Darstellung und Kristallstruktur von Gold(III)selenitchlorid, Au(SeO₃)Cl/Preparation and Crystal Structure of Gold(III) Selenite Chloride, Au(SeO₃)Cl

Au(SeO 3 )Cl was prepared in a sealed-tube synthesis from Au 2 Se 4 O 11 , selenic acid and perchloric acid. The crystal structure was determined (P1̄, a = 418.5(1), b = 975.6(4), c = 1060.8(5) pm, α = 80.57(2), β = 88.85(2), γ = 87.66(2)°, Z = 4, R = 0.06 for 2273 observed reflections). There are three independent gold atoms in the structure, belonging to AuO 4 , AuO 2 Cl 2 and AuO 3 Cl units respectively. The oxygen atoms bridge Au and Se, leading to a polymeric layer structure.