Zn (II) とCd (II) のモノメール16電子π-ディボレン複合体
Sunewang R Wang1,2, Merle Arrowsmith1,2, Holger Braunschweig1,2
1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg , Am Hubland, 97074 Würzburg, Germany.
Journal of the American Chemical Society
|July 27, 2017
まとめ
研究者は,ディボレンリガンドを使用して新しい亜鉛とカドミウムπ複合体を作成した. これらの複合体は,亜鉛の弱いπ-バックドネーションの制限を単純オレフィンで克服し,安定した金属-ディボレン化合物を可能にします.
科学分野:
- 有機金属化学
- メイングループ 化学
- 協調化学
背景:
- 安定したπ複合体は,オレフィンを含むCu (I) やNi (0) のようなd10金属に共通している.
- d10 Zn(II) は,限られたπ-バックドネーション能力により,単純なオレフィンと弱い複合体を形成する.
研究 の 目的:
- オレフィンで分離可能なZn (II) とCd (II) のπ複合体を合成する.
- Zn (II) 複合における弱いπ-バックドネーションの限界を克服する.
主な方法:
- 中性ディボレンを用いた単体16電子M(II) -ディボレン (M = Zn,Cd) π複合体の合成.
- 単結晶X線分析,溶液NMR,UV-Vis吸収スペクトロスコーピーを用いた特徴付け.
主要な成果:
- 安定したM (II) -二ボレンπ複合体は,良い収穫で合成された.
- 金属-B2π相互作用は固体および溶液状態で確認された.
- 三角平面幾何学は,M ((II)) センターの周りに,ボロン原子とほぼ対称な相互作用を持つ.
結論:
- 高い π ((B=B) 軌道を持つ中性ディボレンは,安定した Zn ((II)) と Cd ((II)) π-複合体の形成を促進する.
- 複合体の幾何学と回転角度は,ステリック相互作用に依存する.
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