Synthesis and Characterization of New Open-Framework Vanadium Tellurite Featuring an Unprecedented (3,7)-Connected Network: K3[(VVO4)(VIVO)4(TeO3)4]·4H2O†

Hydrothermal reaction of TeO2, V2O5, K2C2O4, H2C2O4 in water yielded a novel vanadium tellurite, K3[(VVO4)(VIVO)4(TeO3)4]·4H2O. The compound exhibits ∞2[V4Te4O18]4− puckered anionic layers that are pillared by [VO4]3− units into a three-dimensional inorganic open framework with unprecedented (3,7)-connected (43)2(46·610·85) topology.