SYNTHESES OF COBALT AND CADMIUM COORDINATION POLYMERS COMPOSED OF DICARBOXYLATE AND BIS(4-(1H-IMIDAZOL-1-YL)PHENYL)METHANONE LIGANDS

摘要

Two coordination polymers {[Co(L~1)3(H2O)2](fdc)(H2O)_(2.5)}n(1) and [Cd(L~1)(tpdc)(H2O)]n(2)(L~1 =bis(4-(1H-imidazol-1-yl)phenyl)methanone,H2fdc = furan-2,5-dicarboxylic acid,H2tpdc = thiophene-2,5-dicarboxylic acid) are synthesized and structurally characterized by IR,EA,and single crystal X-ray diffraction analyses.In 1,Col has a distorted octahedral geometry with two oxygen atoms of water molecules and four nitrogen atoms from four L~1 ligands to give a distorted octahedral coordination geometry.The [Co(L~1)2]2 units are bridged by L~2 ligands to form ID chains.In 2,Cdl is seven-coordinated by four О atoms from two tpdc~(2-) ligands,one О atom from a coordinated water molecule,and two N atoms from two distinct ~ ligands.Complex 2 possesses a 4-connected net topology with the point symbol {4~4·6~2}.