The electrotransport, sorption, and photochemical properties of polyoxometalateO 416 H 6 (H 2 O) 58 (CH 3 CO 2 ) 6 ] · xH 2 O (x ~ 250) with a toroidal structure are studied. Con ditions for studying these characteristics are selected on the basis of data on the stability of POM, in depen dence on the concentration and acidity of the medium and the processes of thermal decomposition. A set of independent physical and chemical methods of analysis is used. The possibility of the complexation of toroi dal POM with polymer molecules is established. The photostabilizing effect of this POM on polymer mole cules is revealed.

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