Crystal structure of dicarbon-yl[μ₂-methyl-enebis(di-phenyl-phosphane)-κ² P: P'][μ₂-2-(2,4,5-tri-methyl-phen-yl)-3-oxoprop-1-ene-1,3-di-yl](tri-phenyl-phosphane-κ P)ironplatinum(Fe- Pt)-di-chloro-methane-toluene (1/1/2), [(OC)₂Fe(μ-dppm)(μ-C(=O)C(2,4,5-C₆H₂Me₃)=CH)Pt(PPh₃)]

The title compound, [FePt(C₁₂H₁₂O)(C₁₈H₁₅P)(C₂₅H₂₂P₂)(CO)₂]·2C₇H₈·CH₂Cl₂ or [(OC)₂Fe(μ-dppm)(μ-C(=O)C(2,4,5-C₆H₂Me₃)=CH)Pt(PPh₃)], represents an example of a diphosphane-bridged heterobimetallic dimetalla-cyclo-pentenone complex resulting from a bimetallic activation of 1-ethynyl-2,4,5-tri-methyl-benzene and a metal-coordinated carbonyl ligand. The bridging μ₂-C(=O)C(2,4,5-C₆H₂Me₃)=CH unit (stemming from a carbon-carbon coupling reaction between CO and the terminal alkyne) forms a five-membered dimetalla-cyclo-pentenone ring, in which the C=C bond is π-coordinated to the Fe centre. The latter is connected to the Pt centre through a short metal-metal bond of 2.5770 (5) Å. In the crystal, the complex is solvated by one di-chloro-methane and two toluene mol-ecules.