Zinc and Cadmium Coordination Polymers Based on 3-(Carboxymethoxy)benzene-1, 2-dioic Acid and N-donor Ancillary Ligands: Syntheses, Crystal Structures, and Luminescent Properties

Two coordination polymers, {[Zn-7(L)(4)(bpe)(2)(mu(3)-OH)(2)(H2O)(8)]center dot 4H(2)O}(n) (1), and {[Cd-3(L)(2)(bPY)(2.5)(H2O)]center dot 5.5H(2)O}(n) (2) (H3L=3-(carboxymethoxy)benzene-1,2-dioic acid, bpe=1,2-bis(4-pyridyl)-ethene, and bpy=4,4'-bipyridine), have been synthesized under hydrothermal condition. Both complexes were characterized by elemental analysis, IR spectra, thermogravimetric analysis (TGA), and single-crystal X-ray crystallography. Complex 1 features a three-dimensional supramolecular architecture linked through hydrogen bonding interactions in which the secondary building unit (SBU) is [Zn-5(mu(3)-OH)(2)] cluster. Complex 2 features three-dimensional metal-organic framework with (3,3,6)-connected topology. The luminescence behaviors of 1 and 2 were also discussed. CCDC: 965303, 1; 965304, 2.