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‐C₅H_5?nMe_n)(μ‐CO)₃(CO)₈], where n = 1, 4 or 5, have a pseudo­tetrahedral MoIr₃ core geometry, with a η⁵‐C₅H_5?nMe_n group ligating the Mo atom, bridging carbonyls spanning the edges of an MoIr₂ face, and eight terminally bound carbonyls.