Crystal structure of dimethyl 2,5-bis-[(di-phen-oxy-phosphor-yl)-oxy]cyclo-hexa-1,4-diene-1,4-di-carboxyl-ate.

Abstract

In the title compound, C34H30O12P2, which was synthesized via the esterification of dimethyl 2,5-dioxo-1,4-cyclo­hexa­nedi­carboxyl­ate with diphenyl chloro­phosphate, the mol­ecule has crystallographic inversion symmetry. The dihedral angles between the plane of the cyclo­hexa-1,4-diene ring and those of the two benzene rings of the substituent phosphate groups are 41.0 (1) and 89.5 (1)°, while that with the ester group is 3.1 (3)°. In the crystal, only weak inter­molecular C—H⋯O hydrogen bonds are present.