高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (10): 1237.

• 论文 • 上一篇    下一篇

有机试剂结构与性质的研究(X)——偶氮苯衍生物结构与吸收光谱的研究

童沈阳, 曾伟   

  1. 北京大学化学系, 北京, 100871
  • 收稿日期:1991-10-19 修回日期:1992-01-15 出版日期:1992-10-24 发布日期:1992-10-24
  • 通讯作者: 曾伟
  • 基金资助:

    国家自然科学基金

Studies on Structure and Properties of Organic Reagents(Ⅹ)——Study of Structure and Absorption Spectrum of Azobenzene Derivatives

TONG Shen-Yang, ZENG Wei   

  1. Department of Chemistry, Peking University, Beijing, 100871
  • Received:1991-10-19 Revised:1992-01-15 Online:1992-10-24 Published:1992-10-24

摘要: 本文应用PPP-SCF-CI法计算了偶氮苯衍生物的结构,发现偶氮苯衍生物波长最大的吸收峰(相应于电子从基态向第一激发态跃迁)是分子内荷移光谱,这些吸收峰的计算值与实验值完全一致.此外,还根据PPP计算结果研究了取代基对吸收光谱的影响.

关键词: PPP法, 有机试剂, 吸收光谱

Abstract: In order to study the relationship among absorption spectra of organic reagents,the calculation of π-electronic excitation energies of azobenzene derivatives has been carried out by means of PPP-SCF-CI method.The intramolecular charge-transfer character of the first π-π transition was found,Agood agreement was obtained between the observed and calculated values for the first π-π excitation.The effect of substituents on the absorption spectrum was studied on the basis of these calculated results.

Key words: PPP method, Organic reagents, Absorption spectrum

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