Nitroxyl
| Names | |
|---|---|
| IUPAC name
Azanone | |
| Systematic IUPAC name
Oxidanimine | |
| Other names
Hydrogen nitroxide Hydrogen oxonitrate(I) | |
| Identifiers | |
3D model (JSmol) |
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| ChEMBL | |
| ChemSpider | |
| MeSH | Nitroxyl |
PubChem CID |
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| UNII | |
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| Properties | |
| HNO | |
| Molar mass | 31.014 g·mol−1 |
| log P | 0.74 |
| Structure | |
| Digonal | |
| Bent | |
| Thermochemistry | |
Heat capacity (C) |
33.88 J K−1 mol−1 |
Std molar entropy (S⦵298) |
220.91 J K−1 mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Nitroxyl (common name) or azanone (IUPAC name) is the chemical compound HNO. It is well known in the gas phase. Nitroxyl can be formed as a short-lived intermediate in solution. Its conjugate base, NO−, the nitroxide anion, is the reduced form of nitric oxide (NO) and is isoelectronic with dioxygen. The bond dissociation energy of H−NO is 49.5 kcal/mol (207 kJ/mol), which is unusually weak for a bond to the hydrogen atom.