Magnetic organometallosiloxanes |
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Authors: | M M Levitskii A L Buchachenko |
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Institution: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(2) N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation |
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Abstract: | The generalized analysis of a change in magnetic properties of organometallosiloxanes as a function of the number of metal
atoms in their molecules (on going from mono- and binuclear to polynuclear crystalline and polymeric compounds) is presented.
The relation between the magnetic characteristics and structural parameters of metal-containing fragments is studied. The
factors affecting the formation of exchange-coupled ionic pairs and clusters in polymeric systems are analyzed. The ways to
the organization of magnetic phases in polymeric systems are considered: the choice of conditions of chemical synthesis, the
organization of metal atoms in a common spin system upon incorporation of conducting coordinating additives, and thermocondensation
and reduction processes leading to the formation of a metallic phase dispersed in a silicon dioxide matrix.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1432–1442, August, 1997. |
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Keywords: | organometallosiloxanes molecular ferromagnetism magnetic properties exchange interactions |
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