[CrBr2(NH3)4][CrBr4(NH3)2], a new chromium(III) complex
摘要:
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 center dot center dot center dot Br interactions. This is the first example in which both ions are mixed ammine-bromide Cr-III complexes.