Nitronium tetrafluoroborate
Chemical compound
From Wikipedia, the free encyclopedia
Nitronium tetrafluoroborate is an inorganic compound with formula NO2BF4. It is a salt of nitronium cation and tetrafluoroborate anion.[1] It is a colorless crystalline solid, which reacts with water to form the corrosive acids hydrogen fluoride (HF) and nitric acid (HNO3). As such, it must be handled under water-free conditions. It is sparsely soluble in many organic solvents.
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| Names | |
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| Other names
nitronium fluoroborate | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.034.107 |
| EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| NO2BF4 | |
| Molar mass | 132.81 g·molâ1 |
| Structure[1] | |
| monoclinic | |
| P21/c | |
a = 6.5567 Ã
, b = 6.8243 Ã
, c = 9.1244 Ã
α = 90.0°, β = 104.40°, γ = 90.0° | |
Lattice volume (V) |
395.44 |
Formula units (Z) |
4 |
| Hazards | |
| GHS labelling: | |
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| Danger | |
| H314, H317, H334 | |
| P260, P264, P272, P280, P285, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P304+P341, P305+P351+P338, P310, P321, P333+P313, P342+P311, P363, P405, P501 | |
| Safety data sheet (SDS) | |
| Related compounds | |
Other cations |
Nitrosonium tetrafluoroborate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Preparation
Nitronium tetrafluoroborate can be prepared by adding a mixture of anhydrous hydrogen fluoride and boron trifluoride to a nitromethane solution of nitric acid or dinitrogen pentoxide (N2O5).[2]
Applications
Nitronium tetrafluoroborate is used in organic synthesis as an electrophilic nitrating agent and a mild oxidant.[3]
