β Scribed by Thomas J Simpson
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract ^13^C NMR chemical shifts and ^13^Cο£Ώ^13^C couplings for six specifically labeled [^13^C] azobenzenes are reported. Coupling magnitudes depend on the position of labeling and the nature of the substituents.
13C NMR chemical shifts were measured in for Γuorocarbonyl compounds. Sulfonic DMSO-d 6 derivatives display 4J(C,F) coupling constants for carbonyl groups which are also obtained from non-sulfonic derivatives when they are recorded in acidic solution.
The "C chemical shifts of 22 methylated ribonucleosides and deoxyribonucleosides have been measured and assigned. The chemical s h i f t ditierences between methylated and unmodified nucleosides are correlated with their characteristic modifications of structure. The significance of the chemical shi
## Abstract The complete assignment of the ^13^C NMR spectra of a series of biologically active quipazines substituted at position Cβ5, Cβ6 or Cβ7 of the quinoline moiety provides evidence for a strong conjugation between the Οβelectron cloud of the pyridine ring and the nitrogen lone pair of the p
The REDOR and CPMAS techniques are applied for measuring 13C-15N dipolar coupling constants in glycine. It is shown that the selective CP or SPECIFIC CP technique removes the coherent evolution of the spin system under homonuclear 13C-13C J couplings. While the large coupling constant (approximately