The13C NMR, UV and IR absorption spectra of pyridinedicarboxylic acids

Content Provider	Semantic Scholar
Author	Wasylina, Lucyna Kucharska, Edyta Węgliński, Zbigniew Puszko, Aniela
Copyright Year	1999
Abstract	The13C NMR, UV and IR absorption spectra of 2,3-, 2,4-, 2,5-, 2,6-, 3,4-, and 3,5-pyridinedicarboxylic acids were recorded and their spectral parameters were assigned. The influence of electronic properties of the substituents on the direction of the chemical shifts is discussed. The influence of substituents in the molecule on λmax and εmax of the UV-spectral band is disscused. Analizing13C NMR, UV, and IR absorption spectra it was found that there is a disturbance of mutual electronic interaction of substituents by a steric ortho effect. This effect is reflected in paramagnetism of the carboxyl group, the value of the correlation coefficient, deformation C−O stretching bands, and the decrease in the intensity of the CT band.
Starting Page	186
Ending Page	194
Page Count	9
File Format	PDF HTM / HTML
DOI	10.1007/BF02251707
Volume Number	35
Alternate Webpage(s)	https://page-one.springer.com/pdf/preview/10.1007/BF02251707
Alternate Webpage(s)	https://doi.org/10.1007/BF02251707
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article