Herman-Mauguin symbols

We have already covered the symmetry elements that apply to individual molecules (in the Schoenflies notation) in Section 2.3.1, and you should read this section now if you have not already done so. We now need to consider the symmetry operations that map the relationships between entire arrays of atoms or molecules in three dimensions. These are generally expressed using the Herman-Mauguin symbols, in which the inversion operation, i, is replaced by 1, the reflection, [Pg.324]

Herman Mauguin (H M), Hall Symbol, Space Group number... 

Symbols of point groups and space groups are based on two notation systems Schoenflies notation and Herman-Mauguin notation. 

Symmetry elements will be denoted by international symbols (drawn up by Herman and Mauguin) or sometimes also by older Schonfliess ones. 

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