A spherical deca-vanadophosphate covalent assembled all-inorganic open framework

Abstract

Through covalent connection of phosphate groups, an all-inorganic open framework, [NH₄]₉[P₄V₁₀O₃₄]_1.5·3H₂O (1), has been prepared by a hydrothermal reduction–condensation method. It is built from a vanadophosphate (VPO) unit of [P₄V₁₀O₃₄]⁶⁻, which represents a rare example of a spherical {V₁₀-type} structure among the VPO family. Further studies also demonstrate that compound 1 is an n-type semiconductor.