Journal
DALTON TRANSACTIONS
Volume -, Issue 5, Pages 794-800Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b315088g
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Two new mixed-metal sandwich complexes [M-2(II)(H2O)(2)Fe-2(III)(P2W15O56)(2)](14-) (abbreviated {M2Fe2P4W30}, M-II = Co-II, Mn-II) were obtained at pH 3 by addition of M2+ to [Na-2(H2O)(2)Fe-2(III)(P2W15O56)(2)](16-) (abbreviated {Na2Fe2P4W30}) without substitution in the alpha-[P2W15O56](12-) (abbreviated {P2W15}) units. Their X-ray structures are reported. At lower pH, back conversion to {Na2Fe2P4W30} was followed by P-31 NMR, electrochemistry and UV-visible spectroscopy. The preparation and the characterization in solution of the lacunary intermediate [NaCoII(H2O)(2)Fe-2(III)(P2W15O56)(2)](15-) (abbreviated {NaCoFe2P4W30}) is also described.
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