文献类型：期刊文献

英文题名：Synthesis, characterization and thermal decomposition of Sb^III-M-Sb^III 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]SW Univ Sci & Technol, Dept Chem, Mianyang 621010, Peoples R China;[2]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R 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：;WOS:【SCI-EXPANDED(收录号:WOS:000255957400042)】；

语种：英文

外文关键词：antimony; complex; crystal structure; rare earth metal; thermal decomposition

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. [Sb-2-mu(4)-(EDTA)(2)Co(H2O)(2)]center dot 5.15H(2)O is characterized by single crystal X-ray diffraction. The crystal structure of [Sb-2-mu(4)-(EDTA)(2)Co(H2O)(2)]center dot 5.15H(2)O belongs to monoclinic system, space group P2(1)/n, lattice parameters: a=6.9969(2), b=20.8705(4), c=10.8106(2) angstrom, beta=90.031(1)degrees, V=1578.66(6) angstrom(3), Z=2, M-r=1007.76, D-c=2.120 g cm(-3), F(000)=1001, mu=2.323 mm(-1), the final R=0.0235 and wR=0.0629 for 3480 observed reflections (I > 2 sigma(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)(2)Ln]NO3 center dot nH(2)O 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.