一,二電子酸化マンガンの構造と反応性
Huatian Shi1, Runhui Liang2, David Lee Phillips2
1Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong999077, People's Republic of China.
Journal of the American Chemical Society
|April 20, 2022
まとめ
研究者は,ボリュームの高いコロールリガンドで安定したマンガネス (V) ニトリド複合体を合成した. この複合体とその酸化形態は,窒素原子移転反応剤として高い反応性を示し,カチオン複合体は例外的に強力です.
科学分野:
- 無機化学
- 有機金属化学
- 材料科学
背景:
- 安定した,しかし高度に反応性のある金属ニトリドの種を設計することは,触媒的アプリケーションにとって極めて重要です.
- コロールリガンドは,金属センターにユニークな電子およびステリック環境を提供します.
研究 の 目的:
- 大量のコロールリガンドを持つ新しいマンガネス (V) ニトリド複合体を合成し,特徴づけること.
- 窒素原子移転反応剤としてこれらの複合体の反応性を調査する.
- 合成された種の電子構造と安定性を理解するために
主な方法:
- マンガン ((V) ニトリドコロール複合体の合成.
- 電気化学的酸化と特徴づけ
- 構造の決定のためのX線結晶学.
- 顕微鏡 (例えば,UV-Vis,NMR) と理論 (例えば,DFT) 研究
- 窒素原子移転反応の運動研究
主要な成果:
- 安定したマンガン ((V) ニトリド複合体 (Mn ((N)) ((TTPPC)) が合成された.
- 酸化により中性 (2) とカチオン (3) の複合体が生成され,それらは固体および溶液状態で安定した.
- 構造的,スペクトル学的および理論的分析により,複合体2および複合体3のπ-cationおよびπ-dicationコロール製剤が明らかになった.
- 複合体3は窒素原子移転反応剤として非常に高い反応性を示し,複合体2の反応性を >107に上回った.
結論:
- 大量のコロールリガンドは,反応性マンガンニトリド種を安定させることができる.
- 酸化状態とコロールリガンドの電子構造は,マンガンニトリド複合体の反応性に大きく影響する.
- カチオン複合体3は,合成用途の非常に強力で有望な窒素原子転送反応剤を表しています.
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