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高価な金,プラチナ,またはパラジウム調整複合体のマクロサイクル受容体

Wenqi Liu¹, Allen G Oliver¹, Bradley D Smith¹

¹Department of Chemistry and Biochemistry , University of Notre Dame , 236 Nieuwland Science Hall, Notre Dame , Indiana 46556 , United States.

Journal of the American Chemical Society

|May 23, 2018

まとめ

黄金,プラチナ,パラジウムなどの貴金属複合体を選択的に結合する2つの新しいマクロサイクル受容体があります. この超分子認識は鉱山,リサイクル,医療の分野で応用が進んでいます

科学分野:

超分子化学
協調化学
材料科学

背景:

金 (III),プラチナ (II),パラジウム (II) のアニオン型平面金属複合体は,触媒と医学において重要である.
これらの貴金属複合体の選択的認識と結合は,超分子化学における課題です.

研究の目的:

アニオンの貴金属複合体の選択的封装のための新しいマクロサイクルテトララクタム受容体の設計と合成.
受容体と金属ゲストの間の超分子認識と結合相互作用の方法を調査する.

主な方法:

2つのマクロサイクルテトララクタム受容体の合成
接客複合体の固体構造を決定するX線結晶学.
有機溶剤での溶液状態結合試験 (1:1結合定数)

主要な成果:

マクロサイクリック受容体によるアニオン性金 ((III),プラチナ ((II),およびパラジウム ((II)) コンプレックス (例えば,AuCl4-,AuBr4-,PtCl4-2,Pd2Cl6-2) の選択的封じ込め.
受容体は,金属ゲストとの非共性相互作用のために,アレン π 電子ドナーと水素結合ドナーを持つ事前組織された構造を特徴とする.
固体構造は補完的結合を明らかにし,溶液定数は固体特性に相関する.

結論:

開発されたマクロサイクリック受容体は,貴金属複合体の超分子認識のユニークなモードを示しています.
これらの受容体は,貴金属回収,触媒,ナノ科学,医学における応用の可能性を示しています.
この研究は,金属イオン認識のための高度なホスト-ゲストシステムの設計のための基礎を提供します.

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