アルミニウムとアルミニウムの二重結合を持つ安定した中性化合物
Prasenjit Bag1, Amelie Porzelt1, Philipp J Altmann1
1Department of Chemistry, Catalysis Research Center and Institute of Silicon Chemistry, Technische Universität München , Lichtenbergstraße 4, 85748 Garching bei München, Germany.
Journal of the American Chemical Society
|September 13, 2017
まとめ
研究 者 たち は 安定 し た 中性 アルミニウム 化合物 を 合成 し まし た.アルミニウム と アルミニウム の 双重 結合 (AlAl) が あり,これ まで の 報告 の 中 で 最も 短い 結合 です. この突破は アルミニウムの化学的性質とその潜在的応用に関する 新たな理解の道を開きます
科学分野:
- 無機化学
- 有機金属化学
- 材料科学
背景:
- アルケーンに類似したホモ核多重結合中性アルミニウム化合物は,数十年にわたって合成標的に挑戦してきました.
- 安定したアルミニウム-アルミニウム多重結合の合成は,無機および有機金属化学の進歩に不可欠である.
研究 の 目的:
- アルミニウムとアルミニウムの二重結合を備えた安定した中性化合物の分離と特徴を報告する.
- この新しいダイアルミニウム種の構造,結合,反応性を調査する.
主な方法:
- N-ヘテロサイクリックカルベンのリガンドを用いた標的化合物の合成.
- 構造の決定のためのX線結晶学とスペクトル分析.
- 電子構造と結合分析のための密度関数理論 (DFT) の計算.
- エチレンやフェニルアセチレンなどの不飽和有機分子による反応性研究
主要な成果:
- 安定した中性化合物をトランス平面のダイアルミニウムで分離する.
- 短 Al-Al 結合の長さは 2.3943 ((16)) Å で,分子ダイアルミニウムの種で報告された最短である.
- AlAl結合の反応性を示すエチレンとフェニルアセチレンとの [2+2]サイクル添加反応の観察.
- DFTの計算では,AlAlのダブルボンドの存在が確認されました.
結論:
- この研究では,AlAl二重結合を持つ安定した中性ダイアルミニウム化合物の合成と特徴づけが成功しました.
- 短いAl-Al結合長と観察された反応性は,二重結合の性質の強力な証拠を提供します.
- この研究は,アルミニウム化学における多重結合の分野における重要な進歩を表しています.
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