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Figure 3
Crystal structure of anticotunnite Rb2S (Pnma, Z = 4) at 0.7 GPa upon compression. Light and dark grey circles are the Rb and S atoms. The structure is projected along b and shows the walls of trigonal prisms of Rb atoms, which are occupied by S atoms, connected by common edges. Alternate walls are shifted by b/2. The S atoms are coordinated by nine Rb atoms, six of them corresponding to the apices of the prism and three extra Rb atoms belonging to adjacent chains (dashed lines).

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 67| Part 2| February 2011| Pages 109-115
doi:10.1107/S010876811005370X
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