## Abstract ^15^N and ^14^N NMR spectra show that there is no valence tautomerism involving the nitro group in nitro derivatives of benzofuroxan systems and that the __N__โoxide function has a fixed position in the furoxan ring. Carbon chemical shifts of molecules with one, two or three furoxan rin
Nitrogen NMR edited by M. Witanowski and G. R. Webb
โ Scribed by Woolfson, M. M.
- Book ID
- 117858703
- Publisher
- International Union of Crystallography
- Year
- 1973
- Weight
- 64 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0567-7408
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract ^15^N Nitrogen screening data are reported for some polycyclic azines and compared with previous results where available. INDO/S parameterized screening calculations for cinnoline and quinazoline help to decide between alternative nitrogen assignments. Nitrogen solvent shifts of several
## Abstract ^15^N NMR studies on some signly labelled sydnones, __N__โacetylsydonimines and their hydrochlorides, as well as those on some sydnonimine hydrochlorides, show that in each case protonation takes place at the exocyclic moiety, \documentclass{article}\pagestyle{empty}\begin{document}$ -
High-precision 14N NMR shielding data are reported for 2-methyl-2-nitrosopropane and its azodioxy dimer in a variety of solvents. A range of about 30 ppm, as a function of solvent, is observed for the nitroso nitrogen atom. This contrasts with the corresponding shielding range for the dimer, which i
## Abstract Solvent effects on the nitrogen NMR shieldings of indolizine and three azaindolizines are presented for a range of thirteen solvents. The results are discussed in terms of hydrogenโbonding an solvent polarity effects. โPyridineโtypeโ nitrogen atoms show a much larger range of solvent ef