Hydrothermal Synthesis of the First Vanadomolybdenum Polyoxocation with a “Metal-Bonded” Spherical Framework

The heteropoly compound [(VVO4)MoVI12O36(VIVO)6][(OH)9]·11H2O
(1), synthesized by hydrothermal method under weak basic
conditions, represents the first mixed Mo/V six-capped Keggin
structural derivative with a spherical skeleton, and the first transition
metal polyoxocation. The successful synthesis of 1 demonstrates
that basic hydrothermal synthesis might be a power synthetic route
to the isolation of more new polycationic metal-oxo clusters.