## Abstract The ^13^C chemical shifts of several alkyl and phenyl substituted pyrylium perchlorates, together with related pyridine and pyridinium salts, are reported. The shifts in the isoelectronic series benzene, pyridine, pyrylium cation correlate well with charge densities calculated by INDO M
The preparation and 1H n.m.r. spectra of some N-methylpurines and related compounds
✍ Scribed by Barlin, GB; Fenn, MD
- Book ID
- 111898934
- Publisher
- Commonwealth Scientific and Industrial Research Organisation Publishing
- Year
- 1983
- Tongue
- English
- Weight
- 224 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0004-9425
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Recently Denney and Relles (1) have shown, using proton n.m.r. spectroscopy, that tetraalkoxyphosphonium salts are
## Abstract ^1^H n.m.r. spectra of __N__‐phenylmaleimide have been investigated in isotropic as well as nematic phases; the chemical shifts, the direct dipolar and the indirect spin–spin coupling constants have been determined. The direct dipolar coupling constants are consistent with rapidly inter
## Abstract Carbon‐13 n.m.r. spectra of 3‐hydroxy‐4‐sulpho‐2‐naphthoic, 3‐hydroxy‐5‐sulpho‐2‐naphthoic, 3‐hydroxy‐7‐sulpho‐2‐naphthoic, 5‐sulphosalicylic, 3‐hydroxy‐5,7‐disulpho‐2‐naphthoic, 1‐hydroxy‐4,7‐disulpho‐2‐naphthoic, and 3,5‐disulphosalicylic acids were recorded with and without proton no