バイアキシアルハロゲン結合ドナーとしての高価ヨウ素 (III) 化合物
Flemming Heinen1, Elric Engelage1, Christopher J Cramer2
1Fakultät für Chemie und Biochemie, Organische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150,44801 Bochum, Germany.
Journal of the American Chemical Society
|April 15, 2020
まとめ
この研究は,ヨウ素 (III) 化合物が強力な二軸ハロゲン結合ルイス酸として作用することを明らかにしています. この発見は,非共性相互作用を大幅に強化し,超分子化学と材料科学に新しい道を開きます.
科学分野:
- 有機化学
- 超分子化学
- クリスタルグラフィー
背景:
- ハイパーバレンスのヨウ素 (III) 化合物は有機反応剤として知られています.
- ハロゲン結合のルイス酸としての可能性は未熟である.
- ヨウ素 (III) 塩は,結合のための独特の垂直の電ophilic 軸を持っています.
研究 の 目的:
- ヨウ素 (III) ルイス酸を用いて溶液中の二軸ハロゲン結合を体系的に調査する.
- 阻害されたヨドリウムと無阻害のヨドリウム種の結合能力を研究する.
- これらの新しい非共性相互作用の強さを定量化する.
主な方法:
- 1H NMRスペクトロスコピーを用いた溶液状態の定位実験.
- 結合親和度を測定するためのアイソテルミック・タイトレーション・カロメトリー (ITC)
- 理論的検証のための密度関数理論 (DFT) 計算.
- 固体相互作用を確認するためのコクリスタライゼーション試験.
主要な成果:
- 溶液中の二軸ハロゲン結合の 明確な証拠を示した.
- アソシエーションの強度が 2 度増加した.
- DFTの計算は,観察された拘束力のある傾向を支持した.
- 固体状態での二軸調整が確認されました.
結論:
- ヨウ素 (III) 化合物は,溶液中の二軸ハロゲン結合ルイス酸として効果的に機能する.
- この結合モードは,従来の方法と比較して強化された非共性相互作用を提供します.
- この発見は,超有価ヨウ素の超分子化学における有用性を拡大する.
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