02(7) A(3), Z = 2, and R(1) = 0.0314 at -173 degrees C. The (19)F chemical shift of [N(CH(3))(4))][BrO(3)F(2)] in CH(3)CN is 237.0 ppm and is more deshielded than those of the previously investigated Br(VII) species, BrO(3)F and BrF(6)(+). The vibrational frequencies of the BrO(3)F(2)(-) anion were determined by use of Raman and infrared spectroscopy and were assigned with the aid of electronic structure
BrO(3)F(2)(-) 阴离子是通过 BrO(3)F 与
氟离子供体 KF、RbF、CsF、[N(CH(3))(4)][F] 反应制备的,和 NOF。BrO(3)F(2)(-) 阴离子是第四个以宏观数量分离的 Br(VII) 物种,它是仅有的三种具有 D(3)(h)() 的氧化物
氟化物之一对称性,其他是 XeO(3)F(2) 和 OsO(3)F(2)。BrO(3)F 的
氟离子受体特性与 ClO(3)F 的特性形成对比,ClO(3)F 不与强
氟离子供体 [N(CH(3))(4)][F] 反应形成类似的ClO(3)F(2)(-) 盐。[NO](2)[BrO(3)F(2)][F]和[N(CH(3))(4)][BrO(3)F(2)]的单晶X射线结构] 确认 BrO(3)F(2)(-) 阴离子的 D(3)(h)() 对称性并提供准确的 Br-O (1.593(3)-1.610(6) A) 和 Br-F