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Figure 5
Normalized cell parameters and bond lengths of the four unique short bonds as a function of pressure. The optimized geometry used in the previous section is seen to be at slightly low negative pressure from a Birch–Murnaghan third-order fit to the energy–volume curve.

IUCrJ
Volume 7| Part 3| May 2020| Pages 480-489
ISSN: 2052-2525
https://doi.org/10.1107/S2052252520003619