## Abstract 2‐Azetidinones which carry a proton each on C‐3 and C‐4 often pose a problem in the correct assignment of the resonances due to these protons; titanium tetrachloride has been shown to be an effective and reliable n.m.r. shift reagent to differentiate between these two protons on the bas
Lanthanide-Induced Effects in Proton NMR Spectra. VIII. “Scavenging” effects—A problem and a solution
✍ Scribed by B.L Shapiro; M.J Shapiro; A.D Godwin; M.D Johnston Jr.
- Publisher
- Elsevier Science
- Year
- 1972
- Weight
- 233 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0022-2364
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
Dipolar splittings with a quadratic dependence on static magnetic field strength are reported for selected pairs of nuclei in several porphyrins. These splittings are detectable as a result of a slight molecular alignment caused by the interaction of the static magnetic field with the anisotropic ma
## Abstract The variable‐temperature proton nmr spectra of the oligoribonucleotides in the series CpAp__X__ and the series ApGp__X__, __X__ = A, G, C, U, together with the parent dimers CpA and ApG have been measured. A complete analysis of all the nonexchangeable base proton resonances and ribose
## Abstract NMR solvent effects induced by benzene on several __N__‐ and __O__‐alkyl oximes are reported. Both shielding and deshielding effects are observed and are accounted for by the geometry of the solute‐solvent ‘complex’. Good Hammett plots of solvent shifts for various types of protons are
## Abstract The proton nmr spectra of the oligoribonucleotides in the series Cp__X__pG, Ap__X__pG, CpAp__X__pUpG, and ApGp__X__pC (__X__ = A, G, C, and U), together with the reference compounds CpG, ApG, CpApUpG, and ApGpC, have been measured. A complete analysis of all the nonexchangeable base pro
## Abstract Solvent effects on the ^1^H NMR parameters of perhydro‐oxazolo[3,4‒__a__]pyridine, perhydropyrido[1,2‒__c__]‒[1,3]oxazine and perhydrothiazolo[3,4‒__a__]pyridine derivatives are described. Particularly marked are changes in the proton‐proton geminal coupling constants of the NCH~2~O and