2013年1月
N-メチル-N-フェニル-2-(1H-ベンズイミダゾール-2-イル)ピリジン-6-カルボキシアミドと三価ランタノイドにおける抽出と錯形成の研究
Solvent Extraction Research and Development, Japan
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- 巻
- 20
- 号
- 開始ページ
- 105
- 終了ページ
- 114
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.15261/serdj.20.105
- 出版者・発行元
- Japan Association of Solvent Extraction
The extractability and complexation properties of trivalent lanthanides with N-methyl-N-phenyl-2-(1H-benzimidazol-2-yl)pyridine-6-carboxamide (MePhBIZA) were investigated. The MePhBIZA, containing two aza-aromatic donors and an oxygen donor in the molecule, was designed with regard to 2-(2-pyridyl)benzimidazole (Biz) and newly synthesized as an extractant for trivalent lanthanides, Ln3+, and actinides, An3+. The MePhBIZA exhibited satisfactory extractability of Eu3+ even under acidic conditions. A speciation diagram, based on the formation constants determined by spectroscopic titration experiments, indicated that the MePhBIZA formed complexes with Eu3+ in acidic solution. These results showed that the addition of the amide group promotes ligand coordination with Eu3+ over the competing protonation reaction in relatively acidic solution in comparison with Biz.
- リンク情報
- ID情報
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- DOI : 10.15261/serdj.20.105
- ISSN : 1341-7215
- CiNii Articles ID : 130005056963
- CiNii Books ID : AA11114608