A chiral pentadecanuclear metallamacrocycle with a sextuple twisted Mobius topology

A C (3) symmetric pentadecanuclear metallamacrocycle was obtained by the self-assembly of a pentadentate bridging ligand, N -phenylpropiolyl salicylhydrazide (H3L), and a manganese ion. The combination of a narrow C alpha-C beta region near the bridging domain and a bulky phenyl end away from the bridging domain as a steric domain induced clockwise twists in the cycle. The resulting macrocycle with a sextuple twisted Mobius topology was stabilized by extensive weak intramolecular interactions.