Synthesis,Crystal Structure and Magnetic Properties of a 1—D Polymer,Cu（NITpPy）2（H2TCB）（H2O）·2H2O

摘要

A novel complex[Cu(NITpPy)2(H2TCB)(H2O)]·2H2O (NITpPy=2-(pyrid-4''''''''-yl)-4,4,5,5-tetramethyl-1,3-dioxoimidazo-line;H2TCB=1,5-dicarboxybenzene carboxylic-2,4-diacid)has been synthesized and characterized by X-ray crystallography analysis.The crystal sturcture consists of infinite chains of Cu(NITpPy)2(H2O)units linked by H2TCB ligands.The complex crystallizes in triclinic system with space group P1-.Crystal data:a=1.0594(2)nm,b=1.3830(3)nm,c=1.5551(3)nm,a=67.75(3)°，β=89.83(3)°，γ=70.54(3)°.The variable magnetic susceptibility studies lead to magnetic coupling constant values of J1=-11.18cm-1(Cu-Rad)and J2=-4.06cm-1(Cu-Cu).