Synthesis, structure and gas adsorption properties of coordination polymers based on mixed imidazole-containing ligands and carboxylate ligands

Abstract

Herein, we report the synthesis of two novel coordination polymers using a combination of imidazole-containing ligands, namely 1,3,5-tris((1H-imidazol-1-yl)methyl)benzene (L1) and 3,3′,5,5′-tetra(1H-imidazol-1-yl)-1,1′-biphenyl (L2) and a carboxylate ligand derived from 4,4′-biphenyldicarboxylic acid (H2BPDC). The structures of the two coordination polymers [Ni(L1)(BPDC)]·2H2O (1·2H2O), which exhibits a 2-fold interpenetrated 3D → 3D architecture, and {[Co(CH3OH)2(L2)0.5(BPDC)] (2) possessing a 2D framework, have been determined. Moreover, the gas adsorption properties of 1 and 2 have been investigated.