subnitrates

Subnitrates are a class of chemical compounds that contain the subnitrate anion, [NO2]-. This anion is derived from nitrous acid, HNO2. Subnitrates are distinct from nitrates, which contain the nitrate anion, [NO3]-. The subnitrate anion has one fewer oxygen atom than the nitrate anion.

These compounds are generally less stable than their nitrate counterparts. Subnitrates can be formed through various chemical reactions, often involving the reduction of nitrates or nitrites. For example, certain metal nitrites can be reacted with reducing agents under specific conditions to yield subnitrates. The chemistry of subnitrates is not as extensively studied as that of nitrates or nitrites, partly due to their relative instability and limited applications.

Some subnitrate compounds have been synthesized and characterized in laboratory settings. Their properties can vary widely depending on the cation associated with the subnitrate anion. Like other nitrogen-oxygen compounds, subnitrates can exhibit oxidizing properties, though typically to a lesser extent than nitrates. Research into subnitrates often focuses on their synthesis, decomposition pathways, and potential applications in areas such as inorganic synthesis or materials science, though widespread industrial use is uncommon.