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Figure 4
Comparative effects of the two generic types of layer-shift mode acting on the RP parent (a) M5−(a, a) mode (see also Fig. 3[link]) and (b) the analogous Γ5+ mode. Note that the former leads to orthorhombic symmetry, whereas the latter corresponds to a monoclinic distortion.

IUCrJ
Volume 8| Part 4| July 2021| Pages 485-513
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521005418