IR AND PMR STUDIES OF PROTON-TRANSFER IN COMPLEXES OF 4-R-PYRIDINE N-OXIDES WITH TRIFLUOROACETIC-ACID IN SOLUTIONS

被引：24

作者：

BRYCKI, B

DEGASZAFRAN, Z

SZAFRAN, M

机构：

[1] Institute of Chemistry, A. Mickiewicz University

来源：

ADVANCES IN MOLECULAR RELAXATION AND INTERACTION PROCESSES | 1979年 / 15卷 / 01期

关键词：

D O I：

10.1016/0378-4487(79)80037-0

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Infrared and proton magnetic resonance spectra of complexes of 4-R-pyridine N-oxides with trifluoroacetic acid have been investigated in rigorously dry benzene, chlorobenzene, 1,2-dichloroethane and chloroform. The results were correlated with ΔpKa and interpreted in terms of proton transfer effect. 50% proton transfer is found at ΔpKa = 1.68 ±0.05. The solvents used have no influence on 50% proton transfer. Solvent effect on chemical shift is discussed. © 1979.

引用

页码：71 / 79

页数：9

共 57 条

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