Designed Molecules for Self-Assembly: The Controlled Formation of Two Chiral Self-Assembled Polynuclear Species with Predetermined Configuration.

Squaring the cycle: Ligand L1 has been developed for the fabrication of chiral molecular squares, which can also be considered as circular helicates. By using a chirally modified ligand, one of the two forms of the complex can be generated selectively. bpy=2,2'-bipyridin-6-yl.