Acta Cryst. (2006). E62, o1951-o1953  [ doi:10.1107/S1600536806012980 ]

A photodimer of a 4-phenyl-4H-pyran

H. Yan, H.-Q. Wang, C.-L. Ni and X.-Q. Song

Abstract: A new cage photodimer, tetraethyl 2,4,8,10-tetramethyl-6,12-diphenyl-3,9-dioxapentacyclo[6.4.0.0^2,7.0^4,11.0^5,10]dodecane-1,5,7,11-tetracarboxylate, C₃₈H₄₄O₁₀, was prepared through [2+2]-photocycloaddition of diethyl 2,6-dimethyl-4-phenyl-4H-pyran-3,5-dicarboxylate in the solid state. The molecular structure was elucidated by X-ray diffraction analysis, ¹H NMR, IR and mass spectroscopy, and elemental analysis. The molecule possesses a crystallographically imposed centre of symmetry. The crystal structure is stabilized by weak C-HO hydrogen-bond interactions.

Online 21 April 2006

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