Synthesen und Kristallstrukturen von Tris(di-n-propylamino)-p-brombenzylphosphonium-bromiden: [(C3H7)2N]3PCH2C6H4Br+Br- und [(C3H7)2N]3PCH2C6H4Br+Br3-/Syntheses and Crystal Structures of Tris(di-n-propylamino)-p-bromobenzyl-phosphonium Bromides: [(C3H7)2N]3PCH2C6H4Br+Br- and [(C3H7)2N]3PCH2C6H4Br+Br3-
2014
Nolte, Jacqueline | Neubauer, P. | Vogt, H. | Meisel, M.
Tris(di-n-propylamino)-p-bromobenzylphosphonium bromide [(C₃H₇)₂N]₃PCH₂C₆H₄Br⁺- Br⁻ (1) has been prepared by the reaction of tris(di-n-propylamino)phosphine with p-bromobenzylbromide in methylene chloride. The colorless crystals are monoclinic, space group P2₁, Z = 2, a = 930.2(3), b = 1501.2(3), c = 1093.5(2) pm, β = 105,97(4)°. The lattice contains Br⁻ anions and [(C₃H₇)₂N]₃PCH₂C₆H₄Br⁺ cations. [(C₃H₇)₂N]₃PCH₂C₆H₄Br⁺Br⁻ (2) has been obtained by treating 1 with equimolar quantities of elemental bromine in methylene chloride solution. The yellow-red crystals of 2 are triclinic, space group P1̄, Z = 2, a = 1069.5(3), b = 1267.7(7), c = 1273.7(3) pm, α= 87.27(3), β = 82,67, γ = 67.15°, and consist of [(C₃H₇)₂N]₃PCH₂C₆H₄Br⁺ cations and linear Br₃⁻ anions. The three N atoms in the cations of 2 are planar.
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