Synthesis,Crystal Structure and Photoluminescence of a One-dimensional Zinc(Ⅱ)Coordination Polymer with Substituted Terpyridine

The title compound,[Zn(4-pytpy)(NO3)2](4-pytpy=4’-(4-pyridyl)-2,2’:6’,2"- terpyridine)1,has been synthesized by the solvothermal reaction of Zn(NO3)2·6H2O with 4-pytpy in CH3OH solution.It crystallizes in the triclinic system,space group P1~-with a=8.358(6),b= 11.121(8),c=11.374(8)(?),α=74.226(11),β=74.532(11),γ=83.085(12)°,Mr=499.74,V= 979.3(12)(?)~3,Z=2,Dc=1.695 g/cm~3,F(000)=508,μ=1.309 mm-1,the final R=0.0547 and wR= 0.1588.X-ray crystal structure analysis revealed that the Zn~Ⅱis hexa-coordinated by two oxygen atoms from two nitrate groups and four nitrogen atoms,three of which are from the tridentate domain of one 4-pytpy and the other from the monodentate domain of another 4-pytpy.4-pytpy as a bridging ligand connects Zn~Ⅱinto a one-dimensional coordination polymer.