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(PPh 4 ) 2 [Sb 2 Br 8 ] can be prepared from SbBr 3  and PPh 4 Br in CH 2 Br 2  or from Sb 2 S 3 , PPh 4 Br and HBr in 1,2-dichloroethane. Its crystal structure was de­termined with X-ray diffraction data (2764 observed reflexions, R = 0.039). Crystal data: triclinic, space group P1̄, a = 1024.9. b = 1127.1, c = 1282.4 pm, α = 111.80, β = 94.52, γ = 106.92°, Z = 1. The centrosymmetric [Sb 2 Br 8 ] 2-  ions consist of two square pyramids sharing a basal edge. The cations are grouped to (PPh 4  + ) 2  pairs similarly as in (PPh 4 ) 2 [As 2 Cl 8 ]; although the latter compound has a comparable general crystal packing, it is not isotopic. IR and Raman spectral data are reported.

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Notizen: Tetraphenylphosphonium-octabromodiantimonat, (PPh 4 ) 2 [Sb 2 Br 8 ]. Synthese und Kristallstruktur / Tetraphenylphosphonium Octabromodiantimonate, (PPh 4 ) 2 [Sb 2 Br 8 ]. Synthesis and Crystal Structure