Crystal structure of {μ2-1,2-bis-[(4-methyl-phenyl-sulfan-yl]-3-oxoprop-1-ene-1,3-di-yl-1:2κ2 C 3: C 1}dicarbon-yl-1κ2 C-[μ2-methyl-enebis(di-phenyl-phos-phane)-1:2κ2 P: P'](tri-phenyl-phosphane-2κ P)iron-platinum(Fe- Pt), [(OC)2Fe(μ-dppm){μ-C(=O)C(4-MeC6H4SCH2)=CCH2SC6H4Me-4}Pt(PPh3)]

Abstract

The title compound, [FePt(C₁₉H₁₈OS₂)(C₁₈H₁₅P)(C₂₅H₂₂P₂)(CO)₂], 1, [(OC)₂Fe(μ-dppm)(μ-C(=O)C(CH₂SC₆H₄Me-4)=CCH₂SC₆H₄Me-4)Pt(PPh₃)], 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-(p-tolyl-thio)-but-2-yne. The bridging μ₂-C(=O)C(CH₂SC₆H₄Me-4)=CCH₂SC₆H₄Me-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.

Keywords: bis­(di­phenyl­phosphino)methane; crystal structure; dimetallcyclo­pentenone; heterobimetallic; hydrogen bonding; inter­nal alkyne; iron; metal–metal bond; platinum; thio­ether.