(Cobaltoceniumylamido)pyridinium hexafluoridophosphate

Abstract

The title compound, [Co(C5H5)(C10H9N2)]PF6, was synthesized from deprotonated 1-aminopyridinium iodide, followed by microwave-assisted nucleophilic aromatic substitution of iodo-cobaltocenium iodide. After anion exchange with potassium hexafluoridophosphate, 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 nitrogen species.