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- W2444458889 abstract "Solvent effect on the ultraviolet absorption spectra of 1, 2, 3, 4-substituted 3-pyrazoline-5-thiones (I), and their intermolecule hydrogen bonding with phenols and alcohols were examined. The ultraviolet spectra of I in proton-donating solvents, such as water and alcohols, are much more hypsochromic than those in nonpolar solvents like cyclohexane and benzene. This phenomenon is due to the formation of hydrogen bonding of I with hydrogen of the solvent. This hydrogen bonding power of I is greater than that of antipyrine derivatives and is reverse of the strength of Brφnsted bases." @default.
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- W2444458889 date "1971-01-01" @default.
- W2444458889 modified "2023-09-25" @default.
- W2444458889 title "Analytical Studies on Thiopyrazolone Derivatives. II. : Ultraviolet Absorption Spectra and Hydrogen Bonding Abilities of 1, 2, 3, 4-Substituted-3-pyrazoline-5-thiones" @default.
- W2444458889 doi "https://doi.org/10.1248/yakushi1947.91.3_324" @default.
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