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Molecular structure of compounds of the composition X@1, X=CH3, CN, Cl, Br, I, OCN, SCN, N3, or NO3. The structure of I@1 is shown as a representative structure. Hydrogen atoms and minor‐disordered units are omitted and only representative atom names are shown for clarity. The dark gray shaded areas emphasize the pentagonal dodecahedron formed by sodium atoms; the light grey shaded areas emphasize the corners of the icosahedron formed by OtBu oxygen atoms.
