A robust Ti(iv)-based mesogen constructed around a TiO4N2 core

Abstract

Stable complexes [Ti(1a)(2)₂] and [Ti(1b)(2)₂], where 2 is the 6,6′-diphenyl-2,2′-biphenolato ligand and 1a and 1b ligands are 2,2′-bipyrimidine derivatives, are synthesized. The complex [Ti(1b)(2)₂] containing a diimine ligand substituted with long alkyl chains (C₁₆) exhibits a liquid crystal behaviour. This property and self-assembling in the crystalline state are explained by the particular molecular conformation of the complexes.