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Figure 6
Symmetry of the An layers in (a) the P21/c and (b) the I2/a polytypes as well as (c) the family structure of the polytype family. (1) complexes are represented by triangles which are red on one side and blue on the other side. If both orientations are realised (m[010] symmetry), the triangle is gray. A translation by [{\bf{b}}/2] is represented by darker shading.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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