One Trinuclear Copper(II) Polymer Based on Pyridine-2,4,6-Tricarboxylic Acid: Synthesis,Structure, and Magnetic Analysis |
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| Authors: | B. L. Liao S. X. Li Y. J. Yin |
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| Affiliation: | 1.College of Chemistry and Biological Engineering,Hechi University,Yizhou,P.R. China;2.School of Environment and Energy,South China University of Technology,Guangzhou,P.R. China |
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| Abstract: | The reaction of CuCl2 · 2H2O with pyridine-2,4,6-tricarboxylic acid (H3Pyta) in ethanol and water under hydrothermal synthesis conditions leads to the formation of a trinuclear copper polymer {[Cu3(Pyta3–)2(H2O)8] · 4H2O}n (I) (C16H28N2O24Cu3, Mr = 823.05, ρcalcd = 1.955 g cm–3). The polymer was characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis, and X-ray single-crystal diffraction (СIF file CCDC no. 1525203). The result showed that I belongs to the monoclinic system, P21/c space group. TGA curve shows that polymer I first removes water molecules, and then the ligand split for polymer I, and the remained residue is CuO. The magnetic measurement reveals the pyridine-2,4,6-tricarboxylic acid as bridge ligand can mediate the antiferromagnetic coupling interaction between magnetic centers. |
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