Self-assembly of high-dimensional architecture from Strandberg-type polyoxometalate clusters and silver ions

A new three-dimensional (3D) compound [Ag12(OH)2(H2O)4KNa(P2Mo5O23)2] (1), was synthesized by the liquid diffusion method and characterized by single crystal X-ray diffraction analysis, elemental analysis, IR spectroscopy and thermal gravimetric analysis. In 1, two crystallographically independent P2Mo5 clusters are surrounded by thirty-seven Ag+ ions, three K+ ions and three Na+ ions, representing the highest connected number of the Strandberg-type POMs to date. There are twelve crystallographically unique silver cations, which have different coordination geometries: distorted triangular prism, distorted octahedron, distorted square-pyramid and distorted trigonal bipyramid. All the Strandberg-type units are interlinked by Ag (I) forming a 3D arrangement through O-Ag-O bridging bonds. The luminescent property of the compound 1 is tested in the solid state.

A new compound [Ag12(OH)2(H2O)4KNa(P2Mo5O23)2] (1), was synthesized by the liquid diffusion method and conventionally characterized, in which the inorganic layers formed by the coordination of diphosphopentamolybdate anions to sliver ions are linked by Ag6 clusters forming a unique 3D framework.Figure optionsDownload as PowerPoint slideHighlights
► The compound represents the first example of silver compound based on P2Mo5 cluster.
► A unique 3D framework is formed by P2Mo5-Ag layers and Ag6 clusters.
► Two P2Mo5 clusters are surrounded by thirty-seven Ag+ ions.
► Twelve crystallographically unique silver ions are in different geometries.