テトラキス (di-tert-butylmethylsilyl) ディスタニンとそのアニオンのラジカルであるディスタニン
Tomohide Fukawa1, Vladimir Ya Lee, Masaaki Nakamoto
1Department of Chemistry, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
Journal of the American Chemical Society
|September 24, 2004
まとめ
テトラキス ((di-tert-ブチルメチルシリル) ディスタニンは合成され,最も短い亜鉛亜鉛二重結合を明らかにした. この安定した化合物はスタニレンに分解せず,ユニークなアニオンラジカルを形成します.
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
- マテリアルサイエンス 材料科学
背景:
- ディスタネンは,シリコン安定化化合物で,チン・チンの二重結合を含んでいる.
- アサイクリックディスタネンは,そのユニークな結合と反応性により興味を惹きます.
- 安定性や電子特性を理解することは,新しい材料や触媒の開発に不可欠です.
研究 の 目的:
- 新型アサイクリックディスタネン,テトラキス (Tetracis) ディ-テルト-ブチルメチルシリル) ディスタネン (1) の合成と特徴づけを図る.
- 構造的性質,特に Sn=Sn 結合長と幾何学を調査する.
- 合成されたディスタネンの反応性と電子的振る舞いを,その解離と還元を含む,探求する.
主な方法:
- THFにおけるtBu2MeSiNaとSnCl2-二酸化物の結合反応による合成.
- ディスタネンとそのアニオン基の構造的決定のためのX線結晶学.
- 炭素四塩化物 (CCl4) との反応により,探査機が解離する.
- 1電子をカリウムで還元し,ESR光譜法による特徴付け.
主要な成果:
- テトラキス (((di-tert-ブチルメチルシリル) ディスタニン (1) は,濃緑色の結晶として成功して合成され,分離されました.
- X線解析により,ほぼ平らで,高度に歪んだ幾何学を持つ,非循環的ディスタネンにおける最短のSn=Sn二重結合 (2.6683(10) A) が明らかになった.
- 化合物1は,CCl4との反応でスタニレンに解離せず,固体および溶液における安定性を示した.
- 1電子の還元により,X線結晶学とESR光譜学によって特徴づけられた,安定したディスタネンアニオンラジカル (3) が得られました.
結論:
- 合成されたテトラキス ((di-tert-butylmethylsilyl) distanneneは,最も短い Sn=Sn 結合を含む例外的な構造的特徴を示しています.
- この化合物は,スタニレネへの解離に抵抗し,著しい安定性を示しています.
- 安定したディスタネンアニオンラジカルの形成と特徴は,重アルケンの類型とそれらのラジカル化学の洞察を提供します.
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