Effect of Tris(acetylacetonato)chromium(III) as a Complex Ligand on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone

Naohiro Kameta; Hisanori Imura

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Effect of Tris(acetylacetonato)chromium(III) as a Complex Ligand on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone

机译：三（乙酰丙酮基）铬（III）作为配体对2-壬基三氟丙酮萃取镧系元素（III）的影响

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Enhancement of the extraction of lanthanoid(III) (Ln) with 2-thenoyltrifluoroacetone (Htta) in cyclohexane or benzene has been observed by the addition of tris(acetylacetonato)chromium(III) (Cr(acac)_3). The equilibrium analysis suggested that the effect of Cr(acac)_3 could be ascribed to the formation of a 1:1 adduct of Ln(tta)_3 with Cr(acac)_3, i.e., a binuclear complex, in the organic phase. The formation constants (#beta#_(s,1)) of the adducts were determined across the Ln series. The #beta#~(s.1) values decreased with decrease in the ionic radii of Ln in the light Ln, and were constant in the heavy Ln. Spectroscopic studies such as electronic absorption, IR, and ~1H NMR were performed to explain the difference between the light and heavy Ln. The adduct of light Ln is mainly an inner sphere complex in which Cr(acac)_3 displaces the coordinated water of the Ln chelate and directly coordinates to the Ln ion. On the other hand, the adduct of heavy Ln is an outer sphere complex formed yb the hydrogen bonding between Cr(acac)_3 and the coordinated water of the Ln chelate. Abilities of Cr(acac)_3 as acomplex ligand, i.e., the basicity and the steric factor, were evaluated by comparing wtih Co(acac)_3 reported previously.

机译：通过添加三（乙酰丙酮基）铬（III）（Cr（acac）_3），已观察到在环己烷或苯中用2-巯基三氟丙酮（Htta）萃取镧系元素（III）（Ln）的增强作用。平衡分析表明，Cr（acac）_3的作用可归因于Ln（tta）_3与Cr（acac）_3，即双核络合物在有机相中的1：1加合物的形成。在整个Ln系列中确定加合物的形成常数（#beta #_（s，1））。＃beta＃〜（s.1）值随光Ln中Ln离子半径的减小而减小，而在重Ln中恒定。进行了光谱学研究，例如电子吸收，IR和〜1H NMR，以解释轻和重Ln之间的差异。光Ln的加合物主要是内球络合物，其中Cr（acac）_3取代了Ln螯合物的配位水并直接与Ln离子配位。另一方面，重Ln的加合物是由Cr（acac）_3和Ln螯合物的配位水之间的氢键形成的外球络合物。通过与先前报道的Co（acac）_3的比较来评估作为复杂配体的Cr（acac）_3的能力，即碱性和空间因子。

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《Bulletin of the Chemical Society of Japan》 |2001年第9期|共7页
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Naohiro Kameta; Hisanori Imura;
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中图分类化学;化学工业;
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1. Effect of Tris(acetylacetonato)chromium(III) as a Complex Ligand on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone [J] . Naohiro Kameta, Hisanori Imura Bulletin of the Chemical Society of Japan . 2001,第9期

机译：三（乙酰丙酮基）铬（III）作为配体对2-壬基三氟丙酮萃取镧系元素（III）的影响
2. Synergistic effect of tris(acetylacetonato)cobalt (III) as complex ligand on the extraction of lanthanoid (III) with thenoyltrifluoroacetone. [J] . Kameta N., Imura H. 希土類 . 1999,第34期

机译：Tris（乙酰丙酮酸盐）钴（III）作为复合配体对镧（III）萃取的复合配体的协同作用。
3. Synergistic effect of tris(acetylacetonato)cobalt (III) as complex ligand on the extraction of lanthanoid (III) with thenoyltrifluoroacetone. [J] . Kameta N., Imura H. 希土類 . 1999,第34期

机译：Tris（乙酰丙酮酸盐）钴（III）作为复合配体对镧（III）萃取的复合配体的协同作用。
4. Luminescent Single-Ion Magnets from Lanthanoid(III) Complexes with Monodentate Ketone Ligands [C] . Takuya Kanetomo, Takayuki Ishida Irago Conference . 2016

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机译：涉及DL-缬氨酸和L-精氨酸作为次级配体的三亚氨基二乙酸铬（III）配合物的球内氧化。高碘酸盐氧化亚氨基二乙酰乙酸铬（III）配合物的等速动力学关系
7. Determination of molar refractions and Abraham descriptors for tris(acetylacetonato)chromium(iii), tris(acetylacetonato)iron(iii) and tris(acetylacetonato)cobalt(iii) [O] . Michael H. Abraham, William E. Acree, Anthony F. Fucaloro, 2017

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8. Ligand Isotopic Exchange Kinetics of Tris(Acetylacetonato)-Chromium(III) at Elevated Temperatures [R] . Kido, H., Saito, K. 1976

机译：三（乙酰丙酮） - 铬（III）在高温下的配体同位素交换动力学

Effect of Tris(acetylacetonato)chromium(III) as a Complex Ligand on the Extraction of Lanthanoid(III) with 2-Thenoyltrifluoroacetone

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