摘要
本文报道了确定定位效应的一种简单方法。用G表示定位基中α-原子的族数,用■表示第一类原子的平均族数,当G>■时,取代基为邻、对位定位基,当G<■时为间位定位基。比较G与■的大小,就很容易确定定位基的定位效应,其结果与实验及电负性计算结果一致。
This paper presents a simple method to determine the Orientation effect, of substituting groups on the aromatic rings. With G as the group number of the α-atom in a substituting group and ■ as the average group number of the first kind of atoms, it is found that when G>■, the substituting group is O-or p-director and when G<■, it is a m-one. Comparing G with ■, Orientation effect of substituting group is easily determined, the resuet of which agrees with the experiment result and electronegative caleulation.
出处
《西北大学学报（自然科学版）》
CAS
CSCD
1992年第2期173-176,共4页
Journal of Northwest University（Natural Science Edition）
关键词
芳香族
化合物
定位效应
取代基
Aromatic compunds
Orientation effect
Electronegativity.
