[CrBr2(NH3)4][CrBr4(NH3)2], a new chromium(III) complex

Green single crystals of trans‐tetraamminedibromidochromium(III) trans‐diamminetetrabromidochromate(III), [CrBr₂(NH₃)₄][CrBr₄(NH₃)₂], are found to contain two symmetry‐independent sixfold coordinated Cr^III cations on centres of inversion. The structure is composed of octahedral trans‐[CrBr₂(NH₃)₄]⁺ cations and octahedral trans‐[CrBr₄(NH₃)₂]⁻ anions, and adopts a distorted CsCl‐type lattice. The cations and anions are linked by N—H...Br interactions. This is the first example in which both ions are mixed ammine–bromide Cr^III complexes.