Synthesis and crystal structures of metal complexes with 4,5-imidazole-dicarboxylate chelates:self-assembled structures via NH...O=C intermolecular hydrogen bonds

摘要

New metal complexes with two imidazole-carboxylate sets,[Zn(hmia)_2(H_2O)_2] (hmia = l-hydroxymethyl-4-imidazoleacetate) (1) and [M(Himdc)_2(H_2O)_2] (imdc = 4,5-imidazoledicarboxylate) (M = Zn (2),Co (3),Cu (4)),were synthesized and structurally characterized.For all metal complexes,coordination of the two N-O sets of chelating ligands and two water molecules produces a distorted (1-3) and an elongated (4) octahedral coordination center,in which these monomeric units are connected by various intermolecular hydrogen bonds.