Issue 29, 2022
From the journal:

RSC Advances

Study on the coordination of cyclopentanocucurbit[5,6]uril with Fe3+, Co2+ and Ni2+ ions†

Jun Zheng,a   Yue Ma,b   Xinan Yanga  and  Peihua Ma ORCID logo *a  

* Corresponding authors

a Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, People's Republic of China
E-mail: phma@gzu.edu.cn

b Guiyang College of Humanities and Science, Guiyang 550025, People's Republic of China

Abstract

This paper reports the coordination of cyclopentanocucurbit[5]uril (CyP5Q[5]) and cyclopentanocucurbit[6]uril (CyP6Q[6]) with Fe(ClO4)3, Co(ClO4)2 and Ni(ClO4)2. Single crystal X-ray diffraction analysis shows the metal ions are directly coordinated with the portal of the cucurbit[n]uril to form a one-dimensional supramolecular chain or independent systems in the CyP5Q[5]@Fe(ClO4)3, CyP5Q[5]@Co(ClO4)2, CyP6Q[6]@Co(ClO4)2 and CyP5Q[5]@Ni(ClO4)2 complexes. In CyP6Q[6]@Fe(ClO4)3, the metal ion is not directly coordinated with the cucurbit[n]uril portal, but after forming Fe(H2O)6, it interacts with the cucurbit[n]uril portal via a hydrogen bond. The CyP6Q[6]@Ni(ClO4)2 complex is quite special; in this system, there are both metal ions directly coordinated with the cucurbit[n]uril portal and free on the outer surface of the cucurbit[n]uril.

Graphical abstract: Study on the coordination of cyclopentanocucurbit[5,6]uril with Fe3+, Co2+ and Ni2+ ions

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Article information

DOI
https://doi.org/10.1039/D2RA02459D
Article type
Paper
Submitted
17 Apr 2022
Accepted
16 Jun 2022
First published
28 Jun 2022
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2022,12, 18736-18745

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Study on the coordination of cyclopentanocucurbit[5,6]uril with Fe3+, Co2+ and Ni2+ ions

J. Zheng, Y. Ma, X. Yang and P. Ma, RSC Adv., 2022, 12, 18736 DOI: 10.1039/D2RA02459D

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