SIOC English
有机化学
高级检索

有机化学 ›› 1997, Vol. 17 ›› Issue (4): 324-328. 上一篇    下一篇

研究论文

有效碳链长度与链烷烃沸点

曹晨忠;孔纯辉   

  1. 湘潭师范学院化学系;长沙县一中
  • 发布日期:1997-08-25

Effective length of carbon chain and boiling point of paraffinic hydrocarbons

CAO CHENZHONG;KONG CHUNHUI   

  • Published:1997-08-25

被引次数

18

对于碳原子数目为N的链烷烃，我们提出其有效碳链长度N~E=(PT~直~,~N/PT~支~,~N)·N。式中PT~直~,~N和PT~支~,~N分别为直链和支链异构体的分子极化指数。研究表明，链烷烃的沸点Tb(K)与N~E有以下关系：log(1076.575-Tb)=3.034649-5.043171×10^-^2N~E^2^/^3。

关键词: 烷烃, 长链化合物, 沸点, 链长

The effective length of carbon chain (N~E) was calculated by the equation N~E=(PT~S~,~N/PT~B~,~N)·N for the paraffinic hydrocarbon consisting of N carbon atoms, where the PT~S~,~N and PT~B~,~N represent the molecular polarizability index of isomer of straight-chain paraffin and branched-chain paraffin respectively. The result shows that the relationship between the N~E and boiling point Tb(K) of paraffinic hydrocarbons can be expressed by log(1076.575-Tb)=3.034649-5.043171×10^-^2N~E^2^/^3.

Key words: ALKANE, LONG CHAIN COMPOUND, BOILING POINTS, CHAIN LENGTH

中图分类号: