Abstract
The 13CH satellite spectrum of p-difluorobenzene has been observed at natural abundance, and an exact analysis of this seven-spin system has been performed, including the isotope effect on the chemical shifts. The directly bonded 13CF coupling has been determined from the 13CF satellite spectrum. In addition, high resolution spectra of the proton and fluorine patterns have been obtained, and the dependence of the fine structure in these patterns on the NMR parameters is discussed. The results are compared with those previously obtained for the other symmetrical p-dihalobenzenes.
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