ゲルマニウムイソシアニド複合体は, (n → π*) バック結合を特徴とし,温和な条件下でC−H結合の活性化により,水化物/シアン化物製品に変換される
Zachary D Brown1, Petra Vasko, James C Fettinger
1Department of Chemistry, University of California, 1 Shields Avenue, Davis, California 95616, USA.
Journal of the American Chemical Society
|February 15, 2012
まとめ
ディアリルゲルミレンは,テルトブチルイソシアン化物と反応して,ルイス添加物を形成する. このアダクトはC−H結合の活性化を受け,ゲルマニウム水化物/シアン化物種とイソブテンを生成する.
科学分野:
- 有機金属化学 有機金属化学
- 無機化学 無機化学とは
背景:
- ディアリルゲルミレンは,二価ゲルマニウム化合物である.
- イソシアニドは,協調化学における多用途のリガンドである.
研究 の 目的:
- 特定のダイアリルゲルミレンとテルトブチルイソシアニドの間の反応を調査する.
- 結果となるルイス誘導体の結合相互作用と反応性を解明する.
主な方法:
- ディアリルゲルミレンとルイス添加物の合成.
- 結合を研究するために,光譜分析 (FT-IR) を行う.
- 電子構造を確認するための密度関数理論 (DFT) 計算.
主要な成果:
- ルイス・アダクトの形成, (Ar ((Me ((6))) ((2) GeCNBu ((t)) である.
- n → π* バックボンドリングを示すC-Nストレッチ周波数の低下の観察.
- DFTは,HOMOがイソシアン酸 π*軌道とGe-C結合を伴うことを確認した.
- 誘導体のC-H結合が容易に活性化される.
結論:
- ダイアリルゲルミレンは, tert-ブチルイソシアン化物と安定したルイス添加物を形成する.
- 結合は,ゲルマニウムからイソシアン酸リガンドへの重要なバックドネーションによって特徴付けられます.
- アドクトは反応性があり,C-H結合の活性化を経て,新しいゲルマニウム種を形成する.
関連する概念動画
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Isomers are different chemical species that have the same chemical formula. Structural isomerism of coordination compounds can be divided into two subcategories, the linkage isomers and coordination-sphere isomers.
Linkage isomers occur when the coordination compound contains a ligand that can bind to the transition metal center through two different atoms. For example, the CN− ligand can bind through the carbon atom or through the nitrogen atom. Similarly, SCN− can be...