Chemistry Reference
In-Depth Information
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Figure 4.1
'Bowl of Fruit, Violin and Bottle' by Picasso. Reproduced with permission.
Copyright Succession Picasso/DACS 2008.
symmetry operations. For example, H
2
O belongs to the point group
C
2v
with the sym-
metry elements illustrated in Figure 4.2. Based on the atom positions alone we cannot
tell the difference between the
C
2
rotation and the
σ
v
reflection, because either opera-
tion swaps the positions of the hydrogen atoms. To distinguish the operations requires
additional information.
