5,5′-(1-Phenyl-ethane-1,1-di-yl)bis-(1H-pyrrole-2-carboxaldehyde)

摘要

In the title compound, C 18 H 16 N 2 O 2 , the dihedral angle between the pyrrole rings is 79.47?(9)°, with the N—H groups approximately orthogonal (H—N?N—H pseudo torsion angle = ?106°). In the crystal, N—H?O hydrogen bonds link the mol-ecules into [11 ] chains. A C—H?O inter-action is also observed.