2-Amino-4-(4-chloro­phen­yl)-5,6-dihydro­benzo[h]quinoline-3-carbonitrile–3-amino-1-(4-chloro­phen­yl)-9,10-dihydro­phenanthrene-2,4-dicarbonitrile (1/4)

The asymmetric unit of the 1:4 title co-crystal of 2-amino-4-(4-chloro-phen-yl)-5,6-dihydro-benzo[h]quinoline-3-carbonitrile and 3-amino-1-(4-chloro-phen-yl)-9,10-dihydro-phenanthrene-2,4-dicarbonitrile, 0.2C(20)H(14)ClN(3)·0.8C(22)H(14)ClN(3), has the atoms of the fused-ring system and those of the amino, cyano and chloro-phenyl substitutents overlapped. The fused-ring system is buckled owing to the ethyl-ene linkage in the central ring. There are two independent overlapped mol-ecules in the asymmetric unit. In one independent mol-ecule, the two flanking aromatic rings are twisted by 24.4 (1)° and the ring of the chloro-phenyl substituent is twisted by 87.3 (1)° relative to the amino- and cyano-bearing aromatic ring. In the second mol-ecule, the respective dihedral angles are 26.1 (1) and 57.8 (1)°. The two independent mol-ecules are linked by N-H⋯N hydrogen bonds into dimers.