The structures of [MPh4][BPh4], M = P, As and Sb, crystallize in a superstructure (I\overline 4, Z′ = 1/2) of the P\overline 421
c, Z′ = 1/4, structure known for MPh4, M = C, Si, Ge, Sn and Pb. The arrangement of the ions is the same as for CaWO4 (scheelite; I41/a, Z′ = 1/4), which is typical of many other ionic XYO4 structures. Crystals of [MPh4][BPh4] turn a pinkish amber when exposed to UV light; ESR spectra confirm that free radicals are generated.
M=P、As 和 Sb 的 [MPh4][BPh4]结构在 P\overline 421 的超结构(I\overline 4,Z′=1/2)中结晶。
c,Z′=1/4,为 MPh4 的已知结构,M=C、Si、Ge、Sn 和 Pb。离子的排列与 CaWO4(白钨矿;I41/a,Z′=1/4)相同,这是许多其他离子型 XYO4 结构的典型特征。在紫外线照射下,[MPh4][BPh4] 晶体会变成粉红琥珀色;ESR 光谱证实了自由基的产生。