ブリッジングセリウム (IV) 窒素複合体の合成と特性
Henry H Wilson1, Xiaojuan Yu2, Thibault Cheisson1
1P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States.
Journal of the American Chemical Society
|January 5, 2023
まとめ
研究者らは,最初の分子セリウム-ニトリド複合体である[TriNOx]Ce[Li2μ-N) Ce[TriNOx]BArF4を報告した. この発見により,稀なランタニド-リガンド多重結合と4f/5d結合の理解が進んでいます.
科学分野:
- 無機化学
- 有機金属化学
- ランタニド化学
背景:
- ランタニド-リガンド多重結合は希少で反応性があり,合成と特徴化に課題がある.
- ランタニドの4f/5d結合を理解することは,dブロックとアクチニド元素との比較に不可欠である.
- 分子金属窒素複合体は合成的に価値のある標的です.
研究 の 目的:
- 最初の分子セリウムナトリド複合体を合成し,特徴づけること.
- セリウム-窒素の多重結合の性質を調査する.
- 他の元素とのランタニド4f/5d結合を比較する.
主な方法:
- モノメタリックセリウム (IV) -アンモニア複合体の脱プロトン化.
- X線結晶学を用いた分離と特徴付け
- 振動スペクトル検査 (IR) とX線スペクトル検査
- コンピュータによる分析 (DFT)
主要な成果:
- ブリッジングセリウム ((IV) 窒素複合体の分離と特徴: [ ((TriNOx) Ce ((Li2μ-N) Ce ((TriNOx)) ]BArF4).
- 平均CeNボンドの長さを2.117(3) Åとして決定する.
- 顕微鏡の証拠は,セリウムの+4酸化状態と,4f殻の結合に関与することを確認した.
結論:
- 最初の分子セリウムナトリド複合体は 合成され,特徴づけられた.
- この研究は,ランタニド-窒素多重結合の電子構造と結合に関する洞察を提供します.
- この研究は,複数の結合を持つ他の希少なランタニド複合体を探求するための道を開きます.
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