In NMR spectroscopy, CSA is a second-rank tensor property that can lead to broadening of resonance lines or cause shifts in the resonant frequency of a nucleus. This information is invaluable for probing the local electronic environment and molecular orientation. For instance, in solid-state NMR, CSA can be used to differentiate between various crystallographic sites in a catalyst. Understanding CSA allows for the deconvolution of complex spectra, providing detailed structural and electronic information about the catalytic material.
