Complexes of non-lacunary Keggin- and Dawson-type polyoxometalates with Pb(ii): formation of 1D coordination polymers with different bonding modes†,10.1039/C6NJ02155G

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Complexes of non-lacunary Keggin- and Dawson-type polyoxometalates with Pb(ii): formation of 1D coordination polymers with different bonding modes†

Alexander S. Yunoshev,Pavel E. Plyusnin

New Journal of Chemistry Pub Date : 10/10/2016 00:00:00 , DOI:10.1039/C6NJ02155G

Abstract

A new coordination polymer based on Keggin-type [SiW₁₂O₄₀]⁴⁻ and Pb²⁺ ions, {Pb₂(μ₂-DMF)₂(DMF)₈(SiW₁₂O₄₀)} (1a), was prepared by a reaction between H₄[SiW₁₂O₄₀] and Pb(NO₃)₂ in N,N-dimethylformamide (DMF). Varying the crystallization conditions, a complex with a slightly different coordination mode of the {Pb₂} unit and solvate composition, {Pb₂(μ₂-DMF)₂(DMF)₈(SiW₁₂O₄₀)}·DMF (1b), can be obtained. The complex containing Well–Dawson polyoxoanions, {(Pb(μ₂-DMF)₃(DMF)₆)(Pb(DMF)₅)(P₂W₁₈O₆₂)}·0.5DMF·1.3H₂O (2), was prepared by a similar strategy.