2-cyanoimino-5,5-diphenyl-4-imidazolinon Monohydrate

The title compound has anticonvulsant properties. In crystals of C(16)H1(2)N(4)O.H2O, its molecular structure is similar to that of phenytoin, an antiepileptic drug. The phenyl-phenyl angle is 101.05 (6)degrees. The imidazolinone cycle is planar and contains the cyanoimino moiety. The cohesion of the crystal is the result of van der Waals interactions and of four hydrogen bonds, three of which involve the water molecule.