Nitronium tetrafluoroborate

Nitronium tetrafluoroborate is an inorganic compound with formula NO2BF4. It is a salt of nitronium cation and tetrafluoroborate anion. It is a colorless crystalline solid, which reacts with water to form the corrosive acids HF and HNO3. As such, it must be handled under water-free conditions. It is sparsely soluble in many organic solvents.

Nitronium tetrafluoroborate
Names
Other names
nitronium fluoroborate, NO
2
BF
4
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.034.107 Edit this at Wikidata
EC Number
  • 237-533-5
  • InChI=1S/BF4.NO2/c2-1(3,4)5;2-1-3/q-1;+1
    Key: RGVZMPONLYFINH-UHFFFAOYSA-N
  • [B-](F)(F)(F)F.[N+](=O)=O
Properties
BNO2F4
Molar mass 132.81
Hazards
GHS labelling:
GHS05: CorrosiveGHS07: Exclamation markGHS08: Health hazard
Danger
H314, H317, H334
P260, P261, 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) [1]
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

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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.[1]

Applications

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Nitronium tetrafluoroborate is used as a nitration agent.

References

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  1. ^ Kenneth Schofield (1980). Aromatic nitration. CUP Archive. p. 88. ISBN 0-521-23362-3.