Ethyl 1-phenyl-1,4-di-hydro-indeno-[1,2-c]pyrazole-3-carboxyl-ate

摘要

The non-H atoms of the title mol-ecule, C 19 H 16 N 2 O 2 , are almost coplanar (r.m.s. deviation = 0.019??), apart from the phenyl group, which is disordered with two components of almost equal occupancy: the dihedral angle between them is 78.9?(3)°. In the crystal, weak C—H?N hydrogen bonds link the mol-ecules into [001] chains and aromatic π – π stacking inter-actions [shortest centroid–centroid separation = 3.747?(2)??] form columns parallel to the c -axis direction.