Synthesis and Crystal Structure of H_2O

A Keggin-type Polyoxometalate H2O[Mn(phen)3]2[SiW12O40] was synthesized by mild hydrothermal techniques,and the synthesis and crystal structure were discussed.The compound crystallized in the momoclicnic space group C2/c with a = 1.9735(4)nm,b = 1.8061(4)nm,c = 2.5200(5)nm,α = 90.00°,β = 100.52(3)°,γ = 90.00°,V = 8.831(3)nm3,Z = 4,R1 =0.0562,wR2=0.1376