標題: NMR study of hetero-association accompanying self-association of 2-hydroxyl-4-methyl-pyridine and 2-pyrrolidone in acetonitrile
作者: Luo, WC
Lin, CC
Lin, JA
Kao, DY
Chen, JS
應用化學系
Department of Applied Chemistry
關鍵字: hetero-association;self-association;dimerization;graphic method;monomer shift;dimer shift
公開日期: 1-十二月-2000
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 [H-2(3)]acetonitrile through hydrogen bonding using high-resolution nuclear magnetic resonance spectroscopy. Dilution shift data for the protons of the NW 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.
URI: http://hdl.handle.net/11536/30106
ISSN: 0009-4536
期刊: JOURNAL OF THE CHINESE CHEMICAL SOCIETY
Volume: 47
Issue: 6
起始頁: 1177
結束頁: 1183
顯示於類別:期刊論文