強い,選択的なアニオン結合は,分子ノードとリンクの中央空洞内に存在します
Jean-François Ayme1, Jonathon E Beves1, Christopher J Campbell1
1School of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom.
Journal of the American Chemical Society
|July 8, 2015
まとめ
化学者は,ハリドアニオンを強く結合する複雑な分子ノードとカタネーンを作り出した. これらの合成宿主体は,非常に高い結合親和性を示し,塩化物イオンに対する銀塩の結合親和に匹敵する.
科学分野:
- 超分子化学 超分子化学
- 有機化学 オーガニック・ケミストリー
- マテリアルサイエンス 材料科学
背景:
- 超分子化学は,非共性相互作用によって結合された複雑な化学システムの研究に焦点を当てています.
- 特定のアニオンに対する高い結合親和性を有する合成宿主の開発は,センシングと分離におけるアプリケーションにとって極めて重要です.
研究 の 目的:
- 新しいトポロジカルに複雑な分子,特に分子ペンタフォイルノットと [2]catenanesを合成し,特徴づける.
- これらの複雑な分子構造のアニオン結合能力を調査する.
主な方法:
- 円形のFe(II) 二重ヘリケート構造物の合成.
- 分子ペンタフォイルノートと [2]カテナンの構造の構築.
- アセトニトリルで定位とスペクトロスコピーなどの技術を用いたアニオン結合の研究.
主要な成果:
- 分子ペンタフォイルノートと二重/三重に絡み合った [2]ケイテナンの成功合成.
- これらの宿主の中央腔内におけるハリドアニオンの強い結合が実証されました.
- クロリドの極度に高い結合定数 (3.6 ± 0.2) ×10 M−10 M−1) を達成し,銀塩と同等である.
結論:
- トポロジ的に複雑な宿主分子は,顕著なアニオン結合親和性を示すことができます.
- 電気静的およびCH···X(-) 水素結合の相互作用は,観測された強い結合の鍵です.
- これらの発見は,アニオン認識のための高度な合成受容体の設計のための道を開く.
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