波谱学杂志 ›› 2005, Vol. 22 ›› Issue (2): 181-186.

• 研究论文 • 上一篇    下一篇

一般醛和甲酸羰基17O-NMR化学位移的研究

  

  1. 陕西科技大学 化学化工学院应用化学研究所,陕西 咸阳 712081
  • 收稿日期:2004-12-24 修回日期:2005-03-08 出版日期:2005-06-05 发布日期:2005-06-05
  • 基金资助:

    陕西省自然科学基金资助项目(2003B17).

A Method for Calculating 17O-NMR Chemical Shifts of Carbonyls of Aldehydes and Formic Acid

  1. Research Institute of Applied Chemistry, Shanxi University of Science and Technology, Xianyang 712081, China
  • Received:2004-12-24 Revised:2005-03-08 Online:2005-06-05 Published:2005-06-05
  • Supported by:

    陕西省自然科学基金资助项目(2003B17).

摘要:

提出了计算一般醛和甲酸羰基17O-NMR化学位移的公式: δcal=615.0+Δα,通过线性回归法确定了21种取代基参数.经回归检验表明该公式计算结果置信度为99.5%,一般醛和甲酸羰基17O化学位移计算值与实验值的偏差Δδ全部在5.0以内.

关键词: 17O-NMR, 化学位移, 取代基效应, 回归分析, 最小二乘法, 醛, 甲酸, 羰基

Abstract:

This paper presents an equation: δcal=615.0+Δα for calculating 17O-NMR chemical shifts of carbonyls of aldehydes and derivatives of formic acid. Twenty-one substituent parameters for the equation were obtained by linear least square regression analysis. The validity of the equation was checked by 32 aldehydes and derivatives of formic acid. A confidence limit of 99.5% was obtained and the calculating errors for all compounds tested were less than 5.0 (relative errors 0.5%).

Key words: 17O-NMR, chemical shift, substituent effect, least square regression analysis, aldehyde, formic acid, carbonyl

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