Hydrothermal Synthesis and Structural Characterization of a One-Dimensional Coordination Polymer [Zn(Pydc)(Dppz)]fl (H2Pydc = 2,6-Pyridinedicarboxylic Acid, Dppz = Dipyrido[3,2-a:2'-c]Phenazine)

摘要

A new metal-organic coordination polymer [Zn(Pydc)(Dppz)]_n(I) (H2Pydc = 2,6-pyridinedi-carboxylic acid, Dppz = dipyrido[3,2-a:2',3'-c]phenazine) was hydrothermally synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction. The X-ray diffraction analysis reveals that I crystallizes in the monoclinic system, space group P2_1/c. The Pydc~(2-) ligands adopt 0,N,0'-tridentate chelating and monodentate bridging coordination mode to link two adjacent Zn~(2+) ions to form a one-dimensional (1D) zigzag chain. The adjacent chains are further linked through hydrogen bonds and π—π stacking interactions, forming a three-dimensional (3D) supramolecular framework. The unit cell parameters for I: a = 7.332(3) A, b = 36.023(9) A, c = 7.8838(13) A, β = 105.65(3)°, V= 2005.1(10) A~3, Z= 4.