Synthesis and Characterization of (4,4’-H2bipy)[CdI4]• H2O with Strong Fluorescence

(4,4’-H2bipy)[CdI4]•H2O (1) has been synthesized via hydrothermal reaction and characterized by single crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/c with a = 8.3935(6), b = 24.304(2), c = 9.9388(7) A, Beta= 106.230(1)°, C10H12CdI4N2O, Mr = 796.22, V = 1946.6(2) A3, Z = 4, Dc = 2.717 g/cm3, S = 1.080, μ(MoK alfa) = 7.458 mm–1, F(000) = 1416, R = 0.0439 and wR = 0.1455. The crystal structure analysis of 1 reveals that the title compound features an isolated structure, based on discrete 4,4’-H2bipy moieties, lattice water molecules and tetrahedral cadmium atoms terminally coordinated by four iodine atoms. The 4,4’-H2bipy moieties and lattice water molecules are linked via hydrogen bonds. Luminescent investigation reveals a strong emission in blue region, which may be originating from p→p* charge-transfer interaction of the 4,4-H2bipy.