ADDUCT FORMATION PROPERTIES OF MONODENTATE AND BIDENTATE PHOSPHINE OXIDE COMPOUNDS IN THE LIQUID-LIQUID-EXTRACTION OF SOME DIVALENT METALS WITH 1-PHENYL-3-METHYL-4-BENZOYL-5-PYRAZOLONE

被引：33
|
作者：
UMETANI, S
KIHARA, S
MATSUI, M
机构：
[1] Institute of Chemical Research, Kyoto University, Uji, Kyoto
来源：
ANALYTICA CHIMICA ACTA | 1990年 / 232卷 / 02期
关键词：
D O I：
10.1016/S0003-2670(00)81246-5
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The bidentate phosphine oxide compounds bis(diphenylphosphinyl)methane (BDPPM) and bis(diphenylphosphinyl)ethane (BDPPE) were synthesized and the liquid-liquid extraction equilibria of some divalent metal ions such as Co(II), Ni(II), Zn(II) and Cd(II) with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP) and the neutral phosphine oxide compounds were investigated. BDPPM was found to be much more powerful than BDPPE and the monodentate neutral ligand trioctylphosphine oxide (TOPO). The composition of the extracted species were determined by a graphical method to be M(PMBP)2(TOPO)s (s = 2 for Co, Ni, Cd and s = 1 for Zn), M(PMBP)2(BDPPM) and M(PMBP)2(BDPPE). The adduct formation constants between the acylpyrazolone chelates and the neutral ligands were determined and are discussed in terms of the molecular structure. © 1990.
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收藏
页码：293 / 299
页数：7
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