Fundamentals of Molecular Symmetry (Series in Chemical Physics) Philip R. Bunker, Per Jensen Molecular symmetry is an easily applied tool for understanding and predicting many of the properties of molecules. Traditionally, students are taught molecular symmetry using point groups derived from the equilibrium geometry of the molecule. However, the true basis for molecular symmetry is not geometrical symmetry, and this book shows how to set up symmetry groups for molecules using more fundamental ideas. It is no more difficult than using molecular geometry, and one obtains Molecular Symmetry (MS) groups. Point group symmetry is derived by approximation form MS group symmetry. The approach taken gives a balanced account of both types of symmetry group. Usually the point group is only useful for isolated, non-rotating molecules, executing small amplitude vibrations in isolated electronic states. However, for the chemical physicist or physical chemist who wishes to go beyond these limitations, the MS group is nearly always required. An introductory description of molecular spectroscopy and quantum mechanics is given in order that the book be self-contained in describing how molecular symmetry is to be understood and used. The book is suitable for both undergraduates and research students in molecular science.