lay open networks from vanadosilicate clusters The use of clusters as building stops for open-frameworks is a theme running by the and of much recent research into microporous solids.

lay open networks from vanadosilicate clusters

The use of clusters as building stops for open-frameworks is a theme running by the and of much recent research into microporous solids. Tripathi, Clearfield and I have reported the first 3D solid framework, with polyoxovanadosilicate clusters as their structural unit (A Tripathi, T Hughbanks & A Clearfield, J Am Chem Soc 2003 125 10528) Tripathi establish that under hydrothermal conditions, reaction between [Vsub2][Osub5] Ge[Osub2] 1,4-diaminobutane (DAB), and water yields a production with discrete [[[V.sub.14][O.sub.44][(GeOH).sub.8].sup.4]- clusters, depicted at the top in Figure 1 The analogous reaction involving Si[O.sub.2] gives a result in which clusters crosslink into a porous

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