A discussion on the solid state organization of 4-pyridyl imino compounds and on the co-crystallization between their molecular precursors

The synthesis and the crystal structures of several 4-pyridyl imino compounds are reported. Their solid-state organization is based on head-to-tail chains sustained by O–H⋯N hydrogen bonds; the supramolecular arrangement is analysed by means of the Hirshfeld surfaces and of the corresponding 2D-fingerprint plots. The co-crystallization between 4-aminobenzyl alcohol and 4-acetylpyridine is analysed, correlating reactivity trends and structural characters. In this context, the single crystal X-ray diffraction analyses of 4-aminobenzyl alcohol and 3,5-diphenyl-4-hydroxyaniline are also reported.