1 H and 15 N NMR spectra of 10 complexes exhibiting strong OHN hydrogen bonds formed by 15 N-labeled collidine and different proton donors, partially deuterated in mobile proton sites, have been observed by low-temperature NMR spectroscopy using a low-freezing CDF 3 /CDF 2 Cl mixture as polar aproti
Hydrogen Bond Geometries and Proton Tautomerism of Homoconjugated Anions of Carboxylic Acids Studied via H/D Isotope Effects on 13 C NMR Chemical Shifts
โ Scribed by Guo, Jing; Tolstoy, Peter M.; Koeppe, Benjamin; Golubev, Nikolai S.; Denisov, Gleb S.; Smirnov, Sergei N.; Limbach, Hans-Heinrich
- Book ID
- 127040358
- Publisher
- American Chemical Society
- Year
- 2012
- Tongue
- English
- Weight
- 747 KB
- Volume
- 116
- Category
- Article
- ISSN
- 1089-5639
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Deuterium-induced chemical shift differences on the 13C (DIS) are reported for a series of Schiff bases of salicylaldehydes, l-(phenyliminomethyl)naphthalen-2-ol and 4-chloro-1,7-phenanthrolin-l0-ol. Provided that corrections for the hydrogen donor atom and diamagnetic effects of the surrounding gro
## Abstract The oneโ and twoโbond ^13^C isotope shifts, typically โ1.5 to โ2.5 ppb and โ0.7 ppb respectively, in nonโcyclic aliphatic systems and up to โ4.4 ppb and โ1.0 ppb in glucose cause effects that need to be taken into account in the adaptive NMR spectral libraryโbased quantification of the