Two-step postsynthetic modifications of a dinuclear Zn(II) coordination compound: Investigating the stability of the coordination chromophore

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• 作者：Zhenbo Ma ; ² ; ³ ; ^{mazhenbo@ustc.edu} ; Shuangbing Han ; ¹ ; ² ; ³ ; ^{shuangbinghan@gmail.com} ; Russell Hopson³ ; Yanhu Wei¹ ; ³ ; Brian Moulton³
• 关键词：Crystal ; Postsynthetic ; DOSY ; Hirshfeld surface ; Coordination chromophore ; Click reaction
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：15 June, 2012
• 卷：388
• 期：Complete
• 页码：135-139
• 文件大小：705 K

摘要

Attempted two-step postsynthetic modifications (Click reaction and recrystallization) of a dinuclear Zn(II) coordination compound Zn₂(OOC-C₆H₄-N₃)₄(quinoline)₂ lead to the formation of a mononuclear Zn(II) compound - Zn(OOC-C₆H₄-C₂HN₃-COOCH₃)₂(quinoline)路DMSO. In this feasibility study, the relatively low stability of the coordination chromophore around Zn(II) in the starting material is evidenced by Hirshfeld surface analysis and results in the transformation of coordination chromophore during the postsynthetic reaction. Diffusion Ordered Spectroscopy NMR experiments confirmed that the intermediate complex Zn(OOC-C₆H₄-C₂HN₃-COOCH₃)₂ formed by Click reaction exists in the coordinated form in the solution phase despite the loss of the neutral ligand-quinoline. The final product Zn(OOC-C₆H₄-C₂HN₃-COOCH₃)₂路(quinoline)路DMSO with a mononuclear crystal structure was formed by recrystallizing the intermediate with presence of quinoline.