An experimental study of the 4hJ(31P-31P) coupling constant and the 12C/13C isotope effect on 31P in an iminophosphorane-substituted proton sponge
- 1 January 2002
- journal article
- research article
- Published by Science Reviews 2000 LTD in Journal of Chemical Research
- Vol. 2002 (1) , 34-36
- https://doi.org/10.3184/030823402103170385
Abstract
The 13C NMR spectra of the bromide of the protonated iminophosphorane-substituted sponge 7 were recorded at different fields. Together with the use of 13C satellites of the 31P NMR spectrum, these experiments allow determination of a reasonable set of chemical shifts and coupling constants. The most interesting are a 4h J PP = 1.6 Hz, determined directly from the 31P NMR spectrum, which probably involves the hydrogen bond, and a 2Δ31P(13C) isotope shift of 9 ppb.Keywords
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