The Magnetochemistry of Dinuclear Transition-Metal Complexes with Hydrazones

The magnetochemical properties of dinuclear copper(II) complexes with several types of hydrazone ligands based on salicylaldehyde, its analogs, and 2,6-diformylphenol are reviewed. An attempt is made to systematize the results of studies on the magnetostructural correlations between the exchange-interaction strength and the structure of dinuclear complex. The experimental data presented indicate that the exchange-interaction strength depends not only on the geometry of the exchange fragment, but also on the nature of the nearest surroundings and the nature of the nonbridging donor atoms directly coordinated to metal.