The title complex, [Cd(Pyphen)(1,4-BDC)(H_2O)]·0.5Pyphen (1) (Pyphen=pyrazino[2,3-f][1,10]phenanthr-oline and 1,4-H_2BDC=1,4-benzenedicarboxylic acid) has been obtained by using hydrothermal synthesis and characterized by elemental analysis, IR, fluorescence spectrum and single-crystal X-ray diffraction. It crystallizes in orthorhombic, space group Pbcn with a=2.489 2(5) nm, b=0.967 88(19) nm, c=2.057 0(4) nm, V=4.955 9(17) nm3, Z=8, CdC_29H_18N_6O_4, Mr=642.89, Dc=1.723 g·cm^(-3), F(000)=2 576, μ(Mo Kα)=0.937 mm^(-1), R=0.039 6 and wR=0.102 6. The compound 1 exhibits one-dimensional chain structures, which are further stacked through π-π interactions to form supramolecular layers. Solid-state luminescent spectrum of the complex 1 indicates intense fluorescent emission.
A coordination polymer,namely [Fe(DPPZ)(dipic)]n(1)(DPPZ =dipyrido [3,2-a:2',3'-c]phenazine and H2dipic=pyridine-2,6-dicarboxylic acid),has been obtained by using hydrothermal synthesis method.The crystal structure was determined by X-ray single crystal structure analysis with the following data:Monoclinic,P21/c,a= 0.794 95(16) nm,b=3.601 1(7) nm,c=0.734 32(15) nm,β=106.07(3)°,V=2.020 0(7) nm3,Z=4,Mr=503.25,Dc=1.655 g·cm-3,F(000)=1 024,μ(Mo Kα)=0.795 mm-1,R=0.038 5 and wR=0.081 0.Complex 1 has octahedral coordination geometry and forms 1D zigzag coordination chains that organize into an unusual 3D supramolecular motif through noncovalent bonds,such as π-π stacking interactions and C-H … O hydrogen bonds.The result of TG analysis indicates that the title complex is stable till 290 ℃.
