Subcomponent Flexibility Enables Conversion between D4-Symmetric CdII8L8 and T-Symmetric CdII4L4 Assemblies

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• 作者：Jesús Mosquera ; Tanya K. Ronson ; Jonathan R. Nitschke
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：February 17, 2016
• 年：2016
• 卷：138
• 期：6
• 页码：1812-1815
• 全文大小：362K
• ISSN：1520-5126

文摘

A flexible tris-formylpyridine subcomponent A was observed to produce three distinct products following Cd^II-templated self-assembly with different anilines. Two of the products were Cd^II₄L₄ tetrahedra, one with ligands puckered inward, and the other outward. The third product was a Cd^II₈L₈ structure having all mer stereochemistry, contrasting with the fac stereochemistry of the tetrahedra. These three complexes were observed to coexist in solution. The equilibrium between them could be influenced through guest binding and specific interactions between aniline subcomponents, allowing a selected one of the three to predominate under defined conditions.