๐”– Bobbio Scriptorium
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Nitrogen NMR edited by M. Witanowski and G. R. Webb

โœ 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

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๐Ÿ“œ SIMILAR VOLUMES


Nitrogen and carbon NMR of some benzofur
โœ M. Witanowski; L. Stefaniak; S. Biernat; G. A. Webb ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 295 KB

## 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__โ€oxide function has a fixed position in the furoxan ring. Carbon chemical shifts of molecules with one, two or three furoxan rin

The assignment of signals in the nitroge
โœ M. Witanowski; L. Stefaniak; G. A. Webb ๐Ÿ“‚ Article ๐Ÿ“… 1981 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 237 KB

## 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

Nitrogen NMR sudies of some 15N labelled
โœ L. Stefaniak; M. Witanowski; B. Kamieล„ski; G. A. Webb ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 213 KB

## Abstract ^15^N NMR studies on some signly labelled sydnones, __N__โ€acetylsydonimines 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}$ -

Solvent Effects on the Nitrogen NMR Shie
โœ M. Witanowski; Z. Biedrzycka; G. A. Webb ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 338 KB ๐Ÿ‘ 2 views

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

Study of solvent effects on the nitrogen
โœ M. Witanowski; W. Siciล„ska; Z. Grabowski; G. A. Webb ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 528 KB

## 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 hydrogenโ€bonding an solvent polarity effects. โ€˜Pyridineโ€typeโ€™ nitrogen atoms show a much larger range of solvent ef