Compounds of Complex Halo and Pseudohalo Acids of the Group IIB Metals, Part V [1] Preparative and Spectroscopic Studies of the [Hg2I5]-, [Hg2I6]2- and [Hg3I8]2- Ions

Previous efforts to prepare halogen-bridged anionic complexes of Hg(II) by the method of "etherohalogenosis" [2] met with failure in this department. Recently, however, we were able to isolate three new salts having the [Hg2ls]~, [Hg2le]2and [Hg3l8]~ ions; the present paper reports the preparation and characterization of these salts. Very few preparative and spectroscopic studies have been made on iodomercurate(II) complexes with dimeric or polymeric anionic structures [3-6]. It was pointed out by Deacon [7] that no cation appears to give both [Hg2ls]_ and [Hgsls]2 complex anions.