We have recently synthesized a series of dinuclear metallacycles supported by m-bis[bis(3,5-dimethyl-1-pyrazolyl)methyl]benzene, Lm* , of the type [M2(�-F)(�-Lm* )2](BF4)3 (M = Mn2+, Fe2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+) and [Cu2(�-X)(�-Lm* )2](ClO4)3 (X = CN-, F-, Cl-, OH-, Br-), where the metal centers are in the unusual axially compressed trigonal bipyramidal geometry. These complexes represent the first extensive series of bimetallic complexes with a linear M(II)�X�M(II) bridging arrangement and give a unique opportunity to determine the impact of systematic structural changes on the magnetic properties while holding the overall structure constant both in solid state and solution �1D and 2D NMR for copper(II).

Unique dinuclear metallacyclic system linearly bridged by small anions developed to probe antiferromagnetic superexchange interactions in solid state and solution

245th National Meeting (2013)

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