Nitronate
A nitronate (IUPAC: azinate) in organic chemistry is an anion with the general structure R1R2C=N+(−O−)2, containing the =N+(−O−)2 functional group, where R can be hydrogen, halogen, organyl group or other groups. It is the anion of nitronic acid R1R2C=N+(−O−)−OH (sometimes also called an aci-nitro compound, or an azinic acid), a tautomeric form of a nitro compound.