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Acta Cryst. (2014). C70, 202-206  [ doi:10.1107/S2053229613034232 ]

Photochemical dimerization of a fluorinated di­benzyl­ideneacetone in chloro­form solution

A. Schwarzer and E. Weber

Synopsis: (1E,4E)-1,5-Bis(2,6-di­fluoro­phen­yl)penta-1,4-dien-3-one dimerizes under sunlight in chloro­form solution to form the corresponding cyclo­butane derivative. The dimer shows the `truxillic acid'-type arrangement of crystallographic centres of inversion, with cell dimensions closely related to those of the monomer.

Formula: C17H10F4O and C34H20F8O2


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