リガンドベースの多電子還元による高スピン[Fe3]クラスターの組立
Davide Toniolo1, Rosario Scopelliti1, Ivica Zivkovic2
1Insititut des Sciences et Ingénierie Chimiques, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Journal of the American Chemical Society
|April 7, 2020
まとめ
独特のマクロサイクルリガンドを備えた新しい鉄 (II) クラスターは,二酸化炭素を炭素酸に効率的に還元することを可能にします. この発見は,CO2利用と磁気結合の研究に新しい経路を提供します.
科学分野:
- 協調化学
- 材料科学
- カタリシス
背景:
- サロフェンリガンドを含む鉄 (II) 複合体は,高度な材料の前駆体である.
- マクロサイクルのリガンドは,金属の協調性のためにユニークな構造と電子特性を提供します.
- 効率的なCO2削減は,持続可能な化学における重要な課題です.
研究 の 目的:
- 新しい六核と三核の鉄を合成する.
- 磁気結合の性質を調査する
- 二酸化炭素の削減におけるこれらの複合体の可能性を調査する.
主な方法:
- リガンドベースの還元による鉄の1段階合成.
- その結果生じる六核複合体と三核複合体の構造的特徴
- 二酸化炭素削減における触媒活動の評価
主要な成果:
- 六核 [Na12Fe6 ((トリス・サイクロ・サロフェン) 2 ((THF) 14) ] (1-THF) と三核 [Na6Fe3 ((トリス・サイクロ・サロフェン) ((py) 9) (1-py) Fe ((II)) クラスターを成功裏に組み立てました.
- トリスサイクロサロフェンリガンドは,3つのFe (II) センターを効果的に結合し,強力な磁気結合を促進します.
- これらの鉄のクラスターを使用して二酸化炭素を炭酸塩に選択的に減少させました.
結論:
- Tris-cyclo-salophen リガンドは,調節可能な磁性を持つ多核鉄 (II) コンプレックスを作成するのに適しています.
- これらの新しい鉄のクラスターは,CO2を有価な炭素酸性製品に変換するための有望な触媒活性を示しています.
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