Abstract
Six FeIII centers are incorporated into the tungstophosphate anion [H2P2W12O48]12− upon reaction with FeCl3. The {P2W12Fe6} unit thus formed has been characterized in [H4P2W12Fe9O56(OAc)7]6− and [H56P8W48Fe28O248]28−. The latter is a supramolecular polyoxotungstate in which each of the four {P2W12Fe6} units is connected by three Fe-O-Fe bridges (see structure). Magnetic studies indicate strong antiferromagnetic coupling between the FeIII centers.
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