The Preparation and X‐ray Crystal Structure of [(AgI2)n]⋅n MF6 (M=Sb, As): Diiodine Acting as a Donor in the Planar Polymeric [(AgI2)n]n+

Generous diiodine? [(AgI2)n]⋅n MF6 (M=Sb, As) prepared by the reactions of AgMF6 with I2 in liquid SO2, contain polymeric 1D chains [(AgI2)n]n+ stacked down the c axis separated by sheets of [MF6]− ions (see picture). The [(AgI2)n]n+ ion is the first example in which a dihalogen molecule is coordinated to an uncomplexed metal cation, that is, a metal dihalogen homoleptic species and is a simple and rare example of molecular diiodine acting as a donor.