The Berry Pseudorotation in PF5
This activity makes use of Jmol animations created by Prof. Marion Cass at Carleton College to illustrate the Berry Pseudorotation in trigonal bipyramidal molecules such as PF5. Students explore the animations and answer a series of questions that lead to a description of this intramolecular motion that exchanges equatorial and axial atoms in trigonal bipyramidal molecules.