Synthesis, Crystal Structure and Thermal Stability of Coordination Polymer [Co2(HO-BDC)2(bpe)2(H2O)2]n·n(py)·nH2O with Nanoscale C

Chem. J. Chinese Universities

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Synthesis, Crystal Structure and Thermal Stability of Coordination Polymer [Co₂(HO-BDC)₂(bpe)₂(H₂O)₂]_n·n(py)·nH₂O with Nanoscale C

ZHUO Xin^1,2, PAN Zhao-Rui², WANG Zuo-Wei², LI Yi-Zhi², ZHENG He-Gen²*

1. Photoelectric Chemistry Laboratory, Suzhou College, Suzhou 234000, China;
2. Institute of Coordination Chemistry, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

Received:2006-11-13 Revised:1900-01-01 Online:2007-06-10 Published:2007-06-10
Contact: ZHENG He-Gen

Abstract

Abstract: A novel coordination ploymer [Co₂(HO-BDC)₂(bpe)₂(H₂O)₂]_n·n(py)·nH₂O[where HO-H₂BDC is 5-hydroxyisophthalic acid and bpe is 1,2-bis(4-pyridyl)ethane, py is pyridine] with nanoscale channels was synthesized and characterized via elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to triclinic crystal system, space group P1, with a=1.0245(3) nm, b=1.1467(3) nm, c=1.2430(4) nm, α=68.915(5)°, β=67.163(4)°, γ=71.373(4)°, V=1.2279(6) nm³, Z=1, M_r=979.70, D_c=1.325 Mg/m³, F(000)=506, μ=0.740 mm^-1, the final R₁=0.0515 and wR₂=0.1058 for 3625 observed reflections with I>2σ(I). The coordination polymer has a 2D rectangular grid framework parallel to the ac plane with a dimension of 1.025 nm×0.1354 nm via strong hydrogen-bonding interactions. TGA curves of the coordination polymer show three main weight losses in the range of 110—150 ℃, 200—300 ℃ and 320—450 ℃ corresponding to the removal of non-coordinatated water molecules, non-coordinatated py molecules and the water and bpe molecules attached to metal, respectively, and the final residue is identified to be Co₂O₃.

Key words: Co coordination polymer, 5-Hydroxyisophthalic acid, 1,2-Di(Pyridine)ethane, Crystal structure, Hydrogen bond

CLC Number:

O614

TrendMD:

ZHUO Xin^1,2, PAN Zhao-Rui², WANG Zuo-Wei², LI Yi-Zhi², ZHENG He-Gen²*. Synthesis, Crystal Structure and Thermal Stability of Coordination Polymer [Co₂(HO-BDC)₂(bpe)₂(H₂O)₂]_n·n(py)·nH₂O with Nanoscale C[J]. Chem. J. Chinese Universities, doi: .

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Synthesis, Crystal Structure and Thermal Stability of Coordination Polymer [Co₂(HO-BDC)₂(bpe)₂(H₂O)₂]_n·n(py)·nH₂O with Nanoscale C

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