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Figure 2
Bilayer of a rectangle structure of group pmg ([\rho = \sqrt{3/2}]) rotated by δ = 1.45°. At [({{1} \over {2}},0)] of the unit cell of the pseudo-periodic lattice [\specialfonts{\frak T}], in cyan, the two structures are displaced by [{{1} \over {2}}] of Λ in the y direction and vice versa. The three main bilayer structures obtained by simple translation between the two pmg layers are clearly identified: at (0, 0) the initial structure pmg, at [({{1} \over {2}},0)] another structure pmg, at [(0,{{1} \over {2}})] a structure pmm and at [({{1} \over {2}},{{1} \over {2}})] a structure pgm.

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ISSN: 2053-2733
Volume 81| Part 2| March 2025|
https://doi.org/10.1107/S2053273324012087
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