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The cyclophane groups of the two title compounds, planar-chiral dimethylbis(tricyclo[8.2.2.24,7]tetradeca-4,6,10,12,13,15-hexaen-5-yl)silane, C34H36Si, and its meso analogue, display similar geometric features to the parent compound [2.2]paracyclophane and also to [2.2]paracyclophane units in other structures; the aromatic rings are distorted in the typical way. The para-C atoms are bent out of the plane of the other four approximately coplanar atoms into a boat conformation. The aromatic rings are twisted with respect to one another. The Csp3-Csp3 bond lengths of the methylene bridges are slightly longer than standard values in unstrained systems.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks parasil, deneb, global

fcf

Structure factor file (CIF format)
Contains datablock parasil

fcf

Structure factor file (CIF format)
Contains datablock deneb

CCDC references: 128634; 128635

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