N-(4-Fluoro-benzo-yl)-N',N''-diisopropyl-phospho-ric triamide

The asymmetric unit of the title phospho-ric triamide, C13H21FN3O2P, consists of two independent mol-ecules. In each mol-ecule, the P=O group and the N-H unit belonging to the C(O)NHP(O) fragment are in a syn conformation with respect to each other. An intra-molecular N-H⋯O hydrogen bond occurs in each mol-ecule. The P atom adopts a distorted tetra-hedral environment. The methyl groups of an isopropyl fragment are disordered over two sets of sites with refined occupancies of 0.458 (5) and 0.542 (5). In the crystal, mol-ecules are linked through N-H⋯O(=P) and N-H⋯O(=C) hydrogen bonds into chains along [001].