广义α_N指数及其应用——Ⅰ.广义α_N指数及其在中性磷萃取剂萃取Y、Ce、U和Th性能方面的应用

General an Index and Its Application Ⅰ. General all-Index and Its Application in the Extraction of Y, Ce,U, and Th by Neutral Phosphorus Extractancts

首先引进一般有机化合物的广义a_N指数,该指数能分辨有微小结构差别的有机化合物分子。在此基础上,计算了某些中性磷萃取剂的广义a_N指数。并将其与萃取性能进行相关分析,得到了满意的结果。

The general a_N index is established for molecules containing heteroatoms, rings, and multiple bonds. The general a_N index is able to desoribe molecules wish minute differences in strueture and can also reveal the properties of molecules. This theory is successfully applied to the case of neutral phosphorus extractants. Both the molecular polarity and steric effect are characterized by the general a_N index. The relationships between these properties and the distribution ratios for extracting Y, Ce, U, and Th are also shown by the general a_N index.