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本文研究了19种对称二取代芳基汞和二(β-萘基)汞的紫外吸收光谱,与二苯汞的λ_(max)(E)比较,各对称二取代苯汞的λ_(max)(E)均有红移;与相应的取代苯基氯化汞的λ_(max)(E)比较,对称二取代苯汞的λ_(max)(E)有更大红移.说明两个苯环通过汞原子的空p轨道可相互共轭.由简单分子轨道理论计算所得λ_(max)(E)与实验值相符合.
In this paper, the UV absorption spectra of 19 symmetrical di-substituted arylmercury and two (β-naphthyl) mercury were compared with λ max (E) of diphenylmercury. The λ max of each symmetric di- (E) are redshifted, and λ max (E) of the symmetrically disubstituted phenylmercury has a larger redshift than the λ max (E) of the corresponding substituted phenylmercuric chloride, indicating that two benzene rings The empty p-orbitals that pass through the mercury atom can be conjugate to each other, and λ max (E) calculated from the simple molecular orbital theory agrees well with the experimental data.