Hydrothermal Synthesis, Structural Characterization and Fluorescent Property of Coordination Polymer {[Co2(HBTC)2(H2O)6]·C4H10N2·2H2O}n

Abstract

Abstract: The title complex {[Co₂(HBTC)₂(H₂O)₆]·C₄H₁₀N₂·2H₂O}_n(H₃BTC=1,3,5-benzene-tricarboxylic acid, C₄H₁₀N₂=piperazine) was hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis(MoKα). The crystal structure belongs to triclinic system, space group P1 {with } a=1.054 37(9) nm, {b=1.054 85(9) nm}, {c=0.714 82(5) nm}, {α=102.462 3(28)°}, {β=}{91.350 0(42)°}, γ= 111.018 6(29)°, V=0.720 18(10) nm³, M r=764.37, D_c=1.762 g/cm³, Z=1, {μ=}1.25 mm^-1, F(000)=394. A total of 6 681 reflections were collected, of which 3 247 were unique. The structure was refined to R=0.030 7 and wR=0.081 5 for 2 673 observed reflections with I>2σ(I). The crystal structure consists of cobalt(Ⅱ)carboxylate of BTC, coordination water molecules and discrete piperazine and water molecules. Extension of the coordination geometry around two cobalt atoms(Co1 and Co2) and two HBTC ligands generates an infinite 1D coordination polymer chain. These coordination polymer chains are further interdigitated by two different intermolecular hydrogen bonds( O-H...O and N-H...O) to afford a 3D extended metal-organic networks with a channel dimension of ca. 0.71 nm×0.82 nm. The complex gives a strong fluorescent emission band at 329 nm(λ_ex=312 nm) in the solid state at room temperature.

Key words: Hydrothermal synthesis, Coordination polymer, Hydrogen bond, 1,3,5-Benzenetricarboxylic acid, Cobalt complex

CLC Number:

O614

TrendMD:

CHEN Jian-Xin, LIU Shi-Xiong. Hydrothermal Synthesis, Structural Characterization and Fluorescent Property of Coordination Polymer {[Co₂(HBTC)₂(H₂O)₆]·C₄H₁₀N₂·2H₂O}_n[J]. Chem. J. Chinese Universities, 2004, 25(7): 1189.

References

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Hydrothermal Synthesis, Structural Characterization and Fluorescent Property of Coordination Polymer {[Co₂(HBTC)₂(H₂O)₆]·C₄H₁₀N₂·2H₂O}_n

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