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Citation: Ma Aizeng, Li Laiming, Zeng Guangfu, Wang Cuiying, Li Han. INFRARED SPECTRA OF RARE EARTH COMPLEXES OF 2-ETHYLHEXYL PHOSPHONIC ACID MONO(2-ETHYLHEXYL)ESTER[J]. Chinese Journal of Applied Chemistry, ;1989, 6(1): 41-45. shu

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

1.
Changchun Institute of Applied Chemistry, Academia Sinica

Received Date: 14 January 1988
Available Online: 29 June 1988

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 of these complexes have been studied and the principal infrared absorption bands have been assigned for region 4000-100cm^-1.The 150cm^-1 is believed to be Ln-O stretching vibration band, and the band near 250cm^-1 is the coupling band of COPO, CCPO skeleton torsion vibration with Ln-O bond. The experimental result showed that Ln-O bonds in these rare earth complexes are principally ionic.,The FO₂ coordination with rare carth is in bridging form. A Volymeric model of the complexes is proposed(Fig. la)
- Rare earth complex,
- Phosphonic acid ster,
- FT Infrared spectrum,
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