The first complexes of cyanogen halides with silver(I): crystal structure of [Ag(NCCl)2][SbF6]

Abstract
The reactions of Ag[AsF6] or Ag[SbF6] with ClCN, BrCN, and ICN yield the complexes [Ag(NCCl)2][AsF6], [Ag(NCCl)2][SbF6], [Ag(NCBr)2][AsF6], [Ag(NCBr)2][SbF6], and [Ag(NCl)2][AsF6]. The salt [Ag(NCCl)2][SbF6] was characterized by an X-ray single-crystal structure investigation. The cation is monomeric. The cyanogen halide is bonded to the silver through nitrogen, with Ag–N 2.140(4)Å. The co-ordination geometry at silver is exactly linear.

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