Abstract
The asymmetric unit of the 1:4 title co-crystal of 2-amino-4-(4-chlorophenyl)-5,6-dihydrobenzo[h]quinoline-3-carbonitrile and 3-amino-1-(4-chlorophenyl)-9,10-dihydrophenanthrene-2,4-dicarbonitrile, 0.2C(20)H(14)ClN(3)center dot 0.8C(22)H(14)ClN(3), has the atoms of the fused-ring system and those of the amino, cyano and chlorophenyl substitutents overlapped. The fused-ring system is buckled owing to the ethylene linkage in the central ring. There are two independent overlapped molecules in the asymmetric unit. In one independent molecule, the two flanking aromatic rings are twisted by 24.4 (1)degrees and the ring of the chlorophenyl substituent is twisted by 87.3 (1)degrees relative to the amino- and cyano-bearing aromatic ring. In the second molecule, the respective dihedral angles are 26.1 (1) and 57.8 (1)degrees. The two independent molecules are linked by N-H center dot center dot center dot N hydrogen bonds into dimers.