The 'H and 13C resonances of 3-aryl-2-oxazolidinones and 3-aryl-2-thiazolidinethiones have been examined. The conformational isomers of restricted rotation about the aryl C-N bond could not be detected for both of the nuclei. The additive shift parameters, measured for carbon chemical shifts, are fo
Characterization of alkyl- and aryl-mercuric hydrides by NMR spectroscopy
β Scribed by Kwetakat, Klaus; Kitching, William
- Book ID
- 118245498
- Publisher
- The Royal Society of Chemistry
- Year
- 1994
- Tongue
- English
- Weight
- 339 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0022-4936
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract ^15^N NMR chemical shifts of 2βarylβ1,3,4βoxadiazoles were assigned on the basis of the ^1^Hβ^15^N HMBC experiment. Chemical shifts of the nitrogen and carbon atoms in the oxadiazole ring correlate with the Hammett Οβconstants of substituents in the aryl ring (__r__^2^ β₯ 0.966 for N ato
The monoprotonated biguanides phenformin hydrochloride, buformin hydrochloride and metformin hydrochloride were investigated by 15 N NMR spectroscopy. The structure of all hydrochlorides is best described by a 1,3-diazabutadienic skeleton with three amino groups and its corresponding mesomeric forms