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3-Nitrofurazans with different substituents at position 4 were studied by 1H, 13C, and 14N NMR spectroscopy. A correlation between chemical shifts (CS) in the 13C NMR spectra of furazans and benzene with similar substituents was revealed. Increments for a series of new substituents were determined. The 13C and 14N CS values presented can be used as a reliable set of reference data.
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