サブコンポーネントの柔軟性は,D4-シンメトリックCd(II) 8L8とT-シンメトリックCd(II) 4L4アセンブリ間の変換を可能にします
Jesús Mosquera1, Tanya K Ronson1, Jonathan R Nitschke1
1Department of Chemistry, University of Cambridge , Lensfield Road, Cambridge, CB2 1EW, United Kingdom.
Journal of the American Chemical Society
|January 28, 2016
まとめ
ピリジン基の成分がカドミウムと自己組み合わさって,3つの異なる調整複合体を形成する. 溶液中のバランスは,ゲスト結合とアニリン相互作用によって制御される.
科学分野:
- 協調化学
- 超分子化学
- 材料科学
背景:
- 自己組み立ては 複雑な分子構造を 構築するための強力な方法です
- メタルテンプレート合成は,協調化合物の形成を正確に制御します.
- 自己組み立ての結果に影響を与える要因を理解することは,機能的な材料の設計に不可欠です.
研究 の 目的:
- カドミウム (II) イオンによる柔軟なトリス・フォーミルピリジン・リガンドの自己組み立て行動を調査する.
- 異なる条件下で形成される異なる協調複合体を特徴付ける.
- 自己組み立てのバランスに対するゲスト結合とコンポーネントの相互作用の影響を調べる.
主な方法:
- カドミウム (II) テンプレートによる自己組立反応.
- 結果の調整複合体の構造的特徴 (例えば,X線結晶学).
- 溶液状態分析により,異なる構造の共存と均衡を決定する.
主要な成果:
- 単一のピリジン前駆体と多様なアニリンから3つの異なるカドミウム (II) 調整複合体の形成.
- 2つのCd (II) 4L4四面体構造が内側と外側にひび割れしたリガンドと特定された.
- メアステレオ化学を持つCd (II) 8L8構造が観察され,四面体のフェアステレオ化学と対照的であった.
- 溶液中の3つの複合体の共存が確認された.
- ゲスト結合とアニリン特異の相互作用による均衡の制御の実証
結論:
- 柔軟なトリス・フォーミルピリジン・リガンドは,カドミウムによる多様な超分子構造の形成を可能にします.
- ステレオ化学と構造的複雑性 (四面体と八面体) は,自己組み立て条件によって影響を受けます.
- 異なる構造の間の観察された均衡は選択的にシフトされ,反応性のある材料の可能性を提供します.
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