Extended Data Fig. 4: Overview of X-ray crystallographic structure of the Cd26Se17I18(PPr3)10 cluster.
From: Precision synthesis of a CdSe semiconductor nanocluster via cation exchange
a, Cd26Se17 core, Cd26Se17I18P10 inorganic framework, and Cd26Se17I18(PPr3)10 cluster viewed from three different angles. The corresponding sizes are measured according to the atom-to-atom distance along the edge of the tetrahedron. b, Packing and coordination of Se17 anion lattice (top) and Cd26 cation lattice (bottom). The anion lattice features a central icosahedron capped by four apical Se. The cation lattice can be viewed as four interpenetrating icosahedra. All Se and Cd are tetrahedrally coordinated except for the four apical Se (light yellow). Green: Cd; orange: Se; pink: P; purple: I; grey: C; and white: H.
