(Cobaltoceniumyl-amido)-pyridinium hexa-fluorido-phosphate

Abstract

The title compound, [Co(C₅H₅)(C₁₀H₉N₂)]PF₆, was synthesized from deproton-ated 1-amino-pyridinium iodide, followed by microwave-assisted nucleophilic aromatic substitution of iodo-cobaltocenium iodide. After anion exchange with potassium hexa-fluorido-phosphate, the title compound crystallizes as orange prisms in the space group Pc. This very stable pyridine nitrene adduct is the first example of a cobaltocenium derivative, formally containing a nitrene nitro-gen species.

Keywords: cobalt; cobaltocenium; crystal structure; microwave-assisted synthesis; ylide.