基于分子结构的两种最基本的特性 原子间键联距离和连接关系 ,提出了分子距离 连接性矢量(简称距连矢量 ,VMDC) ,以其表征化合物的分子结构 ,并对含一至十个碳原子饱和烷烃共 150个分子的沸点这一重要的物理性质进行了定量结构性质相关关系 (QSPR)研究 ,结果表明 ,新的分子距连矢量具有结构选择性高和性质相关性好的特点 ,而且计算较简便 ,值得推广使用 Based on the two most basic properties of molecular structure, such as the bonding distance and connection between atoms, a molecular distance connectivity vector (VMDC) was proposed to characterize the molecular structure of the compound. Quantitative Structure-Property Relationship (QSPR) studies on the important physical properties of a total of 150 molecules of saturated alkanes have been carried out. The results show that the new molecules have the characteristics of high structural selectivity and good correlation with the properties of the continuous vector, and Calculated more convenient, it is worth promoting