On the reactions of the tetraindiumcluster In4[C(SiMe3)3]4 with phenylselenium and phenyltellurium bromides

The tetraindiumcluster In4[C(SiMe3)3]41 reacted with phenylselenium bromide and phenyltellurium bromide by the insertion of InR groups into the chalcogen–bromine bonds. The oxidation state of the indium atoms increased from +1 to +3. Compounds were obtained in which the indium atoms bear three different substituents (alkyl groups, phenylchalcogenido ligands, and bromine atoms). The products form dimers in the solid state via In–Se–In and In–Te–In bridges, respectively, and the bromine atoms are in terminal positions.