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Figure 9
Group–subgroup tree containing all known polymorphs of AnBF4 from the high-symmetry parent structure D to a hypothetical structure with doubled c axis in P21. Red boxes indicate observed structures and bold boxes indicate a doubled parent c axis. Red transitions are experimentally observed with dashed lines indicating transitions between groups with no direct group–subgroup relationship. Important transitions are labelled with their irrep labels, cell transformation and origin shift.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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