摘要
以乙二胺四乙酸(H4edta)、三氧化二锑、氧化钆为主要原料,在水溶液中反应合成了锑(III)和钆(III)的三核杂金属配合物[Sb2(edta)2Gd(H2O)4]NO3·3H2O,用元素分析、红外光谱、X射线粉末衍射和热分析等方法对配合物的组成和结构进行了表征。X射线粉末衍射数据指标化计算结果证实该配合物晶体结构属于单斜晶系,晶胞参数为:a=11.259,b=9.689,c=20.489,β=94.099°。其热分解过程包括失水、配体及NO-3的氧化分解过程,最后完全形成金属氧化物。
The trinuclear heterometallic complex [ Sb2 （edta） 2 Gd （ H20 ）4 ] NO3 ＂ 3H20 was synthesized by liquid state reactions with ethylenediaminetetraacetic acid （I-I4edta）, antimonous oxide and gadolinium oxide as starting materials. The complex had been structurally determined by elemental analysis, FF-IR spectra, thermal analysis （TG-DSC） and X-ray powder diffraction analysis. The crystal structure of the title complex belonged to monoclinic system with crystal cell parameters of a = 11. 259 A, b =9. 689 A, c = 20. 489 A, β= 94. 099°. The possible pyrolysis reactions of the experimental and calculated percentage mass losses in the thermal decomposition processes were given. The thermal decomposition processes of the complex included dehydration, oxidation and pyrolysis of the edta4- ligand and nitrate ion, and finally as metallic oxide.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第8期1707-1711,1717,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(21201142)
四川省教育厅资助重点科研项目(10ZA0160)
关键词
乙二胺四乙酸
杂金属配合物
合成
表征
热分解
ethylenediaminetetraacetic acid
heterometallic complex
synthesis
thermal decomposition
