内部圏の窒素還元によるCe (IV) オキソ複合体の形成
Peter L Damon1, Guang Wu1, Nikolas Kaltsoyannis2
1Department of Chemistry & Biochemistry, University of California , Santa Barbara, California 93106, United States.
Journal of the American Chemical Society
|September 14, 2016
まとめ
この研究は,新しいセリウムオクソ複合体の合成を詳細に説明する.
科学分野:
- 有機金属化学
- 非有機合成
- ランタニド化学
背景:
- セリウム複合体は,触媒と材料科学で価値があります.
- セリウムオクソ種の結合と反応性を理解することは,新しい合成方法論の開発に不可欠です.
研究 の 目的:
- 新しいセリウムオクソ複合体を合成し,特徴づけること.
- セリウムオクソリガンドの反応性と電子構造を調査する.
- 同様のウラン系とのセリウム-酸素結合を比較する.
主な方法:
- 12-クラウン-4の存在下でのセリウム窒素とリチウムアミド塩基の反応
- セリウムオクソ複合体とニート中間物の分離と特徴付け
- シリル塩化物とセリウムオクソ複合体の反応により,オクソリガンドの核好性を探知する.
- 自然結合軌道 (NBO) と分子における原子の量子理論 (QTAIM) を用いた計算分析.
主要な成果:
- 内部球の窒素還元による36%の収量で[Li{12-crown-4) ][NN' 3) Ce{O) ]を合成する.
- Ce (III) 酸ナトリウムの中間物質である[Li (−12-crown-4) ][NN' 3) Ce (−κ2-O2NO) ]の形成 (2).
- シリル塩化物と反応して (NN' 3) Ce(OSi tBuMe 2) (3) を形成することで,オクソリガンドの核性性を確認する.
- NBOとQTAIMの分析は,UOの債券と似たようなCe-O債券の重要な共価性を示しています.
結論:
- 新型セリウムオクソ複合体が成功して合成され,特徴づけられました.
- オキシオリンガンドは核愛性行動を示し,さらなる機能化を可能にします.
- Ce-O結合の電子構造は,f元素結合の洞察を提供する,ウラン系と比較できる,重要な共性性質を示している.
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