A 13 C, 15 N and 77 Se NMR Study of Some Diseleno Sulfonamides
โ Scribed by Bernatowicz, P.; Stefaniak, L.; Kloc, K.; Mhizha, S.; Mlochowski, J.
- Book ID
- 126882763
- Publisher
- Taylor and Francis Group
- Year
- 1998
- Tongue
- English
- Weight
- 161 KB
- Volume
- 136
- Category
- Article
- ISSN
- 1042-6507
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๐ SIMILAR VOLUMES
Numerous areneselenenamides derived from ammonia, primary and secondary amines and two N,N-bis(ary1-se1eno)alkylamines have been studied. The selenenamides bearing an electron-withdrawing substituent on the aromatic moiety are stable. The 'H, 13C and 77Se chemical shifts and some coupling constants
## Abstract ^77^Se and ^13^C chemical shift of 19 1,2,3โselenadiazoles are discussed in terms of substituent effects and conformaโtional behaviour of the molecules. It is shown that the ^77^Se chemical shifts of such compounds are suitable tools for chiral discrimination in diastereomeric compounds
C and 77Se NMR was carried out on dicyclopentadienyl derivatives of Ti, Zr and W with selenium bonded directly to the metal. Although '"C NMR is not sensitive to different substitution, 77Se NMR is valuable and refiects the influence of the different organic substituents and the nature of the metals
## Abstract The ^13^C, ^15^N and ^77^Se NMR data (chemical shifts and coupling constants) of some cycloakenoโ1,2,3โselenadiazoles are presented. Extremely large ^77^Se chemical shifts are found. ^15^N, ^77^Se coupling constants, obtained at natural abundance, are reported for the first time. Strong