Self-Organization of -Crown Ether Derivatives into Double-Columnar Arrays Controlled by Supramolecular Isomers of Hydrogen-Bonded Anionic Biimidazolate Ni Complexes
Figure 4
Perspective views of the channel structures through each hexagonal cavity for crystals 1–5. Each hexagonal cavity is stacked to form the channel structures. The channel structures of all crystals are constructed from segregated stacking, that is, from different stacking columns of each of the Δ and Λ optical isomers of [Ni(Hbim)3]− along the channel axis. The Δ and Λ isomers of [Ni(Hbim)3]− are represented by the red and blue lines, respectively. The crown ether frameworks and MeOH molecules are shown in green. The potassium and nickel (II) ions are drawn as yellow and magenta spheres, respectively.
