Synthesis of two tetra-azolium salts and the recognition performance for guests

One open tetra-benzimidazolium salt ( 1 ) and one cyclic tetra-imidazolium salt ( 2 ) based on tetramethylbenzene were synthesized and characterized. The single crystal structure of 1 was determined by X-ray diffraction. The recognition performance of compounds 1 and 2 for guests ( 1 for o -phenylen...

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Veröffentlicht in:New journal of chemistry 2022-11, Vol.46 (46), p.2218-22116
Hauptverfasser: Zhao, Zhi-Xiang, Hu, Lin-Hai, Yu, Shao-Cong, Liu, Qing-Xiang
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Hu, Lin-Hai
Yu, Shao-Cong
Liu, Qing-Xiang
description One open tetra-benzimidazolium salt ( 1 ) and one cyclic tetra-imidazolium salt ( 2 ) based on tetramethylbenzene were synthesized and characterized. The single crystal structure of 1 was determined by X-ray diffraction. The recognition performance of compounds 1 and 2 for guests ( 1 for o -phenylenediamine (OPD) and 2 for F − ) was investigated via fluorescent spectra, UV/vis spectra, 1 H NMR, HRMS and IR spectra. In particular, a remarkable color change (from colorless to pale brown) was observed in the recognition process of 2 for F − , which indicated that this recognition can not only be carried out by using an instrument but also by the naked eye, and this had great convenience in practice. Two tetra-azolium salts 1 and 2 were synthesized and characterized, and their selective recognition of guests ( o -phenylenediamine and F − ) was investigated.
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source Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection
subjects Crystal structure
Fluorescence
Infrared spectroscopy
NMR
Nuclear magnetic resonance
Phenylenediamine
Recognition
Single crystals
Spectra
title Synthesis of two tetra-azolium salts and the recognition performance for guests
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