Use of INDOR in a Four-Spin 19F Spectrum for the Assignment of Lines and Relative Signs of Coupling Constants
- 15 July 1966
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 45 (2), 609-613
- https://doi.org/10.1063/1.1727616
Abstract
The NMR spectra of the mixed erythro and threo isomers of trans‐CFClBrCFBrCF=CFCl were obtained. The assignment of lines and the relative signs of the coupling constants were determined by the INDOR 19F–19F double‐resonance method, using a systematic procedure suitable for this nonsymmetrical nearly first‐order four‐spin system. Three of the six coupling constants have signs opposite to the other three. Numerical values of shifts and coupling constants are given, as well as higher‐order corrections.Keywords
This publication has 17 references indexed in Scilit:
- Time-Sharing Modulation at 200 kc Applied to Broad and Narrow Line NMR for Base-Line StabilityReview of Scientific Instruments, 1965
- Use of the Nuclear Overhauser Effect in the Analysis of High-Resolution Nuclear Magnetic Resonance SpectraThe Journal of Chemical Physics, 1963
- Chemical Applications of Nuclear Magnetic Double Resonance.Chemical Reviews, 1963
- Frequency-Swept and Proton-Stabilized NMR Spectrometer for all Nuclei Using a Frequency SynthesizerReview of Scientific Instruments, 1963
- On the Signs of Ch and Hh Coupling ConstantsJournal of the American Chemical Society, 1962
- Comments on the Signs of Proton Coupling ConstantsJournal of the American Chemical Society, 1962
- Opposite Relative Signs of Geminal and Vicinal Fluorine-Fluorine N.M.R. Coupling Constants in a Saturated Fluorocarbon by Double ResonanceJournal of the American Chemical Society, 1962
- The relative signs of N.M.R. spin coupling constants from double irradiation experimentsMolecular Physics, 1961
- Spin decoupling in high resolution proton magnetic resonanceMolecular Physics, 1960
- NUCLEAR MAGNETIC RESONANCE SPECTRA. HINDERED ROTATION AND MOLECULAR ASYMMETRY1Journal of the American Chemical Society, 1957