The Preparation of a New Multinuclear Heteropolytungstate Anion [Fe₃Co₄W₁₇O₇₀H₁₁]⁻¹⁰

Abstract

The preparation of a salt of a new multinuclear heteropoly tungstate complex is reported. FABMS, analytical and spectroscopic (UV-VIS-IR) evidence is presented which strongly indicates that the new complex is isostructural with [Cu₂Fe₄W₁₈O₇₀H₆]⁻¹⁰, for which the preparation and X-ray structure were reported earlier¹. The new salt is tentatively formulated Na₁₀H₅[Fe₃Co₄W₁₇O₇₀H₆]·37H₂O, wherein one Fe⁺³ or Co⁺² replaces one W⁺⁶ in the conventional [X₂Z₄W₁₈O₇₀] formulation of the earlier structure. Possibilities are thus foreseen for additional complexes, isostructural with the above and involving various combinations of transition metals. Such complexes have potential importance for magnetic interaction and bonding studies as well as for catalysis.