Nitroxydes—LXXVI: Couplages a longue distance dans les nitroxydes azatricycliques. etude par rpe et rmn. conformation du groupement nitroxyde

Complete determination of all proton hyperfine splitting constants in magnitude and sign, and their specific assignment in two stable rigid nitroxides are presented. Long range γ-splitting has been calculated by an MO method (INDO approximation) and by a modification of a valence bond calculation. The results are consistent with a non-planar and rapidly inverting NO group.