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Investigation of the extraction complexes of light lanthanides(III) with bis(2,4,4-trimethylpentyl)dithiophosphinic acid by EXAFS, IR, and MS in comparison with the americium(III) complex
Tian, GX; Zhu, YJ; Xu, JM; Zhang, P; Hu, TD; Xie, YN; Zhang, J; Hu TD(胡天斗); Xie YN(谢亚宁); Zhang J(张静)
2003
发表期刊INORGANIC CHEMISTRY
卷号42期号:3页码:735-741
通讯作者Tsing Hua Univ, Inst Nucl Energy Technol, Beijing 100084, Peoples R China ; Inst High Energy Phys, BSRF, Beijing 100039, Peoples R China
摘要The structure of the extraction complexes of light lanthanides (La(III), Nd(III), Eu(III)) with bis(2,4,4-trimethylpentyl)dithiophosphinic acid (HBTMPDTP) have been characterized with extended X-ray absorption fine structure spectroscopy (EXAFS), IR, and MS; the IR spectrum of the extraction complex of Am-241 with HBTMPDTP has been studied too. The molecular formula of the extraction complexes of lanthanides is deduced to be HML4.H2O (M = La, Nd, Eu; L = anion of HBTMPDTP). The coordination number of Ln(III) in the complexes is 8; the coordinated donor atoms are 7 sulfur atoms from 4 HBTMDTP molecules and 1 O atom from a hydrated water molecule. With the increase of the atomic number of Ln, the coordination bond lengths of Ln-O and Ln-S decrease in the complexes. For La(III), Nd(III), and Eu(III), the coordination bond lengths of Ln-O are 2.70, 2.56, and 2.50, respectively, the coordination bond lengths of Ln-S are 3.01, 2.91, and 2.84, respectively, and the average distances between Ln and P atoms are 3.60, 3.53, and 3.46, respectively. The structure of the extraction complexes of Ln(III) with HBTMDTP is different from that of the Am(III) extraction complex. The results of IR show that there is no water coordinated with Am in the extraction complex. The molecular formula of the complex of Am(III) is deduced as being HAmL4, and there are 8 S atoms from 4 HBTMPDTP molecules coordinated with Am. Composition and structure differences of the extraction complexes may be one of the most most important factors affecting the excellent selectivity of HBTMPDTP for Am(III) over Ln(III).
文章类型Article
学科领域Chemistry
研究领域[WOS]Chemistry
DOI10.1021/ic025783z
URL查看原文
语种英语
WOS类目Chemistry, Inorganic & Nuclear
WOS记录号WOS:000180870300016
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238387
专题多学科研究中心
实验物理中心
作者单位中国科学院高能物理研究所
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Tian, GX,Zhu, YJ,Xu, JM,et al. Investigation of the extraction complexes of light lanthanides(III) with bis(2,4,4-trimethylpentyl)dithiophosphinic acid by EXAFS, IR, and MS in comparison with the americium(III) complex[J]. INORGANIC CHEMISTRY,2003,42(3):735-741.
APA Tian, GX.,Zhu, YJ.,Xu, JM.,Zhang, P.,Hu, TD.,...&张静.(2003).Investigation of the extraction complexes of light lanthanides(III) with bis(2,4,4-trimethylpentyl)dithiophosphinic acid by EXAFS, IR, and MS in comparison with the americium(III) complex.INORGANIC CHEMISTRY,42(3),735-741.
MLA Tian, GX,et al."Investigation of the extraction complexes of light lanthanides(III) with bis(2,4,4-trimethylpentyl)dithiophosphinic acid by EXAFS, IR, and MS in comparison with the americium(III) complex".INORGANIC CHEMISTRY 42.3(2003):735-741.
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