| Autor: |
Vasic, V. M., Golobocanin, D. D., Perisic-Janjic, N., Lazarevic, M., Klisareva, Lj. |
| Zdroj: |
Spectroscopy Letters; June 1996, Vol. 29 Issue: 4 p727-738, 12p |
| Abstrakt: |
The protonation behavior at 25°C in water and in aqueous sulfuric acid solutions of some substituted α-(p-R-benzamidomethyl)phenyl hydrazines (R=H, CH3, Cl, Br) was investigated by UV spectrophotometry. The absorption spectra in sulfuric acid solutions were analyzed by the method of multivariate analysis. The premonition constants of hydrazine (pK1) and amide (pK2) moieties were determined; pK2 values were calculated from the reconstituted absorption spectra by Cox - Yates method. Dependence of pK2 on Hammett's a constants was discussed. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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