Inorganic Chemistry · 2008 · 64 citations · 13 references
Natural SciencesChemistryCrystal StructureInorganic ChemistryPhysical ChemistryCluster ChemistryCluster CompoundsCoordination ChemistryExchange InteractionsMagnetism Of Inorganic CompoundsTransition Metal ComplexesComplex Formation StudiesComplexation ChemistryCoordination Compound MagnetismGround State PropertiesMagnetic Ordering StudiesMagnetic Properties Of Transition Metal ComplexesMagnetism Of Transition Metal ComplexesSpin Frustration
An unusual [Mn(IV)Gd(III)(2)(mu(3)-O(2-))](8+) triangular complex has been prepared from the initial use of 2,6-diacetylpyridine dioxime (dapdoH(2)) in 3d/4f cluster chemistry. The complex has an S = (13)/(2) ground state, with exchange parameters J = +0.49 cm(-1) and J' = -0.12 cm(-1) [H = -2J(S(i) x S(j)) convention] for the Gd(III)...Mn(IV) and Gd(III)...Gd(III) interactions, respectively. The origin of this ground state has been rationalized by consideration of the spin frustration occurring within the complex as a function of the relative magnitude of the competing interactions.
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