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Improper rotations (Sn)


Symmetry operations are operations that leave the molecule apparently unchanged. In each molecule there can be any number or none of these:

Improper rotations (Sn)

These are rotations about the axes of symmetry followed by reflections.


Other types of Symmetry Operations
Rotations (Cn) Inversion centre (i) Reflections (sh, sd and sv) Identity operation (E)