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分子ペンタフォイルノードの協調化学
Liang Zhang1,2, Alexander J Stephens2, Jean-François Lemonnier2
1School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , China.
Journal of the American Chemical Society
|February 12, 2019
まとめ
研究者は,Zn (II) 伝達法を使用して新しい金属化分子ペンタフォイルノートを合成し,Co (II),Ni (II),Cu (II) ノートへのアクセスを可能にしました. これらの構造は,中央空洞内のユニークな二球塩化物結合を示しています.
科学分野:
- 超分子化学
- 協調化学
- ノットされたリガンド設計
背景:
- レーン型円状ヘリケートは,典型的にはFe (II) と特異的なNi (II) /Zn (II) 塩に限定される.
- 複合的な分子構造を 合成するのは困難です
- 結びついたリガンドは,従来の方法では利用できない新しい調整複合体を作るための経路を提供します.
研究 の 目的:
- 多種多様な移行金属で金属化されたペンタフォイルノートを合成するためのトランスメタレーション戦略を開発する.
- これらの新しい結び付いた複合体の構造的特徴と調整行動を調査する.
- 金属のノードの中央の空洞内のアニオンの二次球の調整を探求する.
主な方法:
- Zn (II) ペンタフォイルノードの合成に続いて,Co (II),Ni (II) とCu (II) 塩で伝達する.
- 質量スペクトロメトリー,NMRスペクトロスコピー (Zn複合体) およびX線結晶学を用いた特徴付け.
- アセトニトリルにおける同熱滴定カロリメトリによる塩化物結合の決定.
主要な成果:
- Co (II),Ni (II) とCu (II) の五核結の合成に成功し,高収量 (≥85%) を伝送した.
- 構造の解明はペンタフォイルノードの構造を確認し,塩化イオンの第2球の調整を明らかにした.
- 金属イオンとリガンドの相互作用の影響で,塩化物の結合親和度は3つの大きさで変化した.
結論:
- ノットされたリガンドは,様々な金属イオンを持つ複雑な金属上分子構造にアクセスするための多用途のプラットフォームを提供します.
- 合成されたペンタフォイルノードは,第2球の相互作用を通じてユニークなアニオン結合能力を発揮します.
- この研究は,アクセシブルな結びついた協調複合体の範囲を拡大し,宿主-ゲスト化学におけるその可能性を強調しています.
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