波谱学杂志 ›› 2006, Vol. 23 ›› Issue (2): 225-240.

• 4 • 上一篇    下一篇

脂肪胺类化合物氨基15N NMR 化学位移规律的研究

  

  1. 1. 陕西科技大学应用化学研究所,陕西 咸阳,712081;2.温州大学浙江省皮革重点实验室,浙江 温州,325027
  • 收稿日期:2005-08-24 修回日期:2005-10-22 出版日期:2006-06-05 发布日期:2006-06-05
  • 基金资助:

    陕西省自然科学基金资助项目(2003B17).

Calculation of 15N NMR Chemical Shifts of Amino Groups in Aliphatic Anilines

  1. 1.Institute of Applied Chemistry, Shaanxi University of Science and Technology, Xianyang 712081, China; 
    2.Zhejiang Provincial Key Laboratory of Leather Engineering, Wenzhou University, Wenzhou 325027, China
  • Received:2005-08-24 Revised:2005-10-22 Online:2006-06-05 Published:2006-06-05
  • Supported by:

    陕西省自然科学基金资助项目(2003B17).

摘要:

提出了计算脂肪胺类化合物的15N NMR化学位移的经验公式:δcal15N)=-380.2+ΣΔα+ΣΔβ+ΣΔγ+ΣΔδC,结合最小二乘法通过线性回归得到了11种取代基参数,计算结果以133种化合物的133个15N NMR化学位移数据为样本点进行回归检验,置信度为99.5 %,约有94.7 %的15N NMR化学位移计算值的计算误差小于5.0(相对误差小于0.5 %).

关键词: 15N NMR, 化学位移,  取代基效应, 脂肪胺, 氨基

Abstract:

This paper provides an equation: δcal15N)=-380.2+ΣΔα+ΣΔβ+ΣΔγ+ΣΔδC  for calculation of 15N chemical shifts of substituted aliphatic amines. Eleven substituent parameters were obtained by linear least square regression analysis. The calculated results were checked regressively by 133 15N NMR chemical shifts of 133 substituted aliphatic amines. The confidence limit was 99.5 % and the calculating errors for about 94.7 % of the compounds were less than δ 5 (with relative errors of 0.5 %).

Key words: 15N NMR, chemical shift, substituent effect, aliphatic amines, amino group

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