Two 3D metal(II)–organic coordination polymers constructed by semi-rigid imidazolium carboxylate ligand: synthesis, crystal structure and property.

Two metal coordination polymers, namely {[Co(MIBA)2]·2H2O}n (SNUT-3) and {[Cu(MIBA)2]·2H2O}n (SNUT-4), where HMIBA = 4-(1H-2-methylimidazol-1-yl)benzoic acid, were prepared by hydrothermal methods. Single-crystal X-ray analysis revealed that the structure of SNUT-3 exhibits a 3D→3D fourfold interpenetrating structure with diamondoid frameworks, while SNUT-4 shows a 2D + 2D → 3D inclined polycatenation structure. The gas adsorption property of SNUT-3 and photocatalytic activity of SNUT-4 for the degradation of Rhodamine B has been explored. [ABSTRACT FROM AUTHOR]