Acta Cryst. (2009). E65, o517  [ doi:10.1107/S1600536809004632 ]

(S_P,S_P)-(-)-(E)-1,2-Bis(methylphenylphosphinoyl)ethene

H. Butenschön, N. Vinokurov, I. Baumgardt and K. M. Pietrusiewicz

Abstract: The title compound, C₁₆H₁₈O₂P₂, possesses two stereogenic P atoms and shows a distorted s-cis conformation of each O=P-C=C moiety. This has been suggested on the basis of the stereochemical result of 1,3-dipolar cycloadditions with nitrones and is now confirmed by the present crystal structure analysis. There are two crystallographically independent molecules in the asymmetric unit.

Online 13 February 2009

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