Carbon‐13 chemical shift anisotropies of solid amino acids

Abstract

Abstract An approach to spinning sideband (SSB) separation of protonated and non‐protonated carbons in slow spinning conditions via dipolar dephasing is proposed. This method offers two features: SSB spectral simplification, which greatly reduces the overlaps encountered in a usual SSB spectrum, and spectral distinction of overlapped resonances for protonated and non‐protonated carbons. The 13 C chemical shift anisotropies of the 20 amino acids as polycrystalline powdered solids were completely measured with the SSB intensity analyses as an application of the suggested approach.