Steric control of the nuclearity of metallamacrocycles: formation of a hexanuclear gallium metalladiazamacrocycle and a hexadecanuclear manganese metalladiazamacrocycle

Abstract

An S₆-symmetric hexanuclear gallium metalladiazamacrocycle, [Ga^III₆L²₆S₆] with a –(ΛΔ)(ΛΔ)– chiral sequence and an S₈-symmetric hexadecanuclear manganese metalladiazamacrocycle, [Mn^III₁₆L²₁₆S₁₆] with a –(ΛΛΔΔ)(ΛΛΔΔ)– chiral sequence were prepared using the same N²-trans-cinnamoyl-2-hydroxy-3-naphthoylhydrazide (H₃L²) as a bridging pentadentate ligand between the metal centers for the formation of a macrocyclic system.