A nitronate 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⁺−OH, a... Wikipedia