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 9 months ago by Himanshu. Viewing 1 post (of 1 total) Author Posts March 19, 2024 at 3:52 am #5560 HimanshuParticipant FeI has three 4-fold rotation axes. The EFG tensor is zero. FeII has one 4-fold and two 2-fold rotation axes. The z-axis can be axis of the 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