Based on a "transition metal frustrated Lewis pair" approach, a cyclopentadienone iron tricarbonyl complex has been designed and applied in the reductive amination and hydrogenation of bicarbonate. This well-defined phosphine-free complex displays the best activities reported to date for an iron complex in the reduction of bicarbonate into formate and in reductive amination.

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The newly developed title complex proves efficient in the reductive amination of various aldehydes and ketones with primary aliphatic and aromatic amines as well as secondary amines.

The single-crystal X-ray structure analysis of [RuCl2(C12H18)(C5H7NO)] reveals a distorted piano-stool geometry around the RuII atom, with a hexa­methyl­benzene ligand, two chloride ligands and a furfuryl­amine ligand, the latter coordinating through the amine group. In the crystal, a dimeric structure is observed as a result of N—H⋯Cl inter­actions between two symmetry-related mol­ecules.