商品先駆体からのSi-HとSi-Me結合を持つオルガノシリコンラジカル
Subrata Kundu1, Prinson P Samuel1, Soumen Sinhababu1
1Universität Göttingen , Institut für Anorganische Chemie, Tammannstrasse 4, D-37077 Göttingen, Germany.
Journal of the American Chemical Society
|July 27, 2017
まとめ
研究者は安定したサイクルアルキルアミノカルベン (cAAC) 安定したシリコンビラジカルを分離した. この新しい化合物は,受容体のない最初の分離されたSiH2ビラジカルを含み,室温での驚くべき安定性を示しています.
科学分野:
- オルガノシリコン化学
- 炭酸塩化学
- ラジカル・ケミストリー
背景:
- サイクルアルキルアミノカルベン (cAAC) は,反応性のある種を安定させることが知られている.
- シリコンベースのビラジカルは,高い反応性があるため,分離し特徴づけることが困難です.
- 以前の研究では 安定化のために アクセプター分子が必要でした
研究 の 目的:
- cAACリガンドで安定した新しいシリコンを含むビラジカルを合成し,特徴づけること.
- これらのビラジカルの構造と電子の性質を調査する.
- アクセプター分子を必要とせずにシリコンバイラジカルを分離する可能性を調査する.
主な方法:
- (cAAC) 2SiH2, (cAAC) SiMe2-SiMe2 ((cAAC),および (cAAC) SiMeCl-SiMeCl ((cAAC) の合成について
- 構造の決定のための単結晶X線構造分析.
- 電子パラマグネティック共振 (EPR) スペクトロスコーピーは,基質の特徴を決定する.
- 構造と結合分析のための理論的計算方法
主要な成果:
- 3つの安定した分子バイラジカル種 (cAAC) 2SiH2 (1), (cAAC) SiMe2-SiMe2 ((cAAC) 2) と (cAAC) SiMeCl-SiMeCl ((cAAC) 3) を分離した.
- 化合物1〜3は,静止状態で室温で6ヶ月以上持続する.
- 化合物1は,受容体分子がなく,SiH2分子が含まれるビラジカルの最初の分離を表します.
- 構造と結合の調査は,ビラジカルな性質と安定性を確認しました.
結論:
- cAACリガンドはシリコンベースのビラジカルを効果的に安定させ,分子種として分離することを可能にします.
- 化合物1の成功した分離は,反応性シリコン種の安定化において重要な進歩を示しています.
- これらの発見は,シリコンビラジカルの化学と応用の探索のための新しい道を開きます.
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