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Abstract:
The asymmetric unit of the title compound, C18H 16Cl4N2O2, comprises half of a potentially tetradentate Schiff base ligand. It is located about a twofold rotation axis that bisects the central C - C bond of the butane-1,4-diamine group. There are two intramolecular O - H⋯N hydrogen bonds making S(6) ring motifs. In the crystal, molecules are linked by pairs of weak C - H⋯Cl interactions, forming inversion dimers, which are further connected by C - H⋯O hydrogen bonds into two-dimensional frameworks that lie parallel to (001)