Synthesis, crystal structure and Hirshfeld surface analysis of 5-[2-(di-cyano-methyl-idene)hydrazin-1-yl]-2,4,6-tri-iodo-isophthalic acid ethanol monosolvate.

The title compound, CHINO·CHO, crystallizes in the triclinic space group with one independent mol-ecule and one ethanol solvent mol-ecule in the asymmetric unit. The benzene ring and the methyl-carbonohydrazonoyl dicyanide group of the main mol-ecule makes a dihedral angle of 57.91 (16)°. In the crystal, O-H⋯O and N-H⋯O hydrogen bonds link pairs of mol-ecules, forming dimers with (14) motifs. These dimers are connected by O-H⋯O hydrogen bonds into chains along the axis direction, forming (16) ring motifs. Further O-H⋯O inter-actions involving the ethanol solvent mol-ecule connect the chains into a three-dimensional network. In addition, C-I⋯π inter-actions are observed. The inter-molecular inter-actions in the crystal structure were qu-anti-fied and analysed using Hirshfeld surface analysis.