Structure via PubChem · Public domain (PubChem)
dinitrogen trioxide
Also known as N2O3, Nitrous anhydride, Nitrogen sesquioxide, O2NNO
chemical compound
Chemical data
- Formula
- N2O3
- Molecular weight
- 76.012 g/mol
- IUPAC name
- N-oxonitramide
- SMILES
- N(=O)[N+](=O)[O-]
- InChIKey
- LZDSILRDTDCIQT-UHFFFAOYSA-N
- XLogP
- -0.1
- Polar surface area
- 75.3 Ų
- H-bond donors
- 0
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
- 75.991
~2 min read
Article
Dinitrogen trioxide (also known as nitrous anhydride) is the inorganic compound with the formula N2O3. It is a nitrogen oxide. It forms upon mixing equal parts of nitric oxide and nitrogen dioxide and cooling the mixture below −21°C (−6°F):
NO + NO 2 ⇌ N 2O 3 Dinitrogen trioxide is only isolable at low temperatures (i.e., in the liquid and solid phases). In liquid and solid states, it has a deep blue color. At higher temperatures the equilibrium favors the constituent gases, with KD = 193 kPa (25°C).