A value of 74(+/- 4)degrees was determined from NMR-observed dipolar couplings for the rotational dihedral angle of the monosuccinate anion ill an aprotic liquid-crystal solution of the gauche conformation of tetraoctylammonium monosuccinate. This value is in reasonable agreement with other, somewhat less definitive, evidence gleaned from isotropic vicinal proton-proton couplings of the essentially completely gauche preference of the monosuccinate anion in tert-butyl alcohol and aprotic solvents, Such as DMSO and THF, and quantum computations for the monoanion in THF.