Home › Forums › Hyperfine course › electric quadrupole interaction › case studies / symmetry – task 1 › Fe4N This topic has 0 replies, 1 voice, and was last updated 1 month ago by elien_vanclemen. Viewing 1 post (of 1 total) Author Posts March 17, 2025 at 11:57 am #6438 elien_vanclemenParticipant FeI: 3 times 4-fold, so EFG-tensor is zero according to theorem 2 FeII: 3 times 2-fold, so the z-axis of the PAS can be chosen along one of these 2-folds. Eta is non-zero. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In