3.2.7. Synthesis of Cu(H2O)4{CuMo6O16(OH)2[CH3C(CH2O)3]2}·10H2O (**7**)

The synthetic procedure of compound **7** was similar with that of compound **6** except that the pH of the solution was adjusted to 2~2.5. Elemental analysis calcd. (%) for Cu(H2O)4{CuMo6O16(OH)2[CH3C(CH2O)3]2}·10H2O (Mw = 1479.20 g mol<sup>−</sup>1): C 8.12%, H 3.27%, Cu 8.59%, and Mo 38.92%; found C 8.21%, H 3.35%, Cu 8.64%, and Mo 39.01%.
