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Figure 2
Undistorted structures of the simplest n = 1 layered perovskites viewed between layers (top) and along the layer stacking direction (bottom) highlighting the completely `eclipsed', partially `staggered' and completely `staggered' adjacent layers of the (0, 0) and (1/2, 0) Dion–Jacobson (DJ and DJ2, respectively) and (1/2, 1/2) Ruddlesden–Popper (RP) phases.

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