Signs of 19F1H and 19F13C spin-spin coupling constants mainly transmitted through space

The details of two‐dimensional 13C1H correlated spectra have provided information about the relative signs of J(C, F) and J(F, H) for several molecules in which C, F and H are mutually coupled. Unlike signs are found for J(C, F) and J(F, H) when the coupling pathways lie approximately in the plane,...

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Veröffentlicht in:	Magnetic resonance in chemistry 1992-11, Vol.30 (11), p.1047-1050
Hauptverfasser:	Rae, I. D., Weigold, J. A., Contreras, R. H., Yamamoto, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	2D 13C1H correlated spectra Atomic and molecular physics Exact sciences and technology F) and J(F Long-range 19F1H couplings Molecular properties and interactions with photons Nuclear resonance and relaxation Physics Relative signs of J(C Relative signs of J(C, F) and J(F, H)
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Beschreibung
Zusammenfassung:	The details of two‐dimensional 13C1H correlated spectra have provided information about the relative signs of J(C, F) and J(F, H) for several molecules in which C, F and H are mutually coupled. Unlike signs are found for J(C, F) and J(F, H) when the coupling pathways lie approximately in the plane, but serious deviations from planarity can bring about changes in sign of J(F, H) and J(C, F).
ISSN:	0749-1581 1097-458X
DOI:	10.1002/mrc.1260301104