Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 11, Pages 1493-1500Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200600942
Keywords
Dawson complexes; paramagnetic P-31 NMR spectroscopy; electrochemistry
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Mixed-metal Dawson sandwich complexes [MCo3(H2O)(2)-(P2W15O56)2](16-) (represented as {MCo3P4W30}) have been synthesized by the reaction of M2+, (where M = Mn, Co, Ni, Zn and Cd) with the lacunary sandwich complex alpha beta-[Na-Co-3(H2O)(2)(P2W15O56)(2)](17-) (represented as {NaCO3P4W30}): [NaCo3(H2O)(2)(P2W15O56)2](17-) + M2+-> [MCo3(H2O)(2)(P2W15-O-56)2](16-) + Na+. The {MCo3P4W30} species were characterized by IR spectroscopy, elemental analysis and P-31 solution NMR spectroscopy. The electrochemical behaviour of these mixed-metal sandwich complexes was investigated in aqueous solution and compared with that of beta beta[Co-4(H2O)(2)(P2W15O56)(2)](16-) (represented as beta beta-{Co4P4W30) and {NaCo3P4W30). (c) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007.
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