MAGNETIC ORGANOMETALLOSILOXANES

The generalized analysis of a change in magnetic properties of organom etallosiloxanes as a function of the number of metal atoms in their mo lecules (on going from mono- and binuclear to polynuclear crystalline and polymeric compounds) is presented. The relation between the magnet ic characteristics and structural parameters of metal-containing fragm ents is studied. The factors affecting the formation of exchange-coupl ed ionic pairs and clusters in polymeric systems are analyzed. The way s to the organization of magnetic phases in polymeric systems are cons idered: the choice of conditions of chemical synthesis, the organizati on of metal atoms in a common spin system upon incorporation of conduc ting coordinating additives, and thermocondensation and reduction proc esses leading to the formation of a metallic phase dispersed in a sili con dioxide matrix.