| DNMR 研究金属烯烃内质子交换的动力学行为 |
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| 引用本文： | 张贵荣,戴立益,陆嘉星. DNMR 研究金属烯烃内质子交换的动力学行为[J]. 华东师范大学学报(自然科学版), 2003, 2003(2): 46-53 |
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| 作者姓名： | 张贵荣 戴立益 陆嘉星 |
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| 作者单位： | 1. 华东师范大学化学系,上海,200062
2. 美国大河谷州立大学,Allendale,MI49401,美国 |
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| 摘 要： | 该文用完全线形分析法、磁化强度迁移法和自选锁定技术等三种具体的DNMR法对含有不同取代基的金属烯烃有机化合物中因碳碳键转动引起的分子内质子的化学交换的动力学行为进行了较为详细的研究。结果表明，测得的化学交换的速率常数是合理的。它们满足Eyring 和Ar-rehenuius 关系式；由此获得的化学交换的活化能参数和活化自由能的变化与化合物中的取代基的Hammett 常数6存在很好的一致关系。
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| 关 键 词： | 线形拟合 磁化强度 自旋锁定 DNMR 活化能 化学交换 线形拟合 磁化强度 自旋锁定 DNMR 活化能 化学交换 |
| 文章编号： | 1000-5641(2003)02-0046-08 |
| 收稿时间： | 2002-05-09 |
| 修稿时间： | 2002-05-01 |
Studies of the Relationship between Proton Chemical Exchange and Substituent Electronic Effects in Some Metal-Olefin with DNMR |
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| Stephen Matchett. Studies of the Relationship between Proton Chemical Exchange and Substituent Electronic Effects in Some Metal-Olefin with DNMR[J]. Journal of East China Normal University(Natural Science), 2003, 2003(2): 46-53 |
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| Authors: | Stephen Matchett |
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| Affiliation: | 1 Department of Chemistry, East China Normal University, Shanghai 200062, China2 Grand Valley State University, Allendale, MI49401,USA |
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| Abstract: | The proton chemical exchanges, created by the rotation of carbon - carbon bond in some Metal-Olefins, were examined with three methods of Dynamic Nuclear Magnetic Resonance. They are Complete Line-shape Analysis, Magnetization Transfer and Spin - Lock. The rate constants of these chemical exchange comply with Eyring or Arrehenuius equation. The activation parameters of chemical exchange have same trends with the Hammett constant of substituents in the Metal-Olefins studied. |
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| Keywords: | complete line-shape analysis magnetization transfer spin-lock DNMR chemical exchange |
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