High resolution 13C NMR investigation in the organic conductor : (TMTSF)2ClO4

Abstract
We report the results of 13C NMR magic angle spinning experiments performed on the TMTSF molecule (in solution and in the solid state) and in the organic conductor (TMTSF)2ClO4. This investigation (Knight-shift, T1 and T1ρ) has allowed to resolve all individual sites of the organic molecule. Strong and widely distributed enhancements of the relaxation rate of the nuclear spin on different sites of the molecule suggest a picture where Coulomb correlations play a major role for the sites at the corners of the molecule