Fig. 2: Single-crystal X-ray structure of SD/Ag90a.
From: A Keplerian Ag90 nest of Platonic and Archimedean polyhedra in different symmetry groups
a Total cluster structure of SD/Ag90a incorporating Van der Waals surfaces. Hydrogen atoms are removed for clarity. Color legend: Ag, purple; P, brown; S, yellow; O, red; C, gray. b The ball-and-stick mode of the triply nested polyhedral silver skeleton, viewed down an axis through the front silver 5-gon. The three different shells are individually colored. c The icosahedral Ag60 rhombicosidodecahedron. d The octahedral Ag24 truncated octahedron. e The octahedral Ag6 octahedron. f The interactions between eight PO43− and three different shells. g The detailed coordination of PO43− towards different silver polygons in three different shells. All PO43− ions are shown as yellow tetrahedra. h Six μ8-S2− ions intercalate the aperture between Ag24 and Ag60 shells of SD/Ag90a by linking two 4-gons up and down from these shells, respectively.
