Fig. 3
From: Molecular recognition by multiple metal coordination inside wavy-stacked macrocycles
Structure of [1 2Zn12 4e 2(H2O)4Cl8] determined by X-ray crystallography. Solvents, hydrogens, and tBu groups are omitted for clarity. One disorder pattern of 4e 2− is shown. a, b An ellipsoidal model (30% probability). c Packing in the crystal (a stick model). For a–c, the atoms are colored according to the elements: C, light green; N, blue; O, red; Zn, yellow; Cl, green. d A ball-and-stick model. e Three different coordination modes around the Zn centers. For d and e, the atoms are colored to show the pseudo C 2 symmetry of the entire structure (see also Fig. 2k). The Zn atoms are described in a space-filling model. f 20 coordination bonds (magenta) that were not occupied by the N,N,O–chelating moieties of 1 6–. Zn, yellow; non-metal atoms, light green
