| 硼氧酸盐^11BNMR波谱学研究 |
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| 引用本文： | 李军,李武.硼氧酸盐^11BNMR波谱学研究[J].盐湖研究,1995,3(4):72-80. |
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| 作者姓名： | 李军 李武 |
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| 作者单位： | 中国科学院盐湖研究所 |
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| 摘 要： | 系统地总结和讨论了固体硼氧酸盐１１ＢＭＡＳＮＭＲ和硼氧酸盐水溶液１１ＢＮＭＲ波谱学研究结果。对于固体硼氧酸盐１１ＢＭＡＳＮＭＲ谱．虽然可以从中定量计算ＢＯ３与ＢＯ４比值，但因为１１Ｂ化学位移变化小，很难将配位多面体与它们的配位环境相联系，用其作为表征固体硼氧酸盐尚缺少特征性。而对于硼氧酸盐水溶液１１ＢＮＭＲ谱，由于在ＮＭＲ谱仪时间规模下一些硼氧酸盐阴离子中不同化学位置上Ｂ核交换速率影响，在１１ＢＮＭＲ波谱上没有观察到信号。实践证明，溶液１１ＢＮＭＲ波谱与Ｒａｍａｎ光谱的联合使用，将是研究水溶液中硼氧酸盐阴离子结合最直接和有力的手段。
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| 关 键 词： | ~（11）BNMR，硼氧酸盐，水溶液 |
￣(11)B NMR Spectroscopy of Borates |
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| Li Jun,Li Wu and Gao Shiyang.￣(11)B NMR Spectroscopy of Borates[J].Journal of Salt Lake Research,1995,3(4):72-80. |
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| Authors: | Li Jun Li Wu and Gao Shiyang |
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| Abstract: | B NMR spectroscopic studies of solid and aqueous solution of borates were sumarized and discussed. The BO3: BO4 ratio can be determined quantitivedly from 11B MAS NMR spectra of borate crystal,but the small variation of the 11B chemical shifts does not allow a more detailed linkage of the coordination polyhedra and their environments. The characteriza-tion of borate crystal stucture by only use of 11B MAS NMR is less sufficient. For the reasn of exchange rate of boron nuclear between the different chemical positions on time scale limi-tion,the 11B NMR signals of some polyborate anions in aqueous solution were not detect-ed. The combination of solution 11B NMR and Raman spectroscopy will be the most direc-tive and best approach to the study of existing forms of polyborate anions in aqueous solu-tion,according to the results and our experiences. |
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| Keywords: | ￣(11)B NMR Spectra Borates Aqueous solution |
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