异吲唑硝基取代衍生物的HEI2光电子能谱——-"轨道换向"现象的又一例证 |
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引用本文: | 王建祺,Heilbronner,E..异吲唑硝基取代衍生物的HEI2光电子能谱——-"轨道换向"现象的又一例证[J].化学学报,1983,41(12):1146-1152. |
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作者姓名: | 王建祺 Heilbronner E. |
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作者单位: | 北京工业学院;瑞士巴塞尔大学物理化学研究所 |
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摘 要: | The HeIα PES of indazole (1a), 3-bromoindazole (2a) and their isomeric nitro derivatives 1b-e and 2b-e have been recorded. It has been found that the lowest π^-^1 ionization energies (I1)^m, (I2)^m are moved towards higher energies under the influence of the nitro group, but that there is no significant dependence of the size of the shifts (ΔI1)^m, (ΔI2)^m on the position of the group. The result, which is at variance with the predications derived from a naive perturbation treatment based on the π orbitals of 1a, has been explained as being due to "orbital switching" in the substituted derivatives.
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关 键 词: | 硝基化合物 化学位移 光电子谱法 微扰论 吲唑P |
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