Syntheses and structures of mono-, di- and tetranuclear rhodium or iridium complexes of thiacalix[4]arene derivatives

The reactions of [Cp*MCl2]2(Cp*=(eta)^5-C5Me5, M = Rh, Ir) with thiacalix[4]arene (TC4A(OH)4) and tetramercaptothiacalix[4]Aarene (TC4A(SH)4) gave the mononuclear complexes [(Cp*M){(eta)^3-TC4A(OH)2(O)2}] and the dinuclear complexes [(Cp*M)2{(eta)^3:(eta)^3-TC4A(S)4}] respectively, while the analogous reactions with dimercaptothiacalix[4]arene (TC4A(OH)2(SH)2) produced the tetranuclear complexes [(Cp*M)2(Cp*MCl2)2-{(eta)^3:(eta)^3:(eta)^1:(eta)^1-TC4A(O)2(S)2}].