Abstract
Three metal–organic frameworks, namely {[M3(μ 3-MID)2(H2O)6]·2H2O}n [H3MID = 2-(3-methoxyphenyl)-1H-imidazole-4,5-dicarboxylic acid (M = Zn (1) or Co (2)]) and [Cu2(HDMID)2(H2O)4]n (H3DMID = 2-(3,4-dimethoxyphenyl)-1H-imidazole-4,5-dicarboxylic acid) (3), have been solvothermally synthesized. The crystal structures of 1 and 3 were characterized by single-crystal X-ray diffraction. The structure of 2 is inferred from cell dimensions only and appears to be isomorphous with 1 based on the crystal data. Complexes 1 and 2 are formed via self-assembly of double chains, which are further connected by imidazole dicarboxylate ligands to give a 3D interpenetrated framework containing 1D hexagonal channels. Polymer 3 consists of a 3D supramolecular network of 1D corrugated chains interacting via face-to-face π···π stacking and H-bonds. The solid-state luminescence properties of these complexes have been investigated.
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