A novel decamolybdodivanadate: synthesis and crystal structure of [H3O+]2Na6[MoVI10VIV2O38]·7H2O

The unique decamolybdodivanadate compound [H3O+]2Na6[MoVI10VIV2O38]·7H2O, showing some interesting structural features, was synthesized in high yield by reaction Na2MoO4·2H2O with VOSO4 in CH3COOH aqueous solution. The title heteropoly compound crystallizes in monoclinic space group Cm with a=14.4522(3) Å, b=14.5042(4) Å, c=10.72530(10) Å, β=113.5960(10)°, V=2060.24(7) Å3, Z=2 and Dcalc=3.178 g cm−3. The final anisptropic refinement on all metals and partial O atoms gave rise to convergence with R1=0.0591, wR2=0.1652 (I>2σ(I)) and GOF=1.065.