NMR of 15N15N in nematic phases
โ Scribed by E.E. Burnell; C.A. De Lance
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 280 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
## Abstract Line intensities in ^15^N NMR spectra are strongly influenced by spinโlattice and spinโspin 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^
## Abstract A natural abundance ^15^N NMR study was carried out on a series of 1โ and 2โmonoโ and 1,5โ and 2,5โdisubstituted tetrazoles in different media. An erroneous assignment given in the literature for 2,5โdisubstituted tetrazoles was corrected using MNDO molecular orbital calculations and th
## Abstract The ^15^N NMR spectra of ฮฑโ, ฮฒโ, ฮณโ and ฮดโcarboline and a series of methyl, dihydro and tetrahydro derivatives are reported.
15N NMR spccua of ni1ro.xide.s in solutions have been smdied for Ihe lirst rime. The hli constams for II& nilrogen atoms 01 nirrone and imine groups (a?) and also Tar nitrogen atoms 01 luncrional groups in posiCon 4 of imidazoline niwoxides have been drlermined. The influence 01 structural parameter
## Abstract The natural abundance ^15^NโNMR 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 fourโring structure. ^13^CโNMR data provide