[University of Newcastle] Point Group Symmetry
This site contains details of various point-group symmetries, their inter-relations and specific information regarding dipole-transition selection rules.Introduction and notes to symmetry operations and dipole transitions.
Categorisation of point groups crystal class (cubic, tetragonal etc.).
Categorisation of point groups by unit cell.
General rules for products of irreducible representations.
Isomorphism and symmetry operation periodicity.
Stereographs for non-cubic crystallographic point groups.
3D objects for crystallographic point groups.
Example molecules for some point groups.
Some correlation tables are available.
You may find the molecular symmetry test useful.
Some symmetry related links.
Some references for symmetry in physics and chemistry.
[img]http://www.phys.ncl.ac.uk/staff/njpg/symmetry/porphyrazin.jpg[/img]
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