STUDIES ON HIGHLY STERICALLY HINDERED ORGANOPHOSPHORUS EXTRACTANTS Ⅲ. SYNTHESIS OF MONOALKYL t-BUTYLPHOSPHONATES AND RELATIONSHIP BETWEEN THEIR STRUCTURES AND EXTRACTION BEHAVIOUR ON Yb(Ⅲ), Lu(Ⅲ)

Chinese Journal of Applied Chemistry ›› 1992, Vol. 0 ›› Issue (5): 1-5.

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STUDIES ON HIGHLY STERICALLY HINDERED ORGANOPHOSPHORUS EXTRACTANTS Ⅲ. SYNTHESIS OF MONOALKYL t-BUTYLPHOSPHONATES AND RELATIONSHIP BETWEEN THEIR STRUCTURES AND EXTRACTION BEHAVIOUR ON Yb(Ⅲ), Lu(Ⅲ)

Ye Weizhen, Xu Qingren, Shen Dingzhang

Shanghai Institute of Organic chemistry, Academia Sinica, Shanghai 200032

Received:1991-07-25 Revised:1992-03-23 Published:1992-10-10 Online:1992-10-10

Abstract

Abstract: A new series of monoalkyl t-butylphosphonates (MAtBP) with highly steric hindrance, t-C₄H₉P(O)(OR)OH, where R represents n-C₅H₁₇,-CH₂CH(C₂H₅)C₄H₉,-CH(CH₃)C₆H₁₃,-CH₂CH₂CH(CH₃)CH₂C(CH₃)₃ and n-C₁₂H₂₅, respectively, were synthesized and the relationship between their structure and extraction behaviour on Yb(Ⅲ), Lu(Ⅲ)Was investigated. Their extraction ability markedly decreases with the increase of the steric hindrance from ester alkyl group. There is an approximate linear correlation between pH_1/2 values and Charton steric parameter v of the ester alkyl groups. The stripping behaviour of Yb, Lu with MAtBP is superior to that with mono-2-ethylhexyl 2-ethylhexylphosphonate (P-507).

Key words: monoalkyl t-butylphosphonate, extraction, Yb(Ⅲ), Lu(Ⅲ)

Ye Weizhen, Xu Qingren, Shen Dingzhang. STUDIES ON HIGHLY STERICALLY HINDERED ORGANOPHOSPHORUS EXTRACTANTS Ⅲ. SYNTHESIS OF MONOALKYL t-BUTYLPHOSPHONATES AND RELATIONSHIP BETWEEN THEIR STRUCTURES AND EXTRACTION BEHAVIOUR ON Yb(Ⅲ), Lu(Ⅲ)[J]. Chinese Journal of Applied Chemistry, 1992, 0(5): 1-5.

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STUDIES ON HIGHLY STERICALLY HINDERED ORGANOPHOSPHORUS EXTRACTANTS Ⅲ. SYNTHESIS OF MONOALKYL t-BUTYLPHOSPHONATES AND RELATIONSHIP BETWEEN THEIR STRUCTURES AND EXTRACTION BEHAVIOUR ON Yb(Ⅲ), Lu(Ⅲ)

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