N.M.R. spectra of theXnAA′ Xn′type
- 1 January 1966
- journal article
- research article
- Published by Taylor & Francis in Molecular Physics
- Vol. 10 (5), 437-449
- https://doi.org/10.1080/00268976600100561
Abstract
The method described previously for the calculation of the X spectrum for spin systems of of the XnAA′Xn′ type is extended by means of magnetic equivalence factoring to cases in which the long-range coupling constant Jx is non-zero. This coupling is treated as a first-order perturbation to the energy levels obtained when Jx =0, and it is found that Jx may be measured directly from the separations between easily identified lines in the spectrum. A detailed account of the X 3 AA′X 3′ system is given, and the N.M.R. spectrum of fluoro-N,N′-dimethyl-1,3,2,4-diazadiphosphetidine is analysed. The spectral parameters obtained are discussed. A computer programme which calculates the spectra of systems involving magnetic equivalence is used to examine the validity of the approximations in the method.Keywords
This publication has 13 references indexed in Scilit:
- Phosphorus-Fluorine Chemistry. XIII. The Adduct of Nitrosyl Fluoride with Phenyltetrafluorophosphorane. New FluorophosphatesInorganic Chemistry, 1965
- COMMENTS ON N.M.R. SPECTRA OF THE XnAA′Xn′ TYPECanadian Journal of Chemistry, 1964
- Phosphonitrilic derivatives and related compoundsQuarterly Reviews, Chemical Society, 1964
- Homonuclear Decoupling: P31–P31The Journal of Chemical Physics, 1963
- Stereochemistry of Phosphorus(V) FluoridesInorganic Chemistry, 1963
- 264. The nuclear magnetic resonance spectra of triphosphonitrilic 1,1-difluoride 3,3,5,5-tetrachlorideJournal of the Chemical Society, 1961
- The analysis of complex nuclear magnetic resonance spectraMolecular Physics, 1960
- The Analysis of Nuclear Magnetic Resonance Spectra.Chemical Reviews, 1960
- Correlation of Rates of Intramolecular Tunneling Processes, with Application to Some Group V CompoundsThe Journal of Chemical Physics, 1960
- Effect of chemical shift and J -coupling on nuclear resonance line-shapeProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1954