物理化学学报 >> 1992, Vol. 8 >> Issue (05): 642-646.doi: 10.3866/PKU.WHXB19920513

研究论文 上一篇    下一篇

Er2(PhCH2COO)6·4H2O的结构及热分析

王增林; 胡宁海; 牛春吉; 倪嘉缵; 崔爱莉   

  1. 中国科学院长春应用化学研究所，长春 130022；长春冶金地质专科学校，长春 130021
  • 收稿日期:1991-04-12 修回日期:1992-03-20 发布日期:1992-10-15
  • 通讯作者: 王增林

Crystal Structure and Thermal Analysis of Erbium Complex with Benzene Acetic Acid

Wang Zeng-Lin; Hu Ning-Hai; Niu Chun-Ji; Ni Jia-Zuan; Cui Ai-Li   

  1. Changchun Institute of Chemistry, Chinese Academy of Science, Changchun 130022; Changchun Specialized School of Metallurgy and Geology, Changchun 130021
  • Received:1991-04-12 Revised:1992-03-20 Published:1992-10-15
  • Contact: Wang Zeng-Lin

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摘要： 用X-射线四圆衍射仪测定了Er_2(PhCH_2COO)_6·4H_2O的晶体结构。配合物属于单斜晶系, 空间群为P2_1/α, 晶胞参数:α=0.9008(3) nm, b=1.4243(5) nm, c=1.8437(7) nm, β=98.80(3)°, V=2.337(1) nm~3, Z=4. 采用TG-DTG-DTA研究了配合物的热分解过程, 确定了热分解机理。采用Freeman-Carroll方法计算了配合物脱水过程的活化能和反应级数。用DSC测定了配合物脱水, 熔化过程的焓变。

关键词: 稀土配合物, 晶体结构, 热分析

Abstract: The crystal structure of erbium (Ⅲ) complex of benzene acetic acid is reported. The complex crystallizes in the monoclinic space group P_2_1/a with a=0.9008(3) nm, b=1.4242(5) nm, c=1.8437(7) nm; β=98.80(3)°, V=2.337(1) nm~3, Z=4. The mechanism of thermal decomposition of complex has been studied by TG-DTG-DTA. The activation energy for dehydration reaction has been calculated by Freeman-Carroll method. The enthalpy change for dehydration and phase change process has been determined.

Key words: Erbium eomplex, Crystal structure, Thermal analysis