聚核黄金の濃縮および溶解誘発可逆構造変形および組立 (I) 硫化物複合体
Liang-Liang Yan1, Liao-Yuan Yao1, Vivian Wing-Wah Yam1
1Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China.
Journal of the American Chemical Society
|June 23, 2020
まとめ
研究者は多核黄金 ((I) 硫化物複合体を合成した. 小さなリガンドの変化は,濃度と溶媒によって制御可能な十二核と六核の黄金のクラスター間の可逆変換を誘導した.
科学分野:
- 無機化学
- 超分子化学
- 材料科学
背景:
- 多核金 ((I) 硫化物複合体は,そのユニークな構造および電子特性のために興味があります.
- リガンド構成は,金属複合体の組立と構造を決定する上で重要な役割を果たします.
研究 の 目的:
- ビス・ディフェニル・フォスフィノ・アミンのリガンドを用いた新型多核黄金 (I) 硫化物複合体を合成し,特徴づけること.
- 複合体の形成における微妙な結合体構成の変化の影響を調査する.
- 濃度と溶解に依存する逆転的なクラスター対クラスター変換を調査する.
主な方法:
- 硫黄複合体の合成と特徴付け
- 陽子核磁共鳴 (1H NMR) スペクトロスコーピーを用いて変換を監視する.
- フォスファー-31核磁気共振 (31P{1H} NMR) スペクトロスコーピーを用いたモニタリング.
- 溶液状態の分析のための紫外線吸収スペクトロスコーピー.
- 構造の解明のための高解像度の電離スプレー質量スペクトロメトリー (HR-ESI-MS).
主要な成果:
- 多核金 ((I) スルフィド複合体とビス ((ディフェニルフォスフィノ) アミンリガンドの成功合成.
- 軽微なリガンドの形状的変化に基づいた独特の複合形成の実証.
- デデカヌクレアとヘクサヌクレア黄金複合体間の前例のない可逆的なクラスターからクラスターへの変換の観測.
- 溶液濃度と溶解によって影響される変換の可逆性の確認
結論:
- リガンド構成は,多核黄金 (I) スルフィド複合体の自己組成において重要な決定因子である.
- 黄金 (I) 硫化物複合体の構造調節のための簡単なアプローチが開発された.
- 外部刺激 (濃度,溶解) は,これらの金複合体の超分子変換を可逆的に制御することができます.
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