Synthesis and fluxional character of derivatives of the type [HFe3(CO)10(µ2-CNR2)] and [HFe3(CO)9(µ3-CHNR)]

Abstract

Isonitrile substitution at room temperature of [PPN][HFe₃(CO)₁₁][PPN =(Ph₃P)₂N⁺] to yield the substituted anion [PPN][HFe₃(CO)₁₀(CNR)], followed by protonation or alkylation, gives complexes of the type [HFe₃(CO)₁₀(µ₂-CNR¹R²)](R¹= alkyl, R²= Et,H) which exhibit resricted rotation about the C-N bond; at higher temperatures, products resulting from isonirile nisertion into the M-H bond may be observed.