Cnv point groups

A Cnv point group contains a Cn axis of symmetry and n a planes of symmetry, all of which contain the Cn axis. It also contains other elements which may be generated from these. 

A Dnh point group is related to the corresponding Cnv point group by the inclusion of a ah plane. 

In the C, Cs, Cn and Cnv point groups the totally symmetric symmetry species is A, A, A and A i (or X1), respectively. For example, CHFCIBr (Figure 4.7) belongs to the Cl point group therefore ju 0 and, since all three translations are totally symmetric, the dipole... 

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