Abstract:

Adding 4,4′-(phenylazanediyl)dibenzoic acid (H₂L) ligand and cadmium(Ⅱ) ions to 1,4-bis-(imidazol-1-yl)benzene (bimb) and 1,4-bis(pyridine-4-ylmethoxy)benzene (bpmb), we synthesized two new types of metal cadmium organicinorganic coordination polymers {［CdL(bimb)_0.5］·2H₂O}_n(1) and ［Cd(HL)2(bpmb)_0.5］_n(2) under the hydrothermal conditions. We determined the structure of the two polymers by means of XRD, and characterized their structures with the help of elemental analysis, IR spectroscopy, TG and powder Xray diffraction(PXRD). The fluorescence properties of two kinds of coordination polymers were tested at room temperature. The experimental results show that coordination polymer 1 crystallizes in the triclinic space group P1, and its framework is a twodimensional layered structure. Coordination polymer 2 crystallizes in the monoclinic space group C2/c, and it’s a threedimensional supramolecular polymer formed by the Hbond of onedimensional zigzag chains.

Key words: 4,4′-(phenylazanediyl)dibenzoic acid, 1,4-bis(imidazol-1-yl)benzene, 1,4-bis(pyridine-4-ylmethoxy)benzene, metalorganic framework