Supramolecular Isomerism in Honeycomb Metal−Organic Frameworks Driven by CH···π Interactions: Homochiral Crystallization from an Achiral Ligand through Chiral Inducement

The solvothermal reaction of Zn(NO3)2·6H2O and 4,4′,4′′-(2,4,6-trimethylbenzene-1,3,5-triyl)tribenzoic acid (H3TMTA) in N,N′-diethylformamide or N,N-dimethylacetamide gave rise to two layered honeycomb frameworks. The different stacking arrangements of the 2D layers generate achiral (α-1) and chiral (β-1) architectures, which are supramolecular isomers. The homochiral crystallization of β-1 can be achieved through chiral inducement, which is confirmed by circular dichroism spectra.