Carbon-carbon bond formation at a dinuclear iron center. 4. Synthesis of [Fe2(CO)6(.mu.-C(OR)H)(.mu.-CR'=CR'H)]- anions (R = Me, Et; R' = Ph, H) and the subsequent formation by protonation of the bridging vinylcarbene ligands >CHCR'=CR'H or >CR'CH=CR'H, depending on the reaction conditions | Publicación