Symmetry in chemical structures and reactions

AbstractSymmetry is analyzed at the atomic level (periodic system, chemical bonding, hybridization), at the molecular level (polyhedral organic molecules and their rearrangement products; isomerism and Polya's theorem; Jahn-Teller effects) and at the supramolecular level (reaction graphs for rearrangements and automerizations; repeating sequences in polymer chains; conservation of orbital symmetry in chemical reactions). A few excursions into mathematics involve solid angles, heuristics of (3, γ)-cages, and visualization of symmetry operations for graphs in three- and four-dimensional Euclidean spaces