( E )- N -Phenyl- N -(phenyl-carbamo-yl)-3-[prop-yl(tri-methyl-sil-yl)amino]-acryl-amide chloro-form hemisolvate.

The title compound, C 22 H 29 N 3 O 2 Si·0.5CHCl 3 , crystallizes in the the triclinic space group P with two host mol-ecules and one chloro-form mol-ecule in the asymmetric unit. The core of the mol-ecule consists of a urea unit bound to a 3-amino-acryloyl group. These units are almost planar in both mol-ecules [average deviation from plane of 0.05 (6) Å in mol-ecule A and 0.04 (5) Å in mol-ecule B ]. The main difference between mol-ecules A and B involves the dihedral angles of the phenyl groups. One phenyl ring makes dihedral angles of 71.14 (6)° (mol-ecule A ) and 82.81 (7)° (mol-ecule B ) with respect to the core (C 4 N 3 O 2 ) of the mol-ecule [14.56 (9)° (mol-ecule A ) and 5.7 (1)° (mol-ecule B ) for the other phenyl ring]. Another prominent feature is the intra-molecular N-H⋯O hydrogen bond present in both crystallographically independent mol-ecules.