𝔖 Bobbio Scriptorium
✦   LIBER   ✦

15N NMR spectroscopy of some azines

✍ Scribed by L. Stefaniak; John D. Roberts; M. Witanowski; G. A. Webb


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
451 KB
Volume
22
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


Quantitative 15N NMR spectroscopy
✍ George C. Levy; T. Pehk; P. R. Srinivasan πŸ“‚ Article πŸ“… 1980 πŸ› John Wiley and Sons 🌐 English βš– 410 KB

## Abstract Line intensities in ^15^N NMR spectra are strongly influenced by spin‐lattice and spin–spin relaxation times, relaxation mechanisms and experimental conditions. Special care has to be taken in using ^15^N spectra for quantitative purposes. Quantitative aspects are discussed for the ^15^

Characterization of biguanides by 15N NM
✍ B. Clement; U. Girreser πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 82 KB πŸ‘ 2 views

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

A 15N NMR investigation of some azolopyr
✍ L. Stefaniak; John D. Roberts; M. Witanowski; B. T. Hamdi; G. A. Webb πŸ“‚ Article πŸ“… 1984 πŸ› John Wiley and Sons 🌐 English βš– 421 KB

N NMR chemical shift data are presented for 14 azolopyridines, together with the results of INDO/S-SOS calculations of nitrogen shieldings. Previous ' " N NMR results for some of these compounds are reinterpreted. The ' " N data and their assignments are shown to be reliable for the indolizine nitro

A 15N NMR study of some azoles
✍ L. Stefaniak; John D. Roberts; M. Witanowski; G. A. Webb πŸ“‚ Article πŸ“… 1984 πŸ› John Wiley and Sons 🌐 English βš– 334 KB

3 NMR data are reported for 42 szoles, taken mostly at a standard concentration and in a common solvent (0.5 M dimethyl sulfoxide with a 0.01 M increment of Cr(acac), for each nitrogen atom present). Signal assignments were assisted by comparison witb ' " N line widths, the use of zJ(15N'H) coupling

15N-NMR Spectroscopy, 15. The Structure
✍ Hull, William E. ;Kricheldorf, Hans R. πŸ“‚ Article πŸ“… 1980 πŸ› John Wiley and Sons 🌐 English βš– 398 KB πŸ‘ 1 views

## Abstract The natural abundance ^15^N‐NMR spectra of streptomycin and dihydrostreptomycin in aqueous solution at pH 5 show conclusively that the aldehyde group of streptomycin does not react with the methylamino or guanidino groups internally to form a four‐ring structure. ^13^C‐NMR data provide