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Π_(4)^(4)的超共轭效应。
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 equationIp(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 toX(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 ofΠ_(4)^(4).
作者
孙玉坤
黎乐民
Sun Yukun;Li Lemin(Department of Chemistry,Hebei Normal University,Shijiazhuang;Department of Chemistry,Peking University,Beijing)
出处
《高等学校化学学报》
SCIE
EI
CAS
1984年第2期227-232,共6页
Chemical Journal of Chinese Universities
