| 稀土气态配合物REAl_3Br_(12)稳定性规律 |
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| 引用本文： | 于锦,王之昌. 稀土气态配合物REAl_3Br_(12)稳定性规律[J]. 中国稀土学报, 2010, 28(2) |
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| 作者姓名： | 于锦 王之昌 |
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| 作者单位： | 1. 沈阳工业大学理学院,辽宁,沈阳,110187
2. 东北大学理学院,辽宁,沈阳,110004 |
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| 基金项目： | 国家自然科学基金，辽宁省教育厅科学研究项目计划 |
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| 摘 要： | 采用骤冷法对反应REBr3(s)+(3/2)Al2Br6(g)=REAl3Br12(g)进行研究,实验温度和压力范围分别是600~850 K和0.0077~0.22 MPa,反应平衡时间为6 h。测定它们在不同温度下的稳定常数。结果显示,中稀土的气态配合物稳定常数最大。以气态配合物REAl3Br12的lgKp与Z+/r作图,可将镧系稀土元素分为La-Eu,Eu-Er和Er-Lu三组,在每一组内,REAl3Br12的稳定常数均呈线性关系。在稀土气态配合物RE-Al3Br12稳定常数与原子序数及离子势(Z+/r)的变化关系中都存在着钆断现象。REAl3Br12稳定常数的对数值对RE(Ⅲ)的基态角量子数作图,得到四条直线,类似斜W效应。
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| 关 键 词： | 气态配合物 钆断 斜W效应 稀土 |
Systematic Study on Stability of the Rare Earth Vapour Complexes:REAl_3Br_(12) |
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| Yu Jin,Wang Zhichang. Systematic Study on Stability of the Rare Earth Vapour Complexes:REAl_3Br_(12)[J]. Journal of the Chinese Society of Rare Earths, 2010, 28(2) |
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| Authors: | Yu Jin Wang Zhichang |
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| Affiliation: | Yu Jin1,Wang Zhichang2(1.School of Science,Shenyang University of Technology,Shengyang 110187,China,2.School of Science,Northeastern University,Shengyang 110004,China) |
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| Abstract: | By quenching method,a study of the vapour complexes reaction REBr3(s)+(3/2)Al2Br6(g)=REAl3Br12(g)was presented.The scope of temperature and pressure in this experiment were 600~850 K and 0.0077~0.22 MPa,respectively.The reaction balance time was all about 6 h.The stability constants were tested.The research indicated that the lanthanide medium rare earth vapour complexes had the highest stability.The stability constant of REAl3Br12 complexes,when plotted against Z+/r,lanthanide elements could be divided int... |
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| Keywords: | REAl3Br12 |
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