双金属ルテチウム複合体における[N2]2-の光誘発イソメリゼーション
Mingbin Yuan1, Andrew J McNeece2, Ekaterina A Dolgopolova3
1Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States.
Journal of the American Chemical Society
|November 1, 2024
まとめ
最初のランタナイド二酸化窒素の光スイッチが開発され,近赤外線を用いてサイドオンとエンドオンの調整モードの制御された異体化が可能になった. この発見は有機分子による 酸化還元反応の新たな経路を開きます
科学分野:
- 無機化学
- 有機金属化学
- 写真化学
背景:
- 二酸化窒素 (N2) は安定した分子であり,その活性化が窒素固定に不可欠である.
- ランタニド複合体は,化学的変換に特異な電子特性を提供します.
- N2リガンドの光スイッチ可能な調整モードは,ほとんど未知のものである.
研究 の 目的:
- ランタナイド・ディナイトロゲン・フォトスイッチを報告する
- ダイナトロゲンリガンドのサイドオンとエンドオン調整モードの制御されたイソメリゼーションを調査する.
- これらの複合体の光色特性と反応性を探求する.
主な方法:
- 二金属ルテチウム二酸化窒素複合体の合成と特徴付け
- 近赤外線 (NIR) によって誘発される光異体化.
- 構造分析のための単一X線微分法 (XRD) とラーマン光譜法.
- 電子構造と機械学的研究のための第一原理計算.
主要な成果:
- 最初のランタニド二酸化窒素光スイッチ, [(C5Me4H) 2 ((THF) Lu] 2 ((μ-η2:η2-N2) 1) が合成された.
- NIR光誘導の可逆性イソメリゼーションは,エンドオンイソメールである[{C5Me4H}2{THF}Lu]2{μ-η1:η1-N2}に発生する (2).
- オリジナル・リガンドと溶媒の構成は,光色化に不可欠でした.
- イソメリゼーションのメカニズム的詳細と電子構造が解明された.
- コンプレックス2はアントラゼンと反応し,ジヒドロアントラゼンとアントラゼンジマーを生成した.
結論:
- 新型ランタニド・ダイナトロゲン・フォトスイッチが発見された.
- サイドオンからエンドオンへのイソメリゼーションは,NIR光で制御できます.
- 光学スイッチは新しい酸化還元反応経路の可能性を示しています
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