Acta Cryst. (2009). E65, o343  [ doi:10.1107/S1600536809001469 ]

2-Benzoyl-1,1-diethyl-3-phenylguanidine

G. Murtaza, Hanif-Ur-Rehman, M. Khawar Rauf, M. Ebihara and A. Badshah

Abstract: In the title tetrasubstituted guanidine, C₁₈H₂₁N₃O, the guanidine and carbonyl groups are not coplanar, as reflected by the torsion angles involving the N=C atoms [17.6 (3), -141.68 (17) and 42.2 (3)°]. This is probably due to the absence of an intramolecular N-HO hydrogen bond, forming a six-membered ring, and is commonly observed in this class of compounds. In the crystal structure, centrosymmetric dimers are formed via pairs of intermolecular N-HO hydrogen bonds. The dihedral angles between the guanidine plane and the phenyl ring and benzoyl plane are38.06 (9) and 41.54 (7)°, respectively.

Online 17 January 2009

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