The crystal structure of hexakisammonium diacetyloctamolybdate tetrahydrate

The title compound, [NH4](6)[(CH3CO)(2) (Mo8O28)] . 4H(2)O, was produced fr om (NH4)(6)[Mo7O24] . 4H(2)O aqueous solution in the presence of N2H4 H2SO4 and its structure has been determined by X-ray single crystal analysis. Th e crystallographic data: C4H38Mo8N6O34, M-r = 1481.92, triclinic, P (1) ove r bar, a = 8.127 (2), b = 10.373(2), c = 12.383(3) Angstrom, alpha = 99.51( 3), beta = 105.47(3), gamma = 112. 92(3)degrees V = 883.0(3) Angstrom(3), Z = 1, D-c = 2.787 g/cm(3), F(000) = 712, mu = 2.864 mm(-1), Final R = 0.036 8 and wR = 0.0924 for 2926 reflections with I>2 sigma(I). The X-ray crystal structure analysis reveals that there is one independent molecule in the u nit cell of the title compound which contains one centrosymmetric diacetylo ctamolybdate anion, six ammonium cations and four water molecules.