Helix-mediated over 1 nm-range chirality recognition by ligand-to-ligand interactions of dinuclear helicates.

Long-range chirality recognition between the two chiral guest ligands can be tuned based on the helix distances ( = 11.5 and 14.0 Å) of bis-diketonate bridged dinuclear lanthanide complexes ( and , respectively) used as mediators.