Paramagnetic Cage-Type Co(II) Complexes of Chiral Macrocycles: Enantio- and Size-Selective Binding of Guest Molecules.

ABSTRACT: Two enantiomers of the cage-type complex, [Co₃L^R₂] and [Co₃L^S₂] of a large hexaazatriphenolic [3 + 3] macrocyclic imine L, have been synthesized and characterized on the basis of NMR, CD, and ESI MS spectra. The X-ray crystal structures of [Co₃L₂] crystalline forms reveal two macrocycles of cone shape stitched together by three Co(II) ions, forming a barrel-shaped molecule with a central void. Because of the limited size of the [Co₃L₂] cavity and the enantiopure nature of these enantiomeric complexes, both size-selective and enantioselective binding of guest molecules are observed. In the case of chiral guests, the interaction with p

SUBMITTER: Janczak J 

PROVIDER: S-EPMC11898176 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature