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The crystal structure of two isomorphic cluster compounds with formula (C_5H_7S_2)-[Mo_3(μ_3-O)(μ-X)_3(μ-OAc)_3Cl_3] (X=Cl for compound (Ⅰ) and compound (Ⅱ)) has been investigated by X-ray diffraction method. The parameters of two crystals are: a=10.423(1),b=17.095(4), c=14.062(7), β=97.54(4)(°); Dc=2.20gcm~(-3), D_o=2.17g cm~(-3) for compound (Ⅰ). and a=10.511(3), b=11.213(2), c=14.053(3), β=96.12(2)(°); D_c=2.52g cm~(-3), D_o=2.53gcm~(-3) for compound (Ⅱ). The space groups are P2_1/C. Z=4. The 2621 and 2548 independent reflections with I>3σ(I) were collected on a CAD-4 four-circle diffractometer by means of MoKα radiation. The crystal structures were solved by heavy atom method and refined by full-matrix least-squares technique to a final discrepancy factors of R=0.061 and 0.051 respectively. The results of investigation show that the molecule consists of the cation (C_5H_7S_2)+ and the trinuclear Mo cluster anion, the configuration of which is similar to that of (Et_4N)_2[Mo_3(μ_3-O)(μ
The crystal structure of two isomorphic cluster compounds with formula (C_5H_7S_2) - [Mo_3 (μ_3-O) (μ_X) _3 (μ-OAc) _3Cl_3] has been investigated by X-ray diffraction method. The parameters of two crystals are: a = 10.423 (1), b = 17.095 (4), c = 14.062 (7), β = 97.54 (4) and a = 10.511 (3), b = 11.213 (2), c = 14.053 (3), β = 96.12 (2) (°); D_c = 2.52 g cm -3, D_o = 2.53 g cm -3 for compound (Ⅱ). The space groups are P2_1 / C. Z = 4. The 2621 and 2548 independent reflections with I> 3σ (I) were collected on a CAD-4 four-circle diffractometer by means of MoKα radiation. The crystal structures were solved by heavy atom method and refined by full-matrix least-squares technique to a final discrepancy factors of R = 0.061 and 0.051 respectively. The results of investigation show that the molecule consists of the cation (C_5H_7S_2) + and the trinuclear Mo cluster anion, the configuration of which is similar to that of (Et _4N) _2 [Mo_3 (μ_3-O) (μ