On the reactions of the tetraindium cluster In4[C(SiMe3)3]4: Insertion of the monomeric fragments InC(SiMe3)3 into chalcogen–chalcogen bonds

Treatment of the tetraindium cluster In4[C(SiMe3)3]4 (1) with diaryl dichalcogenides Aryl-E-E-Aryl (E = S, Se and Te) afforded the corresponding RIn(E-Aryl)2 [R = C(SiMe3)3] compounds by insertion of the monomeric fragments InR into the chalcogen–chalcogen bonds. The dimeric formula units adopt different conformations in the solid state (Ci vs. C2 h).