WEB TUTORIAL - Group Theory

[Re2Cl8]2- Worked Example

It may help to follow this tutorial whilst looking at The Flow Diagram to follow the process of arriving at the point group.
water

Help

A horizontal plane of symmetry (h ) is one that is horizontal with respect to the primary axis of rotation (which is taken as vertical (z) in all cases). For example, the plane of symmetry present in benzene which is horizontal with respect to the C6 axis.

benzene sigma h

Is there a sigmah plane of symmetry present?
YES
NO