Crystal structure of {μ(2)-1,2-bis­[(4-methyl­phenyl­sulfan­yl]-3-oxoprop-1-ene-1,3-di­yl-1:2κ(2) C (3):C (1)}dicarbon­yl-1κ(2) C-[μ(2)-methyl­enebis(di­phenyl­phos­phane)-1:2κ(2) P:P′](tri­phenyl­phosphane-2κP)iron­platinum(Fe—Pt), [(OC)(2)Fe(μ-dppm){μ-C(=O)C(4-MeC(6)H(4)SCH(2))=CCH(2)SC(6)H(4)Me-4}Pt(PPh(3))]

The title compound, [FePt(C(19)H(18)OS(2))(C(18)H(15)P)(C(25)H(22)P(2))(CO)(2)], 1, [(OC)(2)Fe(μ-dppm)(μ-C(=O)C(CH(2)SC(6)H(4)Me-4)=CCH(2)SC(6)H(4)Me-4)Pt(PPh(3))], represents the first example of a diphosphane-bridged heterobimetallic Fe—Pt dimetalla­cyclo­pentenone complex resulting from a bimetallic activation of metal-coordinated carbonyl ligand with an inter­nal alkyne, namely 1,4-bis­(p-tolyl­thio)­but-2-yne. The bridging μ(2)-C(=O)C(CH(2)SC(6)H(4)Me-4)=CCH(2)SC(6)H(4)Me-4 unit (stemming from a carbon–carbon coupling reaction between CO and the triple bond of the alkyne di­thio­ether) forms a five-membered dimetalla­cyclo­pentenone 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.