Synthesis, Crystal Structure and Magnetic Properties of a 1-D Polymer, [Cu(NITpPy)₂(H₂TCB)(H₂0)]·2H₂O

A novel complex [Cu(NnpPy)₂(H_lTCB)(H₁O)]·2H₂O (NITpPy = 2-(pyrid-4′-yl)-4,4,5,5-tetramethyl-1, 3-dioxoimidazoline; H₂TCB = 1, 5-dicarboxybenzene carboxylic-2, 4-diacid) has been synthesized and characterized by X-ray crystallography analysis. The crystal structure consists of infinite chains of Cu-(NITpPy)₂(H₂O) units linked by H₂TCB ligands. The complex crystallizes in triclinic system with space group PI. 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= −11.18 cm-¹ (Cu—Rad) and J₂ = −4.06 cm⁻¹ (Cu—Cu).