A Bis-Cyclopentadienyl Ligand-Supported Di-Iron Trihydride Motif as a Synthon for Access to Heterobimetallic Trinuclear Complexes.

Herein, we report the synthesis of a flexible bis-cyclopentadienyl ligand L (the doubly deprotonated form of H 2 L (1,3-bis(2,4-di- tert -butylcyclopentadienyldimethylsilyl)benzene)), demonstrating its ability to stabilize a series of di-iron hydrido complexes. Notably, this ligand facilitates the isolation of an unprecedented anionic cyclopentadienyl ligand-supported di-iron trihydride complex, LFe 2 (μ-H) 3 Li(THF) ( 2 ), functioning as a synthon for the [Fe 2 (μ-H) 3 ] - core and providing access to heterobimetallic complexes 4 - 6 with coinage metals.