Crystal structure of N-isopropyl-N-(phen-yl)phenyl-glyoxyl-amide.

The title compound [systematic name: 2-oxo-N,2-diphenyl-N-(propan-2-yl)acetamide], C(17)H(17)NO(2), was synthesized and its photoreactive properties in the crystalline state were investigated. In the mol-ecule, the carbonyl group attached to the phenyl ring adopts an s-trans configuration with respect to the isopropyl group. Moreover, the distance between the C atom of the carbonyl group and the N-bound C atom of the isopropyl group is 3.845†(2)†à , which is much longer than 3.2†à , the threshold for photoreactions to take place in the mol-ecule. As a result, the crystal did not photoreact upon UV light irradiation. In the crystal, the mol-ecules are linked via weak inter-molecular C-H⋯O hydrogen bonds, forming a layer structure parallel to the ab plane.