リガンドで安定したメイングループ断片のドナー強さの定量化
Leon Maser1, Christian Schneider1, Lisa Vondung1
1Department of Chemistry , Philipps-Universität Marburg , Hans-Meerwein-Str. 4 , 35032 Marburg , Germany.
Journal of the American Chemical Society
|April 19, 2019
まとめ
ボロンと炭素化合物のようなリガンド安定化主群の断片は,強力なドナー特性を示します. この研究は,均質な触媒の研究を助けるために,それらの結合強さを定量化します.
科学分野:
- 協調化学
- 有機金属化学
- ホモゲネス・カタリシス
背景:
- リガンドで安定した主要群の断片 (例えば,カルボディフォスファラン,カルベン) は,難解な種を安定させ,均質な触媒作用で有望である.
- これらの断片の結合特性を実験的に定量化して比較することは依然として大きな課題です.
研究 の 目的:
- イリジウム (III) ピンサー複合体における中央ドナー群 (E) のドナー強度を定量化して比較する.
- ニュートラルドナーリガンドとしてのフォスフィン安定化ボロン ((I)) と炭素 ((0)) 化合物の電子特性を調査する.
主な方法:
- イリジウム ((III) ピンサー複合体の合成と特徴付け [ ((PEP) IrCl ((CO)) ((H)) ]^q (q = 0, +1, +2).
- ドナーの強さの実験的定量化
- 実験的発見を裏付ける量子化学計算と,より重い同類物を探求する.
主要な成果:
- フォスフィンで安定したボロン ((I)) と炭素 ((0)) の化合物は,非常に強い中性ドナー群として機能する.
- これらの新しいリガンドは,カルベンやフォスフィンのような一般的な観衆リガンドと比較して優れたドナー強度を示しています.
- この研究は,カチオン性,中性,およびアニオン性リガンドのドナー強度を比較するための最初の実験的および計算的基礎を提供します.
結論:
- リガンドで安定したボロンと炭素の断片は強力な中性ドナーであり,均質な触媒に価値があります.
- これらのフォスフィンで安定したボリレンと炭素化合物のより重い類型は,ドナーの性質がわずかに低下している.
- この研究は,調整化学と触媒における主要なグループ要素の理解と応用を進める.
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