13C CPMAS NMR spectra of solid proton-exchanging p-substituted benzoylacetones: observation of13C,35,37Cl residual dipolar coupling in the p-chloro derivative
- 1 January 1993
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 16,p. 1253-1254
- https://doi.org/10.1039/c39930001253
Abstract
Residual dipolar coupling to spin-3/2 35,37Cl nuclei appears as a symmetric doublet of 0.69 kHz in the 13C CPMAS NMR spectrum of p-chlorobenzoylacetone at 75.4 MHz, in agreement with theoretical calculations; carbon chemical shifts of a series of p-substituted benzoylacetones undergoing solid proton transfer are also reported, which show tautomeric populations similar to the solution ones.Keywords
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