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The title compound [Co(en) 2(H 2O) 2] 2· [Mo Ⅴ 4Mo Ⅵ 4V Ⅳ 8O 40 (AsO 4)] was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a tetracapped Keggin polyanion, which contains different coordinated cations. The crystal is monoclinic, space group C2/c with a =1.458 3(2) nm, b =2.174 07(13) nm, c =1.893 2(2) nm, β =91.532°, V =6.000 2(10) nm 3, Z =2, D c=1.452 g/cm 3, R =0.035 9, R w=0.079 8, S =1.092.
The title compound [Co (en) 2 (H 2 O) 2] 2 [Mo Ⅴ 4Mo Ⅵ 4V Ⅳ 8O 40 (AsO 4)] was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster The crystal is monoclinic, space group C2 / c with a = 1.458 3 (2) nm, b = 2.174 07 (13) nm, c = 1.893 2 (2) nm , β = 91.532 °, V = 6.000 2 (10) nm 3, Z = 2, D c = 1.452 g / cm 3, R = 0.035 9, R w = 0.079 8, S = 1.092.