Sodium barium hexahydrogenhexamolybdoaluminate(III) decahydrate

The title compound, NaBa[AlMo6(OH)6O18]·10H2O, contains a B-type Anderson polyanion [AlMo6(OH)6O18]3− having an inversion center with approximate D3d symmetry. There are two uncoordinated water mol­ecules per formula unit, the remaining eight being coordinated to the Na+ and Ba2+ cations, which link the polyanions to form the three-dimensional structure. Hydrogen-bonding inter­actions exist to stabilize the structure.