Ring currents have played a crucial role in modern chemistry, but they have been analyzzd and discussed almost entirely in terms of their effect upon proton nmr chemical shifts. 2,3 The applica,ion of carbon magnetic resonance spectroscopy to this area has received relatively little attention.
Ring-current effects on carbon-13 chemical shifts of SP-hybridized carbons in cyclophadiynes
✍ Scribed by Takahiro Kaneda; Taichi Inoue; Yoshitaka Yasufuku; Soichi Misumi
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- French
- Weight
- 117 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract Carbon‐13 chemical shifts of fourteen __para__‐substituted benzylbenzenes have been determined. The relative substituent chemical shifts (SCS) of the methylene carbons and the aromatic ring carbons (C‐4, C‐1′ and C‐4′) correlated well with the Hammett substituent effects using the dual
## Abstract ^13^C NMR spectra of six epimeric substituted 4‐hydroxypiperidines and two corresponding piperidines were recorded. Substituent parameters for equatorial methyl, __gem__‐dimethyl, equatorial hydroxy and axial hydroxy groups were calculated from the ^13^C chemical shifts of these compoun
## Abstract Carbon‐13 NMR spectral data for a series of symmetrical 2,6‐disubstituted adamantanes (O, CH~2~, CH~3~, OH, OCOCH~3~) are presented. The substituent effects on ^13^C chemical shifts are additive, except for carbons 2 and 6 in 2,6‐adamantanedione. The non‐additivity of the substituent