N,N′-Bis(4-methyl­phen­yl)-N′′-(2,2,2-trichloro­acet­yl)phospho­ric triamide

The P atom in the title compound, C₁₆H₁₇Cl₃N₃O₂P, is bonded in a distorted tetra­hedral geometry with the phosphoryl and carbonyl groups anti with respect to one another. In the crystal, mol­ecules are linked through (N—H)₂...O(=P) and N—H...O(=C) hydrogen bonds into chains along [001]. The phosphoryl O atom acts as a double hydrogen-bond acceptor.

N,N-Dibenzyl-O,O'-dimethyl thio­phosphate

The P atom in the title compound, C₁₆H₂₀NO₂PS, is bonded in a distorted tetra­hedral P(S)(O)₂N environment with the bond angles at the P atom in the range 99.37 (7) to 115.68 (5)°. The angles at the amido N atom (with bond-angle sum of 357.8°) confirm its sp² character. The C-O-P bond angles are 119.78 (11) and 119.39 (12)°.

Diphenyl (isopropyl­amido)­phosphate

The P atom in the title compound, C₁₅H₁₈NO₃P, is in a distorted tetra­hedral P(O)(O)₂N environment; the bond angles at P are in the range 98.16 (6)–115.82 (6)°. In the crystal, adjacent mol­ecules are linked via N—H...O=P hydrogen bonds into a chain running parallel to the b axis. The methyl groups are disordered over two sets of sites in a 0.677 (14):0.323 (14) ratio. The crystal studied was a non-merohedral twin with a refined minor component of 22.31 (4)%.