In the title compound, C(16)H(16)Cl(4)N(3)O(2)P, the phosphoryl and carbonyl groups are anti to each other. The dihedral angle between the benzene rings is 33.59 (16)°. In the crystal, adjacent mol-ecules are linked via N-H⋯O=P and N-H⋯O=C hydrogen bonds, into an extended chain running parallel to the a axis.
The P atom in the title compound, C(19)H(29)N(4)O(4)P, exhibits a tetra-hedral coordination and the phosphoryl and carbonyl groups are anti to each other. Adjacent mol-ecules are linked by N-H⋯O hydrogen bonds to form a layer motif.
The title compound, C(19)H(18)NO(3)P, was prepared by the reaction of diphenyl phospho-rochloridate and benzyl-amine. In the crystal structure, mol-ecules are linked via N-H⋯O=P hydrogen bonds into extended chains parallel to the c axis.