Trinuclear iodobismuthate complex [Na-3(Me2CO)(12)][Bi3I12]: Synthesis and crystal structure

The reaction of BiI3 and NaI in acetone gives a trinuclear iodobismuthate complex, [Na-3(Me2CO)(12)][Bi3I12] (I), which was studied by X-ray diffraction (CIF file CCDC no. 996330). The centrosymmetric [Bi (3) (III) I-12](3-) anions are groups of three distorted {BiI6} octahedra coupled at the faces. The sodium cations combine six Me2CO molecules in the bidentate bridging mode to give linear trimers in which the side sodium ions coordinate six terminal acetone molecules.