Bis{2,6-bis[(2-hydroxy-5-methylphenyl)iminomethyl]pyridine} monohydrate

The title compound, 2C(21)H(19)N(3)O(2)center dot H2O, was synthesized by a Schiff base condensation of 2,6-diformylpyridine with 2-amino-4-methylphenol in ethanol. In the crystal, two molecules of 2,6-bis[(2-hydroxy-5-methylphenyl)iminomethyl]pyridine dimerize via hydrogen bonding to a water molecule, which lies on a twofold axis. There are also intramolecular phenol-imine hydrogen bonds. The dimers are further linked via pi-pi (phenyl-pyridine) [centroid-centroid distance = 3.707 (2) angstrom] and pi-pi edge-to-edge [3.392 (2) angstrom] interactions. The dihedral angles between the central ring and the two pendant rings are 11.46 (8) and 2.06 (8)degrees while the pendant rings make a dihedral angle of 10.14 (8)degrees