title: The first framework solid composed of vanadosilicate clusters.
abstract: In this Communication, we report the first example of a network structure composed of vanadosilicate clusters. We utilized hydrothermal conditions to synthesize a polyoxovanadogermanate (POVG): (C4H14N2)4[V14O44(GeOH)8].6H2O. By substituting SiO2 for GeO2 in the synthesis, a framework solid, H4V18O46(SiO)8C4H12N2)4.(H2O)] .4H2O, is formed in which isostructural vanadosilicate clusters are linked by five-coordinate vanadium with a (VO)O2N2 environment. The charge-compensating organic amine, 1,4-diaminobutane, in the POVG is covalently bonded to the linking vanadium polyhedra in the framework solid.
authors.affiliation: Department of Chemistry, Texas A & M University, College Station, TX 77842-3012, USA.
authors.forename: Akhilesh
authors.initials: A
authors.lastname: Tripathi
authors.forename: Timothy
authors.initials: T
authors.lastname: Hughbanks
authors.forename: Abraham
authors.initials: A
authors.lastname: Clearfield