文献类型：期刊文献

英文题名：Synthesis, characterization and thermal decomposition of Sb III-M-SbIII type trinuclear complexes of ethylenediamine-N, N, N', N'-tetraacetate (M:Co(II), La(III), Nd(III), Dy(III))

作者：Zhong, G.Q.[1]; Shen, J.[1]; Jiang, Q.Y.[1]; Jia, Y.Q.[2]; Chen, M.J.[1]; Zhang, Z.P.[1]

机构：[1] Department of Chemistry, Southwest University of Science and Technology, Mianyang 621010, China; [2] Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China

年份：2008

卷号：92

期号：2

起止页码：607

外文期刊名：Journal of Thermal Analysis and Calorimetry

收录：EI(收录号：20082711343929)

语种：英文

外文关键词：Synthesis (chemical) - Fourier transform infrared spectroscopy - Lanthanum compounds - Neodymium compounds - Single crystals - Thermoanalysis - Thermolysis - Cobalt compounds - Carboxylation - Dysprosium compounds - Rare earths - Antimony compounds - Pyrolysis - X ray diffraction

摘要：Four ethylenediamine-N,N,N',N'-tetraacetate complexes with Sb(III)-M-Sb(III) polynuclear structure (M=Co(II), La(III), Nd(III), Dy(III)) are synthesized. [Sb2-μ4-(EDTA)2Co(H 2O)2]?5.15H2O is characterized by single crystal X-ray diffraction. The crystal structure of [Sb2- μ4-(EDTA)2Co(H2O)2]?5. 15H2O belongs to monoclinic system, space group P21/n, lattice parameters: a=6.9969(2), b=20.8705(4), c=10. 8106(2) ?, β=90.031(1)°, V=1578.66(6) ?3, Z=2, Mr=1007.76, Dc=2.120 g cm-3, F(000)=1001, μ=2.323 mm-1, the final R=0.0235 and wR=0.0629 for 3480 observed reflections (I>2 (I)). The powder X-ray diffraction patterns of the complexes are also measured. Elemental analyses, FTIR spectra, TG-DSC and DTA of [Sb 2(EDTA)2Ln]NO3?nH2O are performed. FTIR spectra reveal that the antimony and other metallic ions were connected through the carboxylate bridges. The thermal analysis can demonstrate the complex formation of the antimony, other metallic ions and EDTA. The possible pyrolysis reactions in the thermal decomposition process of the complexes, the experimental and calculated percentage mass losses are also given. ? 2008 Springer Science+Business Media, LLC.