摘要:
A new copper(II) complex [Cu(5-NO(2)-2-CH(3)CONHC(6)H(3)COO)(2)(H(2)O)(3)] center dot 2H(2)O was synthesized by the reaction of sodium 5-nitro-5-acetamidobenzoate with CuSO(4) center dot 5H(2)O (2 : 1), and its structure was determined by X-ray diffraction. Crystals are monoclinic: a = 11.7146(7) angstrom, b = 16.8463(10) angstrom, c = 13.2408(9) angstrom, beta = 113.896(5)degrees, Z = 4, rho(calc) = 1.668 g/cm(3), space group P2(1)/c, R = 0.0338. In the monomer complex, the copper atom has an elongated square-pyramidal coordination (4 + 1); the coordination sphere is formed by two oxygen atoms of the carboxylate groups of two monodentate organic ligands and the three oxygen atoms O(w) of the water molecules (the O(3w) atom is in the axial position). In the structure, the complex molecules are linked by hydrogen bonds involving two uncoordinated water molecules.