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Figure 5
Related structural fragments of the ambient pressure phase (a) and the high-pressure phase (b) with molecules coloured according to their symmetry relations. Directions of the principle axes of strain ellipsoid corresponding to a hydrostatic compression are shown with respect to the fragments of crystal structure before (1P, 2P, 3P) and after (1P′, 2P′, 3P′) phase transitions; 1 – minimum, 3 – maximum compression, 2 – normal to 1 and 3.

ISSN: 2052-5206
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