Treatment of the complex [(CO) 6 Fe 2 EE'{μ-C(Ph) C-C(OEt) M(CO) 5 }], (1: E=S, E'=Se; M=Cr; 2: E=S, E'=Se; M=W; 3: E=E'=Te; M=Cr and 4: E=E'=Te; M=W), with excess Bu 3 SnH in hexane at 0 o C produces enol ether derivatives: (CO) 6 Fe 2 {μ-EC(Ph)(H)-C(E') C(H)(OEt)} (E/Z-5: E=S, E'=Se and E/Z-6: E=E'=Te). All the compounds have been characterised by IR and 1 H-, 1 3 C- or 7 7 Se-NMR spectroscopy. The structure of [(CO) 6 Fe 2 Te 2 {μ-(Ph)C CC(OEt)}W(CO) 5 ] has been established crystallographically.