Thermotropic mesomorphism in penta‐ and hepta‐coordinated metal complexes

Abstract

New Ni(II) and UO2(II) metallomesogens obtained from mesomorphic N,N′‐salicyliden(3,3′‐diamine‐N‐methyldipropylamine) ligands containing a pentadentate N3O2 chelating cavity and bearing two or four lateral substituents, are isolated and fully characterized. Some of the synthesized nickel and dioxouranium complexes show a SmC mesophase. To the best of our knowledge, these species are the first pentacoordinated Ni(II) and heptacoordinated UO2(II) metallomesogens to be reported.