Abstract

A dicarboxylate ligand, 5-carboxyl-1-carboxymethyl-2-oxidopyridinium (H2L), was utilized to form four complexes with the general formula [M(HL)2(H2O)]·2H2O, M = CuII (1), ZnII (2), MnII (3), CdII (4). The crystals were isomorphous, belonging to the monoclinic C2/c space group. They were constructed from 1D chains and further linked by hydrogen bonds into a novel binodal (6,8)-connected 3D supramolecular network with twofold self-penetration. Photoluminescence studies revealed that complexes 2–4 displayed intense structure-related fluorescent emission bands.

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