Hydrothermal Synthesis,Crystal Structure and Fluorescence Property of New 3D Supramolecular Compound:[Cd_2(Dppz)_4(1,2-BDC)_2]·4H_2O

A supermolecular compound,[Cd2(Dppz)4(1,2-BDC)2]·4H2O was obtained from the hydrothermal reaction of cadium(Ⅱ) nitrate with mixed ligands [phthalic acid(1,2-H2BDC) and dipyrido[3,2-a: 2′,3′-c]-phenazine(Dppz)],and structurally characterized by single-crystal X-ray diffraction.Result reveals that the compound belongs to the monoclinic system with space group C2/c.The cell parameters are: a=2.496 17(10) nm,b=1.715 96(10) nm,c=1.822 32(8) nm,β=96.293(1)°,V =7.758 6(6) nm3,Z=4,R1=0.045 6,wR2=0.093 9.The result of fluorescence spectrum shows that the title compound exhibits blue emission in the solid state at room temperature.