Symmetry And Group Theory Flashcards
Symmetry operation that causes no change in a molecule.
Identity
Symmetry operation possessed by all molecules
Identity
Symmetry operation wherein a rotation by 360/n leaves the molecule unchanged
N-fold rotation
By convention, rotations are ___ about the axis
Counterclockwise
Symmetry operation that uses a mirror plane
Reflection
Types of mirror planes
Varallel
Herpendicular
Dihedral: specialized varallel that bisects the angle between two C2 axes
Symmetry operation that consists of n-fold rotation (herpendicular) followed by reflection
Improper rotation
The value of n for improper rotation must always be >2 because S1=mirror plane and S2=inversion
Set of symmetry operations that descirbes the molecules overall symmetry
Point groups
Recall point groups and practice
Practice symmetry questions