摘要
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^(-2)N_E^(2/3)。
The effective length of carbon chain (NE) was calculated by the equation NE= (PTS,N/ PTB,N)·N for the paraffinic hydrocarbon consisting of N carbon atoms, where the PTS,N and PTB,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 NE and boiling point Tb(K) of paraffinic hydrocarbons can be expressed by log(1076. 575 - Tb) = 3. 034649 - 5. 043171 × 10-2
出处
《有机化学》
SCIE
CAS
CSCD
北大核心
1997年第4期324-328,共5页
Chinese Journal of Organic Chemistry
关键词
烷烃
沸点
有效碳链长度
链烷烃
paraffin hydrocarbon, boiling point, effective length of carbon chain
