Crystal structure of {μ-1,2-bis-[(4-methyl-phenyl-sulfan-yl]-3-oxoprop-1-ene-1,3-di-yl-1:2κ : }dicarbon-yl-1κ -[μ-methyl-enebis(di-phenyl-phos-phane)-1:2κ :'](tri-phenyl-phosphane-2κ)iron-platinum(-), [(OC)Fe(μ-dppm){μ-C(=O)C(4-MeCHSCH)=CCHSCHMe-4}Pt(PPh)].

The title compound, [FePt(CHOS)(CHP)(CHP)(CO)], , [(OC)Fe(μ-dppm)(μ-C(=O)C(CHSCHMe-4)=CCHSCHMe-4)Pt(PPh)], represents the first example of a diphosphane-bridged heterobimetallic Fe-Pt dimetalla-cyclo-pentenone complex resulting from a bimetallic activation of metal-coordinated carbonyl ligand with an inter-nal alkyne, namely 1,4-bis-(-tolyl-thio)-but-2-yne. The bridging μ-C(=O)C(CHSCHMe-4)=CCHSCHMe-4 unit (stemming from a carbon-carbon coupling reaction between CO and the triple bond of the alkyne di-thio-ether) forms a five-membered dimetalla-cyclo-pentenone ring, in which the C=C bond is π-coordinated to the Fe center. The latter is connected to the Pt center through a short metal-metal bond of 2.5697 (6) Å.