期刊
JOURNAL OF CHEMICAL RESEARCH
卷 45, 期 5-6, 页码 608-614出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1747519820978588
关键词
antioxidant; crystal structure; fluorescence; silver(I) complex; supramolecular interactions
The new silver(I) complex [Ag-2(mbbp)(2)](pic)(2)•DMF•CH3OH, featuring a unique molecular structure and supramolecular network, displays good fluorescence properties and excellent antioxidant activity.
A new silver(I) complex of the type [Ag-2(mbbp)(2)](pic)(2)center dot DMF center dot CH3OH [mbbp = 2,6-bis(N-methylbenzimidazol-2-yl)pyridine] is synthesized and analyzed using a range of spectroscopic and crystallographic techniques. This compound contains cationic Ag-2(mbbp)(2) dimers, in which the crossed eight-shaped structure is formed by two mbbp ligands bridging two silver(I) centers and Ag-Ag bonds. Two-dimensional supramolecular networks of the silver(I) complex are connected by pi center dot center dot center dot pi interactions and hydrogen bonds. Hirshfeld analyses are performed to support the aforementioned intermolecular interactions. The effect of pi center dot center dot center dot pi stacking interactions on the fluorescence properties of the complex is investigated. Cyclic voltammetry indicates two irreversible redox processes. In addition, an antioxidant assay in vitro demonstrates that the silver(I) complex displays excellent scavenging activity toward hydroxyl radicals.
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