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Nitrosonium tetrafluoroborate

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Density
  
2.18 g/cm³

Pubchem
  
151929

Nitrosonium tetrafluoroborate httpsuploadwikimediaorgwikipediacommonsthu

Appearance
  
colourless crystalline solid

Nitrosonium tetrafluoroborate, also called nitrosyl tetrafluoroborate, is a chemical compound with the chemical formula NOBF4. This colourless solid finds use in organic synthesis as a nitrosating agent.

NOBF4 is the nitrosonium salt of fluoroboric acid, and is composed of a nitrosonium cation, [NO]+, and a tetrafluoroborate anion, [BF4]−.

Reactions

Nitrosonium tetrafluoroborate may be used to prepare metal salts of the type [MII(CH3CN)x][BF4]2 (M = Cr, Mn, Fe, Co, Ni, Cu). The nitrosonium cation acts as the oxidizer, itself being reduced to nitric oxide gas:

M + NOBF4 + xCH3CN → [M(CH3CN)x](BF4)2 + NO

With ferrocene the ferrocenium tetrafluoroborate is formed.

References

Nitrosonium tetrafluoroborate Wikipedia
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