Qc. Yang et al., A 1 1 MOLECULAR-COMPLEX OF 1,5-DIPHENYL-BIURET AND PHENYL CARBAMIDONITRILE/, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 470-472
Crystals of the title compound, 1,5-diphenylbiuret-N-cyano-N'-phenylur
ea (1/1), C14H13N3O2.C8H7N3O, were obtained from both ethanol and ethy
l acetate solutions of phenyl carbamidonitrile. The structure of the c
omplex features pairs of diphenylbiuret and phenyl carbamidonitrile mo
lecules linked by hydrogen bonds. Excluding a tilted phenyl group, the
molecule of 1,5-diphenylbiuret has a large, approximately coplanar, f
ragment in which all C-N bonds are partial double bonds.