Charge-Transfer and Proton-Transfer in the Formation of Molecular Complexes. I. The Complex Isomerization of Some Anilinium Picrates by Melting
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概要
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<I>o</I>-Chloroaniline, <I>m</I>-nitroaniline, 3-nitro-4-methylanilme, and <I>N</I>,<I>N</I>-dimethylamino-<I>p</I>-benzaldehyde form true phenolates with picric acid. However, their electronic and vibrational spectra were found to be drastically modified by melting. The appearance of a new electronic absorption located near the place where the corresponding <I>s</I>-trinitrobenzene complex exhibits the charge-transfer band is noted above the melting point. At the same time, the vibrational bands due to the anilinium ion observed at room temperature are replaced by those due to the aniline. On the basis of these observations, it was concluded that complex isomerization from a true phenolate to a charge-transfer complex takes place by melting in these cases. On the other hand, the spectra of <I>N</I>,<I>N</I>-diethylanilinium and <I>m</I>-chloroanilinium picrates were shown to remain the same below and above the melting points.
- 公益社団法人 日本化学会の論文
著者
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Saito Gunzi
Department Of Chemistry Faculty Of Science Kyoto University
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Matsunaga Yoshio
Department of Chemistry, Faculty of Science, Hokkaido University
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