PMR spectra and electronic structures of the neutral bases and cations of thiazolo [3,2-a] -benzimidazole and its methyl derivatives
โ Scribed by G. G. Dvoryantseva; L. M. Alekseeva; T. N. Ul'yanova; Yu. N. Sheinker; P. M. Kochergin; A. N. Krasovskii
- Book ID
- 112329210
- Publisher
- Springer US
- Year
- 1971
- Tongue
- English
- Weight
- 600 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0009-3122
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๐ SIMILAR VOLUMES
large strong-field increment for 2-CH~ was observed here, and the chemical shift for this carbon atom is 14.5 ppm, whereas it was more than 19.8 ppm in all other cases. A "~ effect" in this case is clearly observed not only for C(s ) but also for C(~) and C(6 ) (Table 3). The substantial dependence
PMR spectra of 1, 2, 5-selenadiazole and its 3-methyl derivative have been obtained. Observed values of long range couplings between 77Se and ring protons together with other features of the spectra such as &rrical shifts and J13~\_1~ are discussed and correlated with selenophene and 1. 2, s-thiadia