高等学校化学学报

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (10): 871.

• 研究论文 • 上一篇    下一篇

稀土硝酸盐冠醚配合物(ⅩⅣ)—La(NO3)3·4H2O-B12C4-CH3CN三元体系在25℃时溶解度的研究

蒋海盈, 吕余刚, 张西芳, 万有甲   

  1. 西北大学化学系
  • 收稿日期:1985-04-16 出版日期:1986-10-24 发布日期:1986-10-24

Complexs of Crown Ether with the Rare Earth Nitrates(XIV)—Studies on Solubilities of the Ternary System La(NO3)3·4H2O-B12C4-CH3CN at25℃

Hang Haiying, Lu Yugang, Zhang Xifang, Wan Youjia   

  1. Department of Chemistry, Northwest University, Xi'an
  • Received:1985-04-16 Online:1986-10-24 Published:1986-10-24

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摘要： 本文研究了La(NO3)3·4H2O-B12C4-CH3CN三元体系在25℃时的溶解度,发现有一条覆盖范围较大的溶解度曲线与组成为La(NO3)3·B12C4·4H2O的固相相对应。用合成方法制得了配合物La(NO3)3·B12C4·2H2O,通过化学分析、气相色谱、分光光度分析研究了配合物的组成;通过红外光谱、紫外光谱、X-射线衍射以及DSC和TG等研究了它的一些物理化学性质。

Abstract: The solubilities of the ternary system La(NO3)3·4H2O-B12C4-CH3CNat 25℃ have been determined by the semimicro method in order to summarize general information of complexation about rare earth nitrates and crown ether B12C4 in organic solvents.The results indicate that there is only one complex La(NO3)3 B12C4·4H2Oformed,the possibility to form any other complcxs species with different stoichiometry has been ruled out.Arelatively stable complex species La(NO3)3·Bl2C4·2H2Owas synthesized.its characters were described by chemical analysis,I.R.spectra,U.V.spectra,spcctrophotometry,gas chromatogrpny,X-ray diffraction,themogravimetric and differential thermal analysis.

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