节点文献
具有不等半高宽DNMR谱的理论计算
Theoretical calculation of DNMR spectra possessing signals with unequal half-height widths
【摘要】 为了计算具有不等半高宽度、非耦合双边交换体系的动态核磁共振(DNMR)谱,我们推导了相应的计算公式,并按此公式计算了N,N-二甲基乙酰胺的一系列DNMR谱。计算谱与不同温度下的实验谱很好地符合。 按照Arrhenius公式和Eyring公式,我们计算了该交换反应的一系列热力学函数;Arrhenius活化能Ea,活化熵△S,活化焓△H++以及活化自由能△G++。
【Abstract】 In order to calculate the dynamic NMR (DNMR) spectra possessing signals with unequal half-height widths the corresponding equation has been derived. According to this equation we have calculated the DNMR spectra of N,N-dimethyl acetamide. The ealculated spectra were in good agreement with the experimental spectra measured at some specific temperatures.From Arrhenius and Eyring equations we calculated the thermodynamic functions of this exchange reaction, i. e. Arrhenius activation energy Ea, the entropy of activar xion △S++, the enthalpy of activation △H++ and the free energy of activation △G++.
- 【文献出处】 核技术 ,Nuclear Techniques , 编辑部邮箱 ,1990年02期
- 【被引频次】1
- 【下载频次】30