online
Publisher:	International Union of Crystallography
Additional Information:	Copyright of this article belongs to International Union of Crystallography.
Keywords:	single-crystal;X-ray study
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	04 Jun 2008
Last Modified:	19 Sep 2010 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/14179

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