Application of 13C NMR spectroscopy in the assignment of 1H NMR signals of nonequivalent SCH3 groups.
Hooper, Donald L.
Neaves, W. M. (William Maynard), 1954-
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The SCH3 groups of 3- and/or 5 alkyl substituted 2,4,6-trithiaheptanes have almost identical chemical shifts in both 1H and 13C nmr spectra. A combination of gated decoupling and single frequency off-resonance decoupling, followed by the construction of graphs of the type proposed by Pachler, allows the assignment of the 1H nmr signals.