線形二調整シリコン:機能群MSi-MとMSiMを持つ移行金属複合体
Priyabrata Ghana1, Marius I Arz2, Uttam Chakraborty3
1Institute of Inorganic Chemistry , University of Bonn , Gerhard-Domagk-Straße 1 , D-53121 Bonn , Germany.
Journal of the American Chemical Society
|May 8, 2018
まとめ
この研究は,多重結合のシリコン原子を持つ新しいモリブデン-シリコン複合体を導入します. 研究者は,独特のシリリジンとシラレン複合体を合成し,特徴づけ,その構造と電子特性を詳細に説明しました.
科学分野:
- 有機金属化学
- シリコン化学
- モリブデン複合物
背景:
- 移行金属化学における低座標のシリコン種の探査
- 金属複合体内の多重結合シリコンの理解は限られている.
研究 の 目的:
- 多重結合シリコンを備えた前例のないモリブデン複合体を合成し,特徴づけること.
- これらの新しいシリコンを含むモリブデン化合物の構造と電子特性を調査する.
主な方法:
- シリリジン前駆体を含む反応によるモリブデン-シリコン複合体の合成.
- X線 difraktion,NMR,IRスペクトロスコーピー,およびサイクルボルトメトリーを用いた特徴付け.
- 電子局所関数 (ELF),自然結合軌道 (NBO),自然共鳴理論 (NRT) を含む理論分析.
主要な成果:
- ブリッジング金属ラシリジン複合体の分離と構造的決定 [Tp'(CO) 2MoSi-Mo(CO) 2(PMe3) Tp'] (2) は,ほぼ線形的なシリコンの調整である.
- 短 Mo-Si 結合を特徴とする関連するシリリジン複合体の合成 [Tp'(CO) 2MoSi-Tbb] (3).
- コンプレックス2の還元により1,3-ジメタラ-2-シラアレンダイアニオン [Tp'(CO) 2MoSiMo(CO) 2Tp'2- (42-) が形成され,ダブル結合に一致するMo-Si結合長を示している.
結論:
- 多重結合シリコンによる新しいモリブデン複合体の合成と特徴づけに成功した.
- 電子構造と結合に関する洞察を 提供した.
- ダイメタラシラレンダイアニオンの新種を確立し,さらなる反応性研究の可能性を示した.
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