Bis(triethylsulfonium) Tetraiodocadmate(II)

The reaction of CdI₂ with an acetone solution of (Et₃S)I (molar ratio 1:2) gives the title compound. The structure of [(C₂H₅)₃S]₂CdI₄ contains discrete pyramidal Et₃S⁺ and tetrahedral CdI₄^2- ions. The bond distances of the two independent anions (Cd1-I1 and Cd2-I2) are 2.772 (1) and 2.784 (1) Å, respectively. The cation with approximate threefold symmetry is disordered such that each of the middle methylene groups takes two positions with a ratio of ca 2:1.

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