17O chemical shifts were measured in 40 enamines activated in the b-position by CxO, COO, NO 2 , SO and groups. Data for the oxygen-containing series of o-hydroxyacyl aromatics are also included for com-SO 2 parison. Intramolecular hydrogen bonding in the enamines is discussed in terms of the accept
Dependence of one-bond deuterium isotope shifts in 13C NMR on CH bond lengths for substituted and unsubstituted aromatic compounds
✍ Scribed by Yasuki Nakashima; Takashi Teranishi; Toshiya Suzuki; Tyo Sone; Kensuke Takahashi
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 319 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
One‐bond deuterium‐induced isotope shifts of ^13^C NMR (^1^Δ) for 106 sp^2^‐hybridized carbons are discussed in terms of CH bond lengths. ^1^Δ correlates linearly with the related CH bond length calculated by the MNDO MO method by the equation ^1^Δ(ppb)=8350 r~CH~ (Å) – 8824.
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