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題名 | NMR Study of Hetero-Association Accompanying Self-Association of 2-Hydroxyl-4-methyl-pyridine and 2-Pyrrolidone in Acetonitrile |
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作者 | 羅維真; 林啟全; 林祝安; 高大宇; 陳振興; | 書刊名 | Journal of the Chinese Chemical Society |
卷期 | 47:6 2000.12[民89.12] |
頁次 | 頁1177-1183 |
分類號 | 341.393 |
關鍵詞 | 核磁共振; 乙丢; Hetero-association; Self-association; Dimerization; Graphic method; Monomer shift; Dimer shift; |
語文 | 英文(English) |
英文摘要 | This work investigated not only the equilibrium of self-association of 2-pyrrolidone (A) and that of 2-hydroxyl-4-methyl-pyridine (B), but also the hetero-association between A and B in [2H3]acetonitrile through hydrogen bonding using high-resolution nuclear magnetic resonance spectroscopy. Dilution shift data for the protons of the NH group of A and OH group of B were measured over a wide range of temperatures and concentrations. In addition, the monomer shifts, dimer shifts and dimerization constants of self-association and hetero-association were evaluated using a graphic method operating on the dilution chemical shift data. The enthalpy and entropy of dimerization of self-association and hetero-association were also obtained from the van!|t Hoff plot. |
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