Die Kristallstruktur von AlI3 2 Pl3: ein P2I5+ AlI4−

Crystal Structure of AlI₃ · 2 PI₃:P₂I₅⁺ AlI₄^? The crystal structure of the title compound was determined from single crystal X-ray data. P₂I₅⁺AlI₄^? crystallizes in the orthorhombic space group Pbca, a = 1 088.3, b = 1 827.3, c = 2 031.6 pm, V = 4040 · 10⁶ pm³, Z = 8. The P₂I₅⁺ and AlI₄^? ions are connected by weak iodine-iodine bonds (I? I distances between 343.5 and 376.3 pm). The mean P? I and Al? I bond lengths were found to be 240.9 and 252.9 pm respectively.