[FeHCl(C₁₀H₂₄P₂)₂]

trans-Chlorobis[ethylenebis(diethylphosphine-P)]hydridoiron(II), [FeHCl(depe)₂] (depe = C₁₀H₂₄P₂), has been prepared from [FeCl₂(depe)₂] and sodium-naphthalene in tetrahydrofuran solution under nitrogen. The structural characterization of the title compound represents the first of an iron(II) hydride halide complex having a P₄ donor set. The Fe centre is surrounded by one hydride ligand, one Cl atom, trans to the hydride, and two bis(phosphine) ligands within a distorted octahedron. The trans geometry has also been confirmed in solution by NMR spectroscopy.

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