高等学校化学学报 ›› 1982, Vol. 3 ›› Issue (1): 93.

• 论文 • 上一篇    下一篇

用HMO法处理某些1,4-双[β-(4-取代苯基)乙烯基]苯衍生物

薛价猷, 林少凡, 张毓凡   

  1. 南开大学化学系
  • 收稿日期:1980-12-10 出版日期:1982-01-25 发布日期:1982-01-25

THE CALCULATION OF SOME 1,4-BIS [(SUBSTITUTEDPHENYL )-ETHENYL ] BENZENE DERIVATIVES WITH HMO METHOD

Xue Jieyou, Lin Shaofan, Zhang Yufan   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1980-12-10 Online:1982-01-25 Published:1982-01-25

摘要: 我们用HMO法处理了某些1,4-双[β-(4-取代苯基)乙烯基)苯及1,4-双-[β-(4-取代苯基)乙烯基]2,5-二甲氧基苯化合物,求得了π键分子轨道的能量、电荷密度、键序及自由价。另外,最高占有轨道和最低空轨道之间的能差与其电子光谱(紫外光谱及萤光光谱)之间有较好的线性关系。两个系列的电子光谱与Hammett方程的取代基常数的绝对值之间也有较好的线性关系。

Abstract: The charge densities, bond orders, free valences and the energies of n molecular orbitals of some l,4-bis[β-(4-Substituted phenyl) ethenyl] benzene and 1,4-bis [β-( 4-Substituted phenyl ) ethenyl 3-2,5-dimethoxy benzene compounds were calculated with HMOmethod. Arelationship of homologous linearity between the electronic spectra and the energy difference (HOMOand LUMO) is obtained. Besides, it was found that there is a relationship of homologous linearity between the electronic spectra and the absolute values of Hammett' sσp.

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