Hydrothermal Synthesis, Structure and Thermal Stability of a Copper Coordination Polymer Bridged by Pimelic Acid

A novel one-dimensional chain copper(Ⅱ) coordination polymer {[Cu(2,2'-bipy)(HPDA)](HPDA)(H_2O)}_n has been hydrothermally synthesized using pimelic acid,2,2'-bipyridine and copper perchlorate in the mixture of water and methanol. The crystal structure was determined as a monoclinic system,space group P2_(1/c),with α=1.01139(14),b=2.6898(4),c = 1.02105(14),β = 109.651(2)°,V= 2.6159(6) nm~3,Dc=1.412 g/cm~3,Z= 2,F(000)=1164,GOOF=1.044,R= 0.0570 and wR=0.1448. The copper ion is coordinated with two nitrogen atoms of one 2,2"-bipyridine molecule and three oxygen atoms from two heptane diacid molecules,forming a distorted square-pyramidal geometry. The result of TG analysis shows that the title complex is stable under 200.0℃.