Undecacarbonyl(methylcyclopentadienyl)‐tetrahedro‐triiridiummolybdenum, undecacarbonyl(tetramethylcyclopentadienyl)‐tetrahedro‐triiridiummolybdenum and undecacarbonyl(pentamethylcyclopentadienyl)‐tetrahedro‐triiridiummolybdenum

The three title compounds tri‐μ‐carbonyl‐1:2κ2C;1:3κ2C;2:3κ2C‐octacarbonyl‐1κC,2κ2C,3κ2C,4κ3C‐η5‐methylcyclopentadienyl‐tetrahedro‐triiridiummolybdenum(3 Ir—Ir)(3 Ir—Mo), tri‐μ‐carbonyl‐1:2κ2C;1:3κ2C;2:3κ2C‐octacarbonyl‐1κC,2κ2C,3κ2C,4κ3C‐η5‐tetramethylcyclopentadienyl‐tetrahedro‐triiridiummolybdenum(3 Ir—Ir)(3 Ir—Mo) and tri‐μ‐carbonyl‐1:2κ2C;1:3κ2C;2:3κ2C‐octacarbonyl‐1κC,2κ2C,3κ2C,4κ3C‐η5‐pentamethylcyclopentadienyl‐tetrahedro‐triiridiummolybdenum(3 Ir—Ir)(3 Ir—Mo), [MoIr3(η5‐C5H5−nMen)(μ‐CO)3(CO)8], where n= 1, 4 or 5, have a pseudo­tetrahedral MoIr3core geometry, with a η5‐C5H5−nMengroup ligating the Mo atom, bridging carbonyls spanning the edges of an MoIr2face, and eight terminally bound carbonyls.