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有机化学
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有机化学 ›› 1998, Vol. 18 ›› Issue (4): 360-364. 上一篇    下一篇

研究论文

有效碳链长度与脂肪醇的沸点

李志良;曹晨忠   

  1. 湖南大学化学化工学院;湘潭师范学院化学系
  • 发布日期:1998-08-25

Effective length of carbon chain and boiling point of fatty alcohols

LI ZHILIANG;CAO CHENZHONG   

  • Published:1998-08-25

被引次数

25

脂肪醇沸点(b.p.)变化规律可用下述关系式表示:ln(800.386-T~b)=6.64919-2.94828×10^-^2N~E~C~C+0.150955ΔPEI。式中N~E~C~C为醇中烷基的有效碳链长度, ΔPEI是具有相同碳原子数目的支链烷基与直链烷基的极化效应指数的差值, 它表示羟基对醇的沸点的影响。

关键词: 湖南省教委基金, 脂肪醇, 极化效应, 机械工业部基金, 链长, 指数, 沸点, 链烷基

The boiling point (b.p.) change rule of fatty alcohols can be modelled and quantified by following QSPR equation ln(800.386-T~b)=6.64919-2.94828×10^-^2N~E+0.150955ΔPEI, where the N~E is the effective length of carbon chain of alkyl group in the alcohol molcule. The ΔPEI is the polarizability effect index difference between the corresponding branched and normal alkyl isomers containing the same carbon atom number, which expressed the effect of hydroxyl group on the boiling point of alcohols.

Key words: ALIPHATIC ALCHOHOLS, EXPONENT, CHAIN LENGTH, ALKYL GROUPS, BOILING POINTS, POLARIZATION EFFECT

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