Effects of HPO₄^2− and SCN^− on the hydrogen bond network of water: femtosecond OHD-RIKES and FTIR measurements

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• 作者：Mengqi Hou ; Anchi Yu and Rong Lu
• 刊名：Journal of Raman Spectroscopy
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：48
• 期：1
• 页码：108-112
• 全文大小：363K
• ISSN：1097-4555

文摘

The influence of an ion on the hydrogen bond (HB) structure of water is of potential interest in various aspects. Herein, we studied the effects of HPO₄^2− and SCN^− on the HB network of water in their aqueous solutions by using both femtosecond optical heterodyne-detected Raman-induced Kerr effect spectroscopy (fs OHD-RIKES) and Fourier transform infrared spectroscopy (FTIR) spectroscopy. We found that both the amplitude of the 180 cm^−1 HB stretching band of water in the fs OHD-RIKES fast Fourier-transformed spectrum and the amplitude of the 3290 cm^−1 HB-related stretching band of water in the FTIR spectrum are obviously enhanced in the high-concentrated K₂HPO₄ solution, suggesting that HPO₄^2− has the ability to make the HB of water in its aqueous solution. On the contrary, SCN^− has the ability to break the HB of water in its aqueous solution. Copyright