There are three types of easily-accessible information available in NMR spectroscopy:
- Chemical shift, which provides information about the average effective magnetic field (due to nuclear shielding) present at various locations within a molecule.
- Spin-spin coupling (coupling constants and spin multiplicities), which derives from through-bond interactions between spin-active nuclei.
- Signal intensity, measured as the integral of the signal, which derives from the number of equivalent nuclei present in a given environment.
Of course, it is possible to garner additional information via other processes, such as the nuclear Overhauser effect (NOE).