Abstract
The cooperative physical properties of a chiral macrocyclic binucleating ligand, S,S-cypim, containing 6-coordinate (closed-site) and four coordinate (open-site) compartments bridged by phenolic oxygen atoms have been examined. The chiral (1S,2S)-trans- 1,2-bis(aminomethyl)cyclopentane moiety of the S,S-cypim ligand forces the monometallic and symmetrical bimetallic complexes to adopt one diastereomer. Solution magnetic moments of the bimetallic complexes containing two paramagnetic metals indicate spin-spin coupling at 20 o C. All of the metals in these complexes, except for Co(III), are spin-free
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