高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (2): 227.

• 论文 • 上一篇    下一篇

光电子能谱与同系能级线性规律(Ⅲ)——双向延伸体系

孙玉坤1, 黎乐民2   

  1. 1. 河北师范大学化学系;
    2. 北京大学化学系
  • 收稿日期:1982-08-16 出版日期:1984-04-24 发布日期:1984-04-24

PHOTOELECTRON SPECTROSCOPY AND THE LINE-ARITY OF THE HOMOLOGOUS ENERGY FACTOR(Ⅲ)--TWO DIRECTION EXTENDING SYSTEM

Sun Yukun1, Li Lemin2   

  1. 1. Department of Chemistry, Hebei Normal University, Shijiazhuang;
    2. Department of Chemistry, Peking University, Beijing
  • Received:1982-08-16 Online:1984-04-24 Published:1984-04-24

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摘要： 研究了十一个双向延伸体系的四十八组光电子能谱数据,发现它们的各级垂直电离势符合同系能级线性规律,线性相关系数优良率为95.8％,用由光电子能谱得到的有关电离势,讨论了Π44的超共轭效应。

Abstract: In the present investigation we have collected 48 sets of vertical ionization potentials of two direction extending system from UV photo-electron spectroscopy and found they fit the following linear equation Ip(n,k) = a + bX(n,k) where Ip(n,k) is the kth ionization potential of the nth member of the homologous series, a and b are constant, X(n,k) is called the homologous energy factor and is equal to X(n,k)= (2k- 1)/k sin (kπ/2N +1) 60.4 % of the correlation are of the "excellent" grades with correlation factor r≥0.99,and 35.4% of the"good "grades with r≥0.95 and others with r≥0.90.Also we have discussed the hyperconjugative effect of∏44.

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