The title compound was obtained by the reaction of PPh4Br, Sb2Se3, and bromine in dichloromethane. Its crystal structure was determined by X-ray diffraction. Crystal data: a = 1249.1(2), b = 1307.8(2), c = 2152.3(4) pm, α = 102.93(2), β = 100.83(2), γ = 100.42(2)°, Z = 2, triclinic, space group P1̄. (PPh4)4Sb8Br28 is isotypic with (PPh4)4Sb8I28. The Sb8Br284- ion can be taken as the association product
通过 PPh4Br、
Sb2Se3 和
溴在
二氯甲烷中的反应获得标题化合物。其晶体结构由 X 射线衍射确定。晶体数据:a = 1249.1(2), b = 1307.8(2), c = 2152.3(4) pm, α = 102.93(2), β = 100.83(2), γ = 100.42(2)°, Z = 2 , 三斜, 空间群 P1̄. (PPh4)4Sb8Br28 与 (PPh4)4Sb8I28 同型。Sb8Br284- 离子可以看作是八个 SbBr3 分子与四个 Br- 离子的缔合产物。每个 Sb 原子都有一个扭曲的八面体配位,三个较短(252 至 274 pm)和三个较长(300 至 353 pm)Sb-Br 键。八面体在每排四个八面体的两个平行排中共享公共边。28 个
溴原子的排列对应于最紧密堆积的球体的一部分。