[HMe2pipdt]I3 (Me2pipdt = N,N′-dimethyl-piperazine-2,3-dithione, 1) is capable to quantitatively dissolve elemental Cd and Hg to produce in a one-step reaction the [CdI(Me2pipdt)2]I3 (2) and [HgI2(Me2pipdt)] (3) complexes. Crystals of 2 and 3 have been structurally characterized and crystallize in the P-1 and C2/c space group respectively. In 2 Cd(II) shows a coordination geometry intermediate between the square pyramidal and the trigonal bipyramidal. In 3 Hg(II) adopts a distorted tetrahedral geometry which involves a S,S chelating ligand and two iodine atoms in the coordination sphere. Vibrational spectroscopy findings are in agreement with structural results showing in the far-infrared region to be a diagnostic probe in recognizing triiodides.
Effective one-step removal-inertization of hazardous metals (Cd and Hg) by environmental friendly reagents / M.L. Mercuri; A. Serpe; L. Marchio'; F. Artizzu; D. Espa; P. Deplano. - In: INORGANIC CHEMISTRY COMMUNICATIONS. - ISSN 1387-7003. - 39(2014), pp. 47-50. [10.1016/j.inoche.2013.10.045]
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