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Synthesis, Structure and Thermal Behavior of a New Coordination Polymer Based on Mixed Pyrazine-2-carboxylate and Oxalate Ligands

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Abstract

A new 4d–4f coordination polymer, [AgGd(pyzc)2(ox)·H2O)] (1) [pyzc = Pyrazine-2-carboxylate, ox = oxalate] has been successfully synthesized under hydrothermal conditions and structurally determined by single-crystal X-ray diffraction, and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis and power X-ray diffraction. Single-crystal X-ray analysis reveals that it crystallizes in the monoclinic space group P2 1 /c with a = 10.0746(1) Å, b = 18.642(1) Å, c = 8.0525(2) Å, β = 112.470(1)°, Mr = 617.34, Z = 4, V = 1505.6(2) Å3, μ = 5.732, F(000) = 1164. The Gd(III) ion is nine-coordinated by two O-donors and two N-donors of two different chelating pyzc ligands, four O-donors of two different chelating oxalate ligands, and one O-donor of another carboxylate group of one pyzc ligand. The compound represents a 3D microporous polymeric network constructed by gadolinium–oxalate chains and Ag-pyzc subunits.

Graphical Abstract

The compound [AgGd(pyzc)2(ox)·H2O)] (1) Pyrazine-2-carboxylate (pyzc), oxalate (ox) exhibits a new 4d–4f three-dimensional (3D) heterometallic polymeric network that is assembled from the gadolinium–oxalate chains and Ag-pyzc subunits.

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Acknowledgments

This work was financially supported by Nature and Science Foundation of Guangdong Province (Grant no. 7005808) and NSFC (Grant no. U0734005).

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Authors and Affiliations

  1. School of Chemistry and Environment, South China Normal University, Guangzhou, 510006, People’s Republic of China

    Lu Han, Yan-Ru Ma, Lai-Chen Chen, Shu-Min Huo, Tao-Run Qiu, Rong-Hua Zeng, Qun-Hui Meng & Yi-Fan Luo

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  1. Lu Han
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  2. Yan-Ru Ma
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Correspondence to Yi-Fan Luo.

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Han, L., Ma, YR., Chen, LC. et al. Synthesis, Structure and Thermal Behavior of a New Coordination Polymer Based on Mixed Pyrazine-2-carboxylate and Oxalate Ligands. J Chem Crystallogr 41, 596–600 (2011). https://doi.org/10.1007/s10870-011-0002-1

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