Abstract
The crystal structures of Ph 3Te(μ-S 2COMe) 2TePh 3 ( 1) and Ph 3Te(S 2CO( iBu)) ( 2) have been determined by X-ray diffraction. The two xanthate ligands bridge the two tellurium atoms in triphenyltellurium(IV) methylxanthate. The coordination environment around each Te atom of 1 is a distorted octahedron. The three TeC (phenyl) carbon atoms form one fac set and the two TeS bonds along with the lone pair form the other. The TeS bonds are long, suggesting that they are weak. The xanthate ligand in 2 is chelated with tellurium. The chelation of the iBUOCS − 2 skeleton is asymmetric and weak, the TeS bond lengths being 3.535(4) and 3.123(4) Å. The change in the mode of coordination of the xanthate ligand arises from the greater steric influence of the iBu group.
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