Alkin-induzierter Abbau von Fe₄P₂-Clustern / Alkyne Induced Fragmentation of Fe₄P₂ Clusters

Abstract

The unsaturated clusters Fe 4 (CO) 11 (μ 4 -PR) 2 (R = Ph, Tol) insert terminal alkynes HC 2 R′ (R′ = Me, Ph) between iron and phosphorus to form clusters Fe 4 (CO) 11 (μ 4 -PR)(μ 4 -RP−CR′−CH) in which according to a structure determination the RP -CR′−CH ligand has the phosphorus μ 2 -bridg­ing to two irons, the CR′−CH unit η 2 -bonding to the third and the CH unit o-bonding to the fourth iron. Under CO these clusters lose one iron unit to form Fe 3 (CO) 9 (PR)(RP−CR′−CH).