引用本文:
高宏成, 吴瑾光, 翁诗甫, 徐光宪. 2-乙基己基膦酸单2-乙基己基酯与稀土络合物的FT-IR研究[J]. 应用化学,
1984, 1(2): 36-40.
Citation: Gao Hongcheng, Wu Jinguang, Weng shifu, Xu Guangxian. THE FOURIER TRANSFORM INFRARED SPECTRA OF FIFTEEN RARE EARTH-EHPAEH COMPLEXES[J]. Chinese Journal of Applied Chemistry, 1984, 1(2): 36-40.
Citation: Gao Hongcheng, Wu Jinguang, Weng shifu, Xu Guangxian. THE FOURIER TRANSFORM INFRARED SPECTRA OF FIFTEEN RARE EARTH-EHPAEH COMPLEXES[J]. Chinese Journal of Applied Chemistry, 1984, 1(2): 36-40.
2-乙基己基膦酸单2-乙基己基酯与稀土络合物的FT-IR研究
摘要:
本文制备了15种稀土元素与2-乙基已基膦酸单2-乙基已基酸(EHPAEH)的固体和溶液络合物,测定了他们的FT-IR光谱和减法光谱。在固体和溶液络合物的减法光谱中,在1200cm-1和990cm-1附近,得到两对正峰和负峰。前一对分别对应于Vp=0→M和Vp=0,后-对分别对应于Vp-0-M和Vp-0-H。Vp=0→M,Vp-0-M和远红外区的150cm-1峰(V0=M)随镧系原子序数的变化,表现出明显的“四分组”效应。稀土元素钇(Y)的位置在Er和Tm之间。
English
THE FOURIER TRANSFORM INFRARED SPECTRA OF FIFTEEN RARE EARTH-EHPAEH COMPLEXES
Abstract:
2-Ethylhexylphosphonic acid mono(2-ethylhexyl) ester (EHPAEH) is a more effective extractant than D2EHPA for extraction of rare earths.Fifteen solid and solution rare earth-EHPAEH complexes in kerosine have been prepared and their FT-IR spectra have also been studied using a subtraction technique. In the FT-IR subtraction spectra of either the extracted species in the organic phase or the solid complexes, a positive peak and a negative one were observed corresponding to νP=O→M and νP=O respectively, or to νP-O-M and νP-O-H respectively. The variation of νP=O→M, νP-O-M and νO-M (150cm-1) with the atomic number of lanthanides was shown in Fig.5 and Fig.7 for the solid com-plexes. These curves show an obvious "tetrad effect", Y being located be-tween Er and Tm.
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