Solvent-Dependent Reactivity of Fe(CO)₅ under Superacidic and Oxidative Conditions.

ABSTRACT: Herein, we report the solvent-dependent reactivity of Fe(CO)₅ toward AsF₅ in either anhydrous HF or liquid SO₂. The reaction of Fe(CO)₅ with the superacid HF/AsF₅ leads to the protonation of the iron center and allows for the first-time structural characterization of [FeH(CO)₅]⁺ in the solid state, representing one of the most acidic transition metal hydride complexes to ever be isolated and structurally characterized. In the aprotic but oxidation-stable solvent SO₂, Fe(CO)₅ is oxidized and dimerized to [Fe₂(CO)₁₀]²⁺, which is isoelectronic with well-known Mn₂(CO)₁₀. [Fe₂(CO)₁₀]²⁺ is the first structurally

SUBMITTER: Berg WR 

PROVIDER: S-EPMC11783529 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature