Synthesis and Crystal Structure of One-dimensional Cadmium(II) Coordination Polymer:Cd2(DTB)(Bpy)2(H2O)2n (DTB =1,4-Dinitro-2,3,5,6-tetracarboxylatebenzene Tetravalent Anion; Bpy = 2,2'-Bipyridyl)

摘要

A one-dimensional coordination polymer [Cd2(DTB)(Bpy)2(H2O)2]n was synthesized by the reaction of hydrate cadmium perchlorate with 1,4-dinitro-2,3,5,6-tetracarboxylatebenzenic acid, sodium hydroxide and 2,2'-bipyridyl in 50% methanol solution by using solvent-thermal method. The crystal belongs to the triclinic system, space group P1 with a = 8.137(3), b = 9.527(3), c = 10.737(4)A,α= 96.305(6),β= 102.996(5),γ= 101.511(6)0, Z = 1, C30H20Cd2N6O14, Mr = 913.32, Dc = 1.934 g/cm3, V = 784.2(5)A3, F(000) = 450 and μ= 1.440 mm-1. The structure was refined to R = 0.0497 and wR = 0.0955 for 1870 observed reflections (I> 2σ(I)). In the complex each DTB as a four-dentate ligand bridges four cadmium(II) ions to form a one-dimensional chain structure.