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Figure 1
The idealized model of Schwarzenbach (1969BB22). Left: the four-layer stacking (I41/amd). Right: the two-layer stacking (P42/nmc). I and Hg atoms are, respectively, at the corners and centers of the tetrahedra. The site symmetry of the supertetrahedra is [\bar4m2]. See also Fig. 5[link]

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
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