Abstract
Abstract Two types of binuclear copper(II) and nickel(II) complexes, OK-3(H), 3(H)-M2 and [OK-m, 3(H)-M2]ClO4 (m=2 or 3), have been synthesized, where OK-3(H),3(H) is a macrocycle composed of two 2,6-diformyl-4-methylphenol and four hydroxylamine, and OK-m,3(H) is a macrocycle composed of two 2,6-diformyl-4-methylphenol, one diamine (ethylene diamine (m=2) or 1,3-diaminopropane (m=3)), and two hydroxylamine. It was found that a very strong antiferromagnetic exchange interaction is operating between two copper(II) ions for OK-3(H), 3(H)-Cu2 and [OK-2,3(H)-Cu2]ClO4. The complex [OK-2,3(H)-Ni2]ClO4. DMF was found to be a novel-type binuclear nickel(II) complex, in which one nickel (II) ion is diamagnetic and the other is paramagnetic.
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