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Laue classes

  • Page ID
    19056
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    The Laue classes correspond to the eleven centrosymmetric crystallographic point groups. When absorption is negligible and Friedel's law applies, it is impossible to distinguish by diffraction between a centrosymmetric point group and one of its non-centrosymmetric subgroups.

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    Laue classes Non-centrosymmetric groups
    having the same Laue class
    \({\bar 1}\) 1
    2/m 2, m
    mmm 222, 2mm
    \({\bar 3}\) 3
    \({\bar 3}m\) 32, 3m
    4/m 4, \({\bar 4}\)
    4/mmm 422, \({\bar 4}2m\), 42m
    6/m 6, \({\bar 6}\)
    6/mmm 622, \({\bar 6}2m\), 62m
    \(m{\bar 3}\) 23
    \(m{\bar 3}m\) 432, \({\bar 4}\)32

    Laue classes is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Online Dictionary of Crystallography.

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