Abstract
Two dinuclear cobalt(II) complexes of the formula [Co2X4(isonia)4] have been synthesized and structurally characterized; isonia is unidentate neutral iso-nicotinamide and X are furan-3- or furan-2-carboxylate ligands. The chromophore {CoO4N2} is formed of two iso-nicotinamide ligands and three furancarboxylate ligands where two of them bear a bridging function and one is a terminal-bidentate ligand. The magnetic data confirm a weak exchange interaction (J/hc=−2cm−1) and a high single-ion zero-field splitting (D/hc=63 and 33cm−1, respectively).
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