| 含Cr (Ⅲ)溶液中配位水质子的1H NMR研究 |
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| 引用本文： | 单志华,刘其则.含Cr (Ⅲ)溶液中配位水质子的1H NMR研究[J].波谱学杂志,1993,10(3):303-308. |
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| 作者姓名： | 单志华 刘其则 |
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| 作者单位： | 成都科技大学, 成都 610065 |
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| 摘 要： | 本文用1H NMR对水合Cr(Ⅲ)络离子中配位水和质子交换速率进行研究。在溶液pH为0~3.17范围测得质子的平均寿命约为10-5S。在pH为0~0.76范围质子交换反应动力学为一、二级混合过程。pH为0.76~1.6范围表现为一级过程。在Cr(Ⅲ)-H2O-Gly系统中,实验得出配位水质子的活动性减小。
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| 关 键 词： | 水合络离子 交换速率 平均寿命 反应动力学 核磁共振 |
| 收稿时间： | 1992-03-02 |
THE STUDY OF 1H NMR ON THE PROTONS IN SOLUTION CONTAINING Cr(Ⅲ) |
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| Shan Zhihua Liu Qizhe Zu Zhenhe and He Youjie.THE STUDY OF 1H NMR ON THE PROTONS IN SOLUTION CONTAINING Cr(Ⅲ)[J].Chinese Journal of Magnetic Resonance,1993,10(3):303-308. |
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| Authors: | Shan Zhihua Liu Qizhe Zu Zhenhe and He Youjie |
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| Institution: | Chengdu University of Sci. & Tech., Chengdu 610065 |
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| Abstract: | A study of the exchange process between the protons in a hydrated Cr(Ⅲ) ion and bulk was made with 1H NMR. In the region of pH=0-3.17, the average lifetime of the protons in hydration sphere is of 10s order. There is a dynamic exchange process of protons with a mixture of first and second-order in pH=0-0.76 and only first order in pH=0.76-1.6. In system of Cr(Ⅲ)-H2O-Gly, it was found that the protons in hydration sphere have activity weaken. |
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| Keywords: | Hydrated Cr (Ⅲ) ion Exchange rate Average lifetime Reaction dynamics NMR |
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