Nuclear magnetic dipole moment of 209Bi from NMR experiments

We report the 209Bi magnetic moment derived from NMR experiments and first-principles calculated shielding constants of Bi3+ ions in aqueous solutions of Bi(NO3)3 and Bi(ClO4)3 salts. Our values represent an independent confirmation of the 209Bi magnetic moment recently determined by Skripnikov et al. [L. V. Skripnikov et al., Phys. Rev. Lett. 120, 093001 (2018)], which is of utmost importance for the interpretation of Bi82+ ion hyperfine splitting experiments. The accuracy limit of the 209Bi magnetic moment set by the present computational chemistry methods is discussed.