N,N'-Dibenzyl-N''-(2,6-difluoro-benzo-yl)-N,N'-dimethyl-phospho-ric triamide

The phosphoryl and carbonyl groups in the title compound, C(23)H(24)F(2)N(3)O(2)P, are anti to each other. The P atom is in a tetra-hedral coordination environment and the environment of each N atom is essentially planar, the average bond angles at the two N atoms being 119.9 and 119.1°. The H atom of the C(=O)NHP(=O) group is involved in an inter-molecular -P=O⋯H-N- hydrogen bond, forming centrosymmetric dimers.