Electronic Spectra and Hydrogen Bonding. I. Phenol and Naphthols
Electronic Spectra and Hydrogen Bonding. I. Phenol and Naphthols
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电子光谱和氢键。
DOI：
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发表时间：
1961
期刊：
影响因子：
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通讯作者：
Satoshi Suzuki
中科院分区：
文献类型：
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作者：
H. Baba;Satoshi Suzuki
本文研究了氢键对苯酚、α-萘酚和β-萘酚电子吸收光谱的影响，特别是电子跃迁的性质与氢键形成行为之间的关系。在不同浓度的二氧六环存在下，在异辛烷溶液中获得低至2000 A的光谱。通过对观察到的光谱进行分析，确定了氢键的平衡常数和氢键键合物种的光谱。给出了溶质分子基态和激发态的氢键能。实验结果清楚地表明，氢键对电子光谱的影响随跃迁的不同而明显不同。根据有关跃迁的性质，频移和强度变化的幅度甚至符号都不同。结果表明，α萘酚在47 000 cm−1处的跃迁在形成α萘酚后被移向更高的频率。
The effect of hydrogen bonding on the electronic absorption spectra of phenol, α naphthol, and β naphthol has been investigated with particular attention to the relation between the nature of electronic transitions and their behavior in hydrogen bond formation. The spectra were obtained down to 2000 A in isooctane solution in the presence of varying concentrations of dioxane. From the analysis of the observed spectra, the equilibrium constants for the hydrogen bonds and the spectra of the hydrogen‐bonded species were determined. The hydrogen bond energies are given for the ground and excited states of the solute molecules. The experimental results clearly indicate that effects of hydrogen bonding on electronic spectra differ markedly with transitions. Both the frequency shifts and the intensity changes differ in magnitude and even in sign according to the properties of the transitions concerned. It is shown that the transition at 47 000 cm−1 of α naphthol is displaced to higher frequencies upon formation ...