One Dimensional Coordination Polymer Constructed by 1,2‐Bis(4‐pyridinecarboxamido) ethane and Copper (II)

The ligand[1,2-bis(4-pyridinecarboxamido)ethane](L) and the coordimation polymer{[Cu(L)2(H2O)]·(NO3)2·6H2O}n(1) have been synthesized and characterized by IR and ^1H NMR spectra.Their molecular structures and the packing of 1 have been determined by single-crystal X-ray diffraction analysis.The Cu(Ⅱ）in 1 is gridged by two ligands forming an infinited one-dimensional chain like sturcture and L in 1 adopts a different one dimensional chain like structure and L in 1 adopts a different conformation from its free state.1 belongs to monoclinic,space group P21/n,a=1.2896(3)nm,b=1.2552(8)nm,c=2.2903(19)nm,β=93.04(5)°，Z=4，V=3.702(4)nm^32，The TG and DTG experiments showed that the uncoordinated H2O can be removed at low temperature by heating,and it does not decompose until 250℃.