Crystal structure of dimethyl 2,5-bis­[(di­phen­oxy­phosphor­yl)­oxy]cyclo­hexa-1,4-diene-1,4-di­carboxyl­ate

In the title compound, C(34)H(30)O(12)P(2), 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.