Home › Forums › Hyperfine course › electric quadrupole interaction › case studies / symmetry – task 1 › task 2 This topic has 0 replies, 1 voice, and was last updated 1 year, 9 months ago by EliseSmets. Viewing 1 post (of 1 total) Author Posts March 20, 2023 at 10:02 pm #4416 EliseSmetsParticipant Fe-1 : multiple 4-fold rotation axes –> theorem 2: EFG tensor is zero –> theorem 1: rotation axes can be the z-axis of PAS (eta=0) Fe-2a : two 2-fold rotation axes –> theorem 1: can be chosen as z-axis of PAS Fe-2b : 4-fold rotation axis –> rotation axis is z-axis of PAS and eta=0 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