ChemInform Abstract: Magnetic Characterization of Tetranuclear Copper(II) and Cobalt(II) Exchange-Coupled Clusters Encapsulated in Heteropolyoxotungstate Complexes. Study of the Nature of the Ground States.

Abstract

This paper presents a magnetic characterization of the heteropolyanions [M 4 (H 2 O) 2 (PW 9 P 34 ) 2 ] 10- and [M 4 (H 2 O) 2 (P 2 W 15 O 56 ) 2 ] 16- (M=Cu(II), Co(II)), with emphasis on the exchange interactions. Their individual heteropolyoxometalate molecules encapsulate a rhomblike arrangement formed by four coplanar MO 6 octahedra sharing edges