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Metal extractions by diglycolamide-type tridentate ligands

ジグリコール型三座配位子による金属抽出

佐々木 祐二  ; 森田 圭介 ; 佐伯 盛久*; 久松 修吾*; 吉塚 和治*

Sasaki, Yuji; Morita, Keisuke; Saeki, Morihisa*; Hisamatsu, Shugo*; Yoshizuka, Kazuharu*

ソフト,ハードドナーを含む3つの3座配位系抽出剤を開発した(TODGA, MIDOA, TDGA)。エーテル酸素を持つTODGAはハード金属、エーテル位に窒素を持つMIDOAはソフト金属とオキシアニオン、またエーテル位にイオウを持つTDGAはソフト金属を抽出できる。我々はTODGA, MIDOA, TDGAにより得られた各金属の分配比を比較した。また、これらの結果とIR, NMR, UV、及び化学計算で得られた結果と突き合わせて議論した。

Three tridentate extractants including soft and hard donor has been developed and examined. The extractants are termed as $$N, N, N', N'$$-tetraoctyl-diglycolamide (TODGA), methylimino-$$N, N'$$-dioctylacetamide (MIDOA) and $$N, N, N', N'$$-tetraoctyl-thiodiglycolamide (TDGA). The results of the present study show that TODGA can extract completely lanthanides and actinides, MIDOA can extract palladium, technetium, and rhenium, and TDGA can extract palladium, silver, and gold. We can compare the distribution ratios of these metals by TODGA, MIDOA, and TDGA. These results can be supported by some spectrometric studies, i.e., IR, NMR and UV, and calculations of metal complexes.

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