| 用19F NMR参比积分法测Ba2+与18-冠-6络合物的稳定常数 |
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| 引用本文： | 毛希安,徐广智,沈其丰,鲁晓明,刘军.用19F NMR参比积分法测Ba2+与18-冠-6络合物的稳定常数[J].波谱学杂志,1986,3(4):377-380. |
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| 作者姓名： | 毛希安 徐广智 沈其丰 鲁晓明 刘军 |
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| 作者单位： | 1.中国科学院化学研究所, 北京;2.北京农业大学 |
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| 摘 要： | 提出了一种间接的但十分简单的方法测定Ba2+与18-冠-6的络合平衡常数。在不同浓度的18-冠-6水溶液中,分别加入难溶盐BaF2。使其饱和,然后对各溶液进行19F NMR定量测定。根据络合平衡和难溶盐的溶解平衡,确定了Ba2+与18-冠-6的络合平衡常数。
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| 收稿时间： | 1985-11-08 |
A NOVEL 19F NMR APPROACH TO MEASURE THE FORMATION CONSTANT OF Ba2+ COMPLEX WITH 18-CROWN-6 |
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| Mao Xian,Xu Guangzhi,Shen Qifeng,Lu Xiaoming,Liu Jun.A NOVEL 19F NMR APPROACH TO MEASURE THE FORMATION CONSTANT OF Ba2+ COMPLEX WITH 18-CROWN-6[J].Chinese Journal of Magnetic Resonance,1986,3(4):377-380. |
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| Authors: | Mao Xian Xu Guangzhi Shen Qifeng Lu Xiaoming Liu Jun |
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| Institution: | 1.Institute of Chemistry, Academia Sinica, Beijing;2.Beijing Adricultrural University |
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| Abstract: | An indirect, but quite simple NMR method for measuring the formation constant of Ba2+ complex with 18-crown-6 has been developed. External referencing of intensities has been applied to measure the 19F intensities in saturated BaF2 solutions in the presence or absence of the ligand substance.The formation constant pf Ba2+ complex with 18-crown-6 has been determined by this method. |
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