中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (1): 41-45.

• 研究论文 • 上一篇    下一篇

稀土HEH[EHP]固体配合物的红外光谱

马爱增, 李来明, 曾广赋, 王翠英, 李涵   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1988-01-14 修回日期:1988-06-29 出版日期:1989-02-10 发布日期:1989-02-10
  • 基金资助:
    国家自然科学基金

INFRARED SPECTRA OF RARE EARTH COMPLEXES OF 2-ETHYLHEXYL PHOSPHONIC ACID MONO(2-ETHYLHEXYL)ESTER

Ma Aizeng, Li Laiming, Zeng Guangfu, Wang Cuiying, Li Han   

  1. Changchun Institute of Applied Chemistry, Academia Sinica
  • Received:1988-01-14 Revised:1988-06-29 Published:1989-02-10 Online:1989-02-10

PDF

455

被引次数

56 | 16

摘要： 本文制备了La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Y等十五种稀土与2-乙基己基膦酸单(2-乙基己基)酯的固体配合物,测定了4000-100 cm-1的FT-IR光谱,对其主要红外光谱吸收带进行了归属。指认150 cm-1为Ln-O键的伸缩振动带,250 cm-1附近的谱带为COPO,CCPO骨架扭曲振动与Ln-O键的耦合振动带。结果表明配合物为多聚体系,PO2与稀土离子可能为桥式配位形式。Ln-O键基本上为离子键。

关键词: 稀土, 配合物, 膦酸酯, 红外光谱

Abstract: The solid complexes of La, Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho, Er,Tm, Yb, Lu, and Y with 2-ethylhexyl phosphonic acid mono(2-ethylhexyl)ester were prepared.FTIR spectra ofthese complexes have been studied and the principal infrared absorption bands have beenassigned for region 4000-100 cm-1.The 150 cm-1 is believed to be Ln-O stretching vibrationband, and the band near 250 cm-1 is the coupling band of COPO, CCPO skeleton torsionvibration with Ln-O bond. The experimental result showed that Ln-O bonds in these rareearth complexes are principally ionic.The FO2 coordination with rare carth is in bridging form. A Volymeric model of the complexes is proposed(Fig. la)

Key words: Rare earth complex, Phosphonic acid ster, FT Infrared spectrum

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