0 Introduction The rational design and synthesis of metal-directed supramolecular frameworks have received much attention in coordination chemistry because of their interesting molecular topologies and tremendous potential applications in host-guest
A metal-organic coordination polymer [Zn2(pzdc)(im)3]n(H2pzdc=pyrazine-2,3-dicarboxylic acid,im= imidazole) 1 has been hydrothermally synthesized and characterized by elemental analysis,IR,fluorescence spectrum and single-crystal X-ray diffraction.Pale yellow crystals crystallize in the monoclinic system,space group P21/c,a=1.364 87(15) nm,b=1.389 43(15) nm,c=0.956 89(10) nm,β=102.354(2)°,V=1.772 6(3) nm3,C15H12N8O4Zn2,Mr=499.07,Dc=1.870 g·cm-3,F(000)=1 000,Z=4,μ(Mo Kα)=2.750 mm-1,the final R=0.032 2 and wR=0.087 8 for 3 208 observed reflections(I>2σ(I)).1 shows green photoluminescent property at room temperature.
A new metal-organic complex Pb(cbba)2(phen)2 (1, H2cbba=2-(4′-chlorine-benzoyl)benzoic acid, phen= 1,10-phenanthroline) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, fluorescence spectrum and single-crystal X-ray diffraction. The compound crystallizes in orthorhombic, space group Pbcn with a=1.474 49(7) nm, b=0.953 90(4) nm, c=3.031 65(14) nm, V=4.264 1(3) nm3, C52H32Cl2N4O6Pb, Mr=1 086.91, Dc=1.693 g·cm-3, μ(Mo Kα)=4.141 mm-1, F(000)=2 144, Z=4, the final R=0.018 3 and wR=0.045 7 for 3 582 observed reflections (I>2σ(I)). In the crystal structure, the lead atom is six-coordinated with two carboxylate oxygen atoms from different cbba ligands and four nitrogen atoms from different phen ligands, showing a distorted octahedral geometry. Furthermore, 1 shows yellow photoluminescent property at room temperature.
