Hydrothermal Synthesis and Crystal Structure of a Lead(Ⅱ) Polymer with a Two-dimensional Network Structure:[Pb_2(PDB)_2(phen)]_n·nH_2O |
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作者姓名: | LI Xiu-Mei WANG Qing-Wei LI Chuan-Bi WANG Zhi-Tao LIU Bo |
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作者单位: | LI Xiu-Mei,WANG Zhi-Tao(Department of Chemistry,Tonghua Teachers College,Tonghua,Jilin 134002,China);WANG Qing-Wei,LI Chuan-Bi,LIU Bo(Jilin Normal University,Siping,Jilin 136000,China) |
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基金项目: | Supported by the Science and Technology Research Projects of the Education Office of Jilin Province (No. 2007. 213) |
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摘 要: | 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.
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关 键 词: | 二维网状结构 铅(Ⅱ) phen 晶体结构 水热合成 高分子结构 议会 时区 |
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