Asymmetrically Fused Polyoxometalate-Silver Alkynide Composite Cluster

作者：Kurasawa Mariko; Arisaka Fumio; Ozeki Tomoji^*

来源：Inorganic Chemistry, 2015, 54(4): 1650-1654.

DOI：10.1021/ic502644v

We demonstrate that an asymmetric composite cluster, [Ag-25{C=CC(CH3)(3)}(16)(CH3CN)(4)(P2W15Nb3O62)] (<bold>1</bold>), consisting of directly fused polyoxometalate and silver alkynide moieties can be facilely synthesized by a one-pot reaction between a Nb-substituted Dawson-type polyoxometalate, H-4[alpha-P2W15Nb3O62](5), and the mixture of (CH3)(3)CC CAg and CF3SO3Ag. Single-crystal X-ray diffraction revealed the structure of <bold>1</bold>, where Ag atoms are selectively attached to the Nb-substituted hemisphere of the pedestal Dawson anion. Its structural integrity in the solution was demonstrated by P-31 NMR spectroscopy and analytical ultracentrifugation. The latter method also unveiled the stepwise formation mechanism of <bold>1</bold>.

• 出版日期2015-2-16