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Figure 2
Schematic representations of the hk0 (top) and hk1 planes (bottom) based on the A-centred supercell with V = 5200.7 (3) Å3 (Table 4[link]). The indexing with the supercell (left) predicts too many reflections in hk0 and too few in hk1. Twinned indexing with three subcells related by 120° rotations about c (right) provides the correct predictions in both planes. Splitting of reflections is ignored in the drawings.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 66| Part 11| October 2010| Pages m330-m335
doi:10.1107/S0108270110041466
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