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Citation: 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, 9(5): 1-5. shu

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)

1.
Shanghai Institute of Organic chemistry, Academia Sinica, Shanghai 200032

Corresponding author: Xu Qingren,
Received Date: 25 July 1991
Available Online: 23 March 1992

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).
- monoalkyl t-butylphosphonate,
- extraction,
- Yb(Ⅲ),
- Lu(Ⅲ)
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