Iodoargentates and Cuprates Stabilized by Sulphonium Cations with Long Alkyl Chains

[DodMe 2 S] 2 2AgI 3 and [DodMe 2 S] Ag 2 I 3 were obtained from mixtures of dodecyldimethylsulfonium iodide and silver iodide in acetonitrile solution. [DodMe 2 S] 2 AgI 3 crystallizes in the orthorhombic crystal system, space group Pbca and contains trigonal planar anions AgI 3 2- , while [DodMe 2 S] Ag 2 I 3 crystallizes in the triclinic crystal system, space group P1, and consists of polymeric anions 1 ∞ (Ag 2 I 3 ) - . In both structures, the sulfonium cations form a layer of parallel and interpenetrating dodecyl chains with the sulfoniumdimethyl groups on both sides of the layer. [DodMe 2 S] 2 CuI 3 was obtained from dodecyldimethylsulfonium iodide and copper iodide mixtures and is isostructural with the corresponding silver compound.