Coordination Polymers Composed of Copper(II), Trimesic Acid, and Imidazole:  3D Architecture Stabilized by Hydrogen Bonding

Abstract

The coordination polymers {[Cu3(TMA)2(Im)6(H2O)]·7H2O}n (1) and {[Cu3(TMA)2(Me-Im)6(H2O)]·16H2O}n (2) were synthesized by combining copper sulfate, TMA, and either Im or Me-Im in water. Single-crystal X-ray diffraction studies revealed that both compounds are composed of 2D sheets of Cu2+ cations and TMA3- anions. Hydrogen bonding between sheets in 1 stabilizes its 3D structure, while 2 is destabilized because of the absence of intersheet hydrogen bonding.