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Report | Regular issue | Vol 24, No. 2, 1986, pp.339-343
Published online, 1st January, 1970
DOI: 10.3987/R-1986-02-0339
Nitrogen Nuclear Magnetic Resonance Spectroscopy of Pyridinium Dicyanomethylids

Kiyoshi Matsumoto,* Takane Uchida, Yukio Ikemi, Hideo Fujita, Kuniyo Aoyama, and Momoyo Asahi

*Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-Nihonmatsu-cho, Sakyo-ku, Kyoto 606-8501, Japan


The 14N and 15N chemical shifts of ylidic nitrogen of substituted pyridinium dicyanomethylids and related compounds have been measured. A linear correlation is obtained between the 13C-SCS and the 15N-SCS of the 4-substituted pyridinium dicyanomethylids. A comparison and/or correlation is made of these values with those of the related molecules such as pyridines and pyridine N-oxides and also by using several different scales of substituent parameters such as σ*, (σI, σR°), and (i, σR+, σR-).