A series of iridium-stabilized selenocyclohexadienyls of general formula [CpIr((5)-C6H5-nMenSe)][BF4] {Cp = (5)-C5Me5, n = 0, n = 1, and n = 3} is described, with the selenocyclohexadienyl unit being isolated for the first time by -coordination to a CpIr moiety. The solid-state structure of one of [CpIr((5)-C6H2Me3Se)][BF4] was determined by single-crystal X-ray diffraction analysis. These compounds are obtained in good yields as orange-red microcrystalline solids by halogen displacement from the related -bonded arene-chlorinated starting materials using Na2Se as the selenium source. Furthermore, these new compounds display relevant cytotoxic properties towards human ovarian cancer cells.
Paul Joseph Dyson, Sarah Alexandra Pais Pereira
Kurt Schenk, Farzaneh Fadaei Tirani
Paul Joseph Dyson, Farzaneh Fadaei Tirani, Mouna Hadiji