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A new metal-organic complex [Pb2(PDB)2(phen)]n·nH2O (H2PDB=pyridine-3,4-dicarboxylic acid,phen=1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG and single-crystal X-ray diffraction.The compound crystallizes in triclinic,space group P1 with a=7.2472(5),b=10.6966(8),c=16.2376(12),α=98.2960(10),β=91.6430(10),γ=97.4810(10)o,V=1233.53(16)3,C26H16O9N4Pb2,Mr=942.81,Dc=2.538 g/cm3,μ(MoKα)=13.697 mm-1,F(000)=872,Z=2,the final R=0.0247 and wR=0.0654 for 3886 observed reflections (I > 2σ(I)).In the crystal structure,the Pb(1) atom is six-coordinated with four carboxylate oxygen atoms from three different PDB ligands and two nitrogen atoms from phen ligand,showing a distorted octahedral geometry;the Pb(2) atom is four-coordinated with four carboxylate oxygen atoms from four different PDB ligands,showing a distorted tetrahedral geometry.It exhibits a three-dimensional supramolecular network structure formed by hydrogen bonds and π-π interactions.
A new metal-organic complex [Pb2 (PDB) 2 (phen)] n · nH2O (H2PDB = pyridine-3,4- dicarboxylic acid, phen = 1,10-phenanthroline) 1 has been hydrothermally synthesized and structurally characterized by elemental analysis , IR spectrum, TG and single-crystal X-ray diffraction. The compound crystallizes in triclinic space group P1 with a = 7.2472 (5), b = 10.6966 (8), c = 16.2376 (9), β = 91.6430 (10), γ = 97.4810 (10) o, V = 1233.53 (16) 3, C26H16O9N4Pb2, Mr = 942.81, Dc = 2.538 g / cm3, μ (MoKα) = 13.697 mm-1, Pb (1) atom is six-coordinated with four (F) = 872, Z = 2, the final R = 0.0247 and wR = 0.0654 for 3886 observed reflections (I> 2σ carboxylate oxygen atoms from three different PDB ligands and two nitrogen atoms from phen ligand, showing a distorted octahedral geometry; the Pb (2) atom is four-coordinated with four carboxylate oxygen atoms from four different PDB ligands, showing a distorted tetrahedral geometry. It exhibits a three-dimensional supramolecular network structure formed b y hydrogen bonds and π-π interactions.