Acta Cryst. (2002). E58, o726-o728  [ doi:10.1107/S1600536802009480 ]

[2.2]Basketenoparacyclophane 18,20-dicarbonitrile

P. G. Jones, B. Witulski and H. Hopf

Abstract: The title compound, C₂₂H₁₈N₂, displays some release of the usual strain in [2.2]paracyclophanes (e.g. the bridge bonds are no longer lengthened), associated with the lengthening of the bridgehead contact C3C14. However, the effect is not uniform; the basketene ring system introduces strain of its own (e.g. lengthened single bonds, wide angles at the corresponding bridge atoms).

Online 8 June 2002

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