rac-Phenyl (benzylamido)(p-tolyl-amido)-phosphinate.

The title compound, C(20)H(21)N(2)O(2)P, was synthesized from (RS)-(C(6)H(5)O)P(O)Cl(NHC(6)H(4)-p-CH(3)) and benzyl-amine. The product crystallizes as a racemate in a polar space group. The phospho-rus atom has a distorted tetra-hedral configuration: the bond angles at the P atom are in the range 103.2 (1)-118.4 (1)°. The P-N(benzyl-amido) bond [1.615 (2) Å] is slightly shorter than the P-N(p-tolyl-amido) bond [1.630 (2) Å]. Both N-H groups adopt an anti orientation relative to the phosphoryl group. In the crystal, the adjacent mol-ecules are linked via N-H⋯O hydrogen bonds, forming R(2) (2)(8) rings, into a one-dimensional arrangement parallel to the x axis.