## Abstract ^15^N chemical shifts of twenty‐four substituted indoles have been determined in natural abundance (in organic solvents) using Fourier transform NMR. The overall chemical shift range is 27 ppm, with groups in the 2‐, 3‐ and 5‐ring positions showing the largest substituent effects. Subst
15N nuclear magnetic resonance spectroscopy. Natural-abundance 15N spectra of aliphatic oximes
✍ Scribed by Robert E. Botto; Philip W. Westerman; John D. Roberts
- Publisher
- John Wiley and Sons
- Year
- 1978
- Tongue
- English
- Weight
- 560 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
^15^N chemical shifts of the Z and E isomers of twenty‐two ketoximes and fourteen aldoximes have been determined at the natural‐abundance level of ^15^N, using Fourier transform methods. The influences of π delocalization, methyl substituents and solute concentration on the oxime nitrogen shielding have been determined. The ^15^N shifts for oximes of several cycloalkanones have been measured and the influence of ring size on the chemical shifts is discussed.
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