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化学学报
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化学学报 ›› 1987, Vol. 45 ›› Issue (1): 77-79. 上一篇    下一篇

研究论文

邻硝基乙酰苯胺衍生物的XPS振起伴峰及其价带谱的研究

王殿勋;笪有仙;王立本;徐广智;唐有祺   

  1. 中国科学院化学研究所;北京大学化学系
  • 发布日期:1987-01-15

Studies on XPS shake-up and valence band spectra of o-nitro acetanilide derivatives

WANG DIANXUN;DA YOUXIAN;WANG LIBEN;XU GUANGZHI;TANG YOUQI   

  • Published:1987-01-15

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549

研究了一组邻硝基乙酰苯胺衍生物的X射线光电子能谱(XPS).观察到硝基的N1s光电子谱有明显分裂,可认为是N1s振起伴峰的反映,而且苯环上的取代基对该振起伴峰强度有影响,按照Pignataro等关于振起伴峰与主峰的能量分离以及分子内电荷转移有关的观点,计算了振起伴峰与主峰的面积比.结果表明,峰间距与面积比的趋势一致.因此二者都可作为分子内电荷转移的粗略估计.

关键词: 硝基化合物, Ｘ射线光电子谱法, 能带结构, 电荷转移, 价带, 乙醛酰胺

The studies on X-ray photoelectron spectroscopic shakeup and valence band spectra of o-nitroacetanilide derivatives I (R = H, 2-Me, 3-Me, 4-cyano, 4-MeO, 3-Cl, 3-Br, 4-Br) have been reported. The results show that the splitting of N 1s photoelectron peaks of the nitro group may be related to the intramol. charge-transfer effect between donor and acceptor within the same mol., and the magnitude of intramol. charge-transfer can be estimated by the distance of splitting of N 1s of nitro group or by the relative area ratio of the splitting peaks.

Key words: NITRO COMPOUNDS, X-RAY PHOTOELECTRON SPECTROMETRY, BAND STRUCTURES, CHARGE TRANSFER, VALENCE BANDS, ACETANILIDE

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