摘要
从分子结构出发,通过分析影响沸点的主要结构因素,研究了直链饱和卤代烃沸点的定量规律,提出了下面的经验公式T<sub>b</sub>=133.54n<sup>1/2</sup>+123.49r<sub>x</sub><sup>3/2</sup>-14.292n<sup>1/2</sup>r<sub>x</sub><sup>3/2</sup>-279.
In this paper,we inversigated the Regularity between the boiling points of 1-haloalkanes (RX)and the molecule structure parameters after analysing the structure factors affecting boiling points.An empirical formula was proposed as follows: T_b=133.54n^(1/2)+123.49r_x^(3/2)-14.292n^((1/2)r_x^(3/2))-279.4 Where T_b stands for the boiling points of 1-haloalkanes(RX),n stands for the number of carbon atoms in alkyl R(n=1～20),r_x stands for the covalence redius of X(X=F,Cl,Br,I).The calculated values were close to obscrved values by using the formula.
关键词
直链饱和卤代烃
沸点规律
经验公式
1-haloalkanc
regularity of the boiling points
empirical formula
