希少な9連結Zr/Hf-Oxoクラスターを備えた頑丈なコロールベースの金属有機フレームワーク
Yanming Zhao1,2,3, Shibo Qi4, Zheng Niu2
1School of Chemical Engineering and Technology , Tianjin University , Tianjin 300350 , People's Republic of China.
Journal of the American Chemical Society
|August 22, 2019
まとめ
コロール基の金属有機フレームワーク (MOF) の最初のCorrol-MOF-1とCorrol-MOF-2が報告され,頑丈な構造と高い安定性を提供しています. 鉄を含有するCorrol-MOF-1は,Diels-Alder反応のための効率的な異質な触媒を示しています.
科学分野:
- 協調化学
- 材料科学
- カタリシス
背景:
- コロールは協調化学において重要なリガンドであり,金属カチオンにユニークな電子特性を提供する.
- 望ましいことにもかかわらず,コロールユニットは,高度な機能化のための多孔結晶材料で不足しています.
- 機能的な多孔性材料にカロールを統合する体系的な研究は欠けている.
研究 の 目的:
- コロールベースの新しい金属有機フレームワーク (MOF) を構築する.
- これらの新しいMOFの安定性と触媒活性を調べる.
- 特にディエルス・アルダー反応における異質な触媒の潜在能力を探求する.
主な方法:
- カスタム化されたC2-対称のコロリックトリカルボキシラートリガンドとD3-対称のZr6/Hf6クラスターを用いた2つの堅固なコロールベースのMOFの合成.
- MOFの特徴は,希少な (3,9) 接続されたgfy網構造を示している.
- 触媒試験のためのカチオン鉄コロールMOF (Corrole-MOF-1 ((Fe)) の準備.
主要な成果:
- コロール-MOF-1 (Zr) とコロール-MOF-2 (Hf) の製造に成功し,広範囲のpHで高い化学的安定性を示した.
- MOFは珍しい (3,9) 接続されたgfyトポロジーを示している.
- コロール-MOF-1 (Fe) は [4 + 2] ヘテロ-ダイエルス-アルダー反応の効率的な異質な触媒を証明し,同質的およびポルフィリン性MOF触媒を上回った.
結論:
- 開発されたコロールベースのMOFは,多孔性の材料の設計における重要な進歩を表しています.
- これらのMOFは,優れた安定性とユニークな構造特性を提供します.
- コロール-MOF-1 (Fe) は,特定の有機変異のための非常に効果的な異質な触媒として有望な可能性を示しています.
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