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[Study on the spectra of NTO and its rubidium salt in aqueous solution]
Shu-Ping Xia1, Man-Cheng Hu, Shi-Yang Gao
1College of Chemistry and Material Science, Shaanxi Normal University, Xi'an 710063, China.
Abstract:
In this paper, the Raman and difference FTIR spectra of NTO crystal, NTO solutions at different pH and saturated aqueous solution of Rb(NTO) x H2O have been studied. The determined structure of crystal suggests that the metal ion with oxygen and nitrogen atoms of [chemical structure see text] C-N, [chemical structure see text] C-NO2, [chemical structure see text] C=O and H2O formed bonds. The highest characterization peaks of Raman and FTIR spectra show that [chemical structure see text] C-NO2, [chemical structure see text] C=O and [chemical structure see text] C-N of NTO- formed week coordination bonds. The vibration spectra of saturation solution basically accord with those of the crystal. The bonds of saturation solution of the coordination compound have not changed. Therefore, the different vibration spectra of the saturation water solution of Rb (NTO) x H2O can be explicated by the formation of the bonds in crystal. The coordination compound formation mechanism of metal ion with NTO in alkali aqueous solution is discussed.
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