Tetraphenylphosphonium(arsonium) Octabromotriplumbate, Tetraphenylphosphonium Bromodichloroplumbate, Quantum Chemical Calculations [PhiPMPb^Brg] and [PhuAshtPb^Brg] crystallize both in the monoclinic space group Po2\ln. The lattice parameters of [PluPMPb^Brg] are a = 14.637(7), b = 8.151(3), c = 23.388(8) Ä, ß = 106.02(3)°, Z = 2 and of [PluAsMPbsBrg] are a = 14.697(7), b = 8.219(3), c = 23.527(8) A, ß = 106.27(3)°, Z = 2. The lattice parameters of [PhuPHPbBrClilCH^CN, which crystallizes in the triclinic space group (P I), are a = 9.435(3), b = 10.2577(14), c = 14.055(2) Ä, a = 88.320(11)°, ß = 84.82(2)°, 7 = 84.19(2)°, Z = 2. 207Pb NMR shifts of halogenoplumbates in solution are reported.