Syntheses, structures and luminescent properties of the metal complexes based on Zn(II) or Cd(II) with 5-nitro-8-hydroxyquinoline

Five new complexes of Cd(II) and Zn(II), [M(C9H5N2O3)2(CH3OH)2] (1, 2) and [M(C9H5N2O3)2(C2H8N2)] (3, 4) (M = Zn(II) and Cd(II)) and [Zn(C9H5N2O3)2(C10H8N2)] (5), have been prepared by the slowly release methods of 5-nitro-8-hydroxyquinoline from 5-nitro-quinoline-8-yl acetate and characterized by elemental analysis, IR, thermal gravimetric analysis, fluorescence measurement and single crystal X-ray diffraction analysis. All the complexes are mononuclear and show excellent luminescence properties in the solid state at room temperature.