| 稀土异硫氰酸盐与二甲基亚砜配合物的合成,性质及热分析研究 |
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| 引用本文： | 孙同山,张建华.稀土异硫氰酸盐与二甲基亚砜配合物的合成,性质及热分析研究[J].高等学校化学学报,1989,10(12):1167-117. |
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| 作者姓名： | 孙同山 张建华 |
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| 作者单位： | 山东大学化学院，山东大学化学院，山东大学化学院，山东大学 兼职教授 |
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| 摘 要： | 合成了15种稀土异硫氰酸盐与二甲基亚砜(DMSO)的配合物,经化学分析和元素分析确定其组成为RE(NCS)_s·mDMSO(RE=La,Ce,Pr,Nd,Sm,Eu,Gd;m=5.RE=Tb,Dy,Ho,Er,Tm,Yb,Lu,Y;m=4).用红外光谱及X射线衍射技术进行了表征.运用TG-DTA-DTG联用技术研究了该系列配合物的热分解过程,求算热重动力学参数发现,第一步热分解阶段的活化能随着中心高子——镧系元素原子序数的依次递增呈现“双峰现象”.
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| 关 键 词： | 稀土配合物 异硫氰酸盐 二甲亚砜 |
Studies on Synthesis, Properties and Thermal Analysis of Complexes of Rare Earth Isothiocyanates with Dimethyl Sulfoxide |
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| Sun Tongshan,Zhang Jianhua,Jiang Bengao,Yin Jingzhi.Studies on Synthesis, Properties and Thermal Analysis of Complexes of Rare Earth Isothiocyanates with Dimethyl Sulfoxide[J].Chemical Research In Chinese Universities,1989,10(12):1167-117. |
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| Authors: | Sun Tongshan Zhang Jianhua Jiang Bengao Yin Jingzhi |
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| Abstract: | Fifteen new solid complexes of rare earth isothiocyanates with dimethyl sulfoxide (DMSO) were synthesized and characterized by chemical analysis, IR and X-ray diffraction. Compositions of the complexes conform to the formula RE(NCS)3.mDMSO(RE=La, Ce, Pr, Nd, Sm, Eu, Gd, m = 5, RE=Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, m= 4).Thermal decompositions of the complexes were studied by TG-DTA-DTG. The values of activation energy and reaction order for the first steps of decomposition of the complexes were determined from TG curves, using the Coats-Redfern method. The results show that the activation energy depends on the atomic number of lanthanoids, and "double peak phenomenon" is observed. |
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| Keywords: | Rare earth Isothiocyanate Dimethyl sulfoxide Thermal analysis |
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