Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (06): 1059-1064.doi: 10.3866/PKU.WHXB20090529
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DANG Zheng, SONG Le-Xin, PAN Shu-Zhen. WANG Mang
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Abstract:
We report on the formation of a molecule-ion adduct of β-cyclodextrin (β-CD) with sodium arsenite (SA) both in solid state and in aqueous solution. The adduct was characterized using Fourier transforminfrared spectroscopy, powder X-ray diffraction, differential thermogravimetric analysis, gas chromatography coupled to time-of-flight mass spectrometry, UV-Vis spectroscopy, 1H nuclear magnetic resonance titration and electrospray ionization mass spectroscopy. We found that a weak molecule-ion interaction was responsible for the difference in spectral properties in solid state and in aqueous solution as well as for the difference in thermal decomposition behavior between β-CD, SA and the adduct. The novelty and complexity of this interesting molecule-ion interaction was revealed by a redox reaction based on the data of gas chromatograph coupled to time-of-flight mass spectrometer and by the formation of the 1:1 (molar ratio) supramolecular ion complex, Na+-β-CD, based on its electrospray ionization mass spectrum.
Key words: β-Cyclodextrin, Sodium arsenite, Adduct, Molecule-ion interaction, Inorganic drug
DANG Zheng, SONG Le-Xin, PAN Shu-Zhen, WANG Mang. Preparation, Spectral Properties and Decomposition Behavior of a Novel β-Cyclodextrin and Sodium Arsenite Adduct Formed by Stirring[J].Acta Phys. -Chim. Sin., 2009, 25(06): 1059-1064.
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URL: https://www.whxb.pku.edu.cn/EN/10.3866/PKU.WHXB20090529
https://www.whxb.pku.edu.cn/EN/Y2009/V25/I06/1059
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