Magnetic properties of polyoxovanadates: Magnetic confirmation of the valence state of the vanadium centers in Na₆[H₆ V₁₂O₃₀F₂] · 22H₂O

Oxovanadium clusters are intersting both as moels of bulk magnets and in their own right. Results are presented suggesting that in Na₆[H₆V₁₂O₃₀F₂]·22H₂O (see Figure) it is meaningful to decide which particular vanadium centers should be considered at 5⊕ and which as 4⊕. It is shown that in principle ist is possible to tune and design the topology, and thus the magnetic properties, of polyoxovanadates(IV/V) by means of the template effect. magnified image