Tetraphenylphosphonium-hexachlorodizinkat und -hexachlorodicadmat, (PPh₄)₂Zn₂Cl₆ und (PPh₄)₂Cd₂Cl₆ / Tetraphenylphosphonium Hexachlorodizincate and Hexachlorodicadmate, (PPh₄)₂Zn₂Cl₆ and (PPh₄)₂Cd₂Cl₆

Abstract

The title compounds were obtained by the reactions of PPh 4 Cl, HCl and ZnS or CdS in CH 2 Cl 2 . Their crystal structures were determined by X-ray diffraction. (PPh 4 ) 2 Zn 2 Cl 6 : a = 973.6(1). b = 982.6(2), c = 1296.7(3) pm, α = 107.93(2), β = 94.50(2), γ = 100.91(2)°, R = 0.036 for 2237 unique observed reflexions. (PPh 4 ) 2 Cd 2 Cl 6 : a = 977.1(2), b = 997.5(3). c = 1306.6(3) pm. α = 108.81(2), β = 94.18(2), γ = 100.24(2)°, R = 0.050 for 1921 reflexions. Both compounds are isotypic in the triclinic space group P1̄ and consist of PPh 4 + ions and dimeric, centrosymmetric M 2 Cl 6 - ions in which the tetrahedrally coordinated metal atoms are linked via chloro bridges.