The chemical shifts (d) of solvent signals observed for 1 H NMR and 13 C NMR spectra are listed in the following table. The multiplicity is shown in parentheses as 1 for ... AI -- Automatic ...

researchers relied on one-dimensional NMR spectra of NMR active nuclei. These spectra have one frequency axis, and analysis relies upon the relative frequency shifts between chemically inequivalent ...