TETRANUCLEAR SULFIDO-BRIDGED COMPLEX OF CR(III) HAVING A STRONGLY MAGNETIC GROUND STATE

摘要

ABSTRACT OF THE DISCLOSUREBroadly stated, the present inventionencompasses tetranuclear sulfide-bridged complexes ofCr(III) having bridging organo-carboxylate ligands.Indeed, in one embodiment, the present invention isdirected toward a novel composition of matter having acomplex cation of the general formulaCr4S(RCO2)g(L)42+, wherein R represents alkyl groupshaving from 1 to 12 carbon atoms, L represents aligand or ligands containing a donor atom selectedfrom oxygen, nitrogen, carbon, and sulfur. In thecomplex of the present invention, the four Cr(III)atoms are bound to a central tetrahedral sulfur atom.The chromium atoms also are octahedrally coordinatedwith bridging carboxylates and the ligand molecule.Also, the bridging carboxylates, RCO2 of the aboveformula, are the same or different carboxylates.