An NHC silver() macrometallocycle: synthesis, structure and selective recognition of iodide anions

A bis-benzimidazolium salt with oligoether-linker LH 2 ·(PF 6 ) 2 and its 13-membered N-heterocyclic carbene silver( i ) crown ether 1 have been synthesized and characterized. The coordination geometry of the silver( i ) ion of 1 is nearly linear with a C(7)-Ag(1)-C(23) bond angle of 179.6(1)°. In t...

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Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (15), p.12256-12262
Main Authors: Liu, Qing-Xiang, Chen, Jun-Ren, Sun, Xiao-Feng, Zhao, Xiao-Jun, Zhao, Zhi-Xiang, Cai, Kang-Qing
Format: Article
Language:English
Subjects:
Crown ethers
Crystals
Fluorescence
Iodides
Recognition
Stacking
Synthesis
Titration
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Summary:A bis-benzimidazolium salt with oligoether-linker LH 2 ·(PF 6 ) 2 and its 13-membered N-heterocyclic carbene silver( i ) crown ether 1 have been synthesized and characterized. The coordination geometry of the silver( i ) ion of 1 is nearly linear with a C(7)-Ag(1)-C(23) bond angle of 179.6(1)°. In the crystal packing of 1 , a 2D supramolecular layer is formed by π-π stacking interactions from benzimidazole rings. In particular, the selective recognition of I − using 1 as a receptor was studied on the basis of fluorescence and UV/vis spectroscopic titrations. An NHC silver( i ) crown ether 1 has been synthesized, and the recognition of I − using 1 as a receptor was studied.
ISSN:2046-2069
2046-2069
DOI:10.1039/c5ra23814e