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{{Chembox {{Chembox
| Verifiedfields = changed
⚫ | verifiedrevid = 385929346
| Watchedfields = changed
⚫ | verifiedrevid = 424305424
| ImageFile = Nitrosonium-tetrafluoroborate-2D.png | ImageFile = Nitrosonium-tetrafluoroborate-2D.png
| ImageSize =
| ImageAlt =
| IUPACName = nitrosonium tetrafluoroborate | IUPACName = nitrosonium tetrafluoroborate
| PIN =
| OtherNames = nitrosyl tetrafluoroborate | OtherNames = nitrosyl tetrafluoroborate
| Section1 = {{Chembox Identifiers |Section1={{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo = 14635-75-7
| PubChem = 151929 | CASNo = 14635-75-7
| UNII_Ref = {{fdacite|correct|FDA}}
| SMILES = }}
| UNII = B99S282SUJ
⚫ | Section2 = {{Chembox Properties
| PubChem = 151929
⚫ | N = 1 | O = 1 | B = 1 | F = 4
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
⚫ | Appearance = colourless crystalline solid
| ChemSpiderID = 9312255
⚫ | Density = 2.185 g&nbsp;cm<sup>−3</sup>
| SMILES = (F)(F)(F)F.N#
| MeltingPt = 250&nbsp;°C (sublimes)
| StdInChI_Ref = {{stdinchicite|changed|chemspider}}
| BoilingPt =
| StdInChI = 1S/BF4.NO/c2-1(3,4)5;1-2/q-1;+1
⚫ | Solubility = decomposes }}
| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}
| Section3 = {{Chembox Hazards
| StdInChIKey = KGCNVGDHOSFKFT-UHFFFAOYSA-N }}
| MainHazards =
⚫ |Section2={{Chembox Properties
| FlashPt =
⚫ | N=1 | O=1 | B=1 | F=4
| Autoignition = }}
⚫ | Appearance = colourless crystalline solid
⚫ | Density = 2.185 g&nbsp;cm<sup>−3</sup>
| MeltingPtC = 250
| MeltingPt_notes = (sublimes)
⚫ | Solubility = decomposes}}
}} }}


'''Nitrosonium tetrafluoroborate''', also called '''nitrosyl tetrafluoroborate''', is a ] with the ] NOBF<sub>4</sub>. This colourless solid finds use in ] as a ].<ref>{{ cite web | url = http://www.alfa.com/en/GP100W.pgm?DSSTK=A15806 | title = A15806 Nitrosonium tetrafluoroborate, 98% | work = ] website | accessdate = 2010-09-04 }}</ref> '''Nitrosonium tetrafluoroborate''', also called '''nitrosyl tetrafluoroborate''', is a ] with the ] NOBF<sub>4</sub>. This colourless solid is used in ] as a ], ] and a mild oxidant.<ref>{{Citation |last=Olah |first=George A. |title=Nitrosonium Tetrafluoroborate |date=2004-10-15 |work=Encyclopedia of Reagents for Organic Synthesis |editor-last=John Wiley & Sons, Ltd |url=https://onlinelibrary.wiley.com/doi/10.1002/047084289X.rn058.pub2 |access-date=2024-11-27 |place=Chichester, UK |publisher=John Wiley & Sons, Ltd |language=en |doi=10.1002/047084289x.rn058.pub2 |isbn=978-0-471-93623-7 |last2=Surya Prakash |first2=G. K. |last3=Wang |first3=Qi |last4=Li |first4=Xing-ya |last5=Surya Prakash |first5=G. K. |last6=Hu |first6=Jinbo}}</ref>


NOBF<sub>4</sub> is the ] of ], and is composed of a ] ], <sup>+</sup>, and a ] ], <sup>−</sup>. NOBF<sub>4</sub> is the ] of ], and is composed of a ] ], <sup>+</sup>, and a ] ], <sup>−</sup>.<ref>{{Cite journal |last=Lozinšek |first=Matic |date=2021-11-28 |title=Nitrosonium tetrafluoridoborate, NOBF4 |url=https://scripts.iucr.org/cgi-bin/paper?S2414314621012153 |journal=IUCrData |volume=6 |issue=11 |doi=10.1107/S2414314621012153 |issn=2414-3146 |pmc=9462292 |pmid=36337464}}</ref>


==Reactions== ==Reactions==
The dominant property of NOBF<sub>4</sub> is the oxidizing power and electrophilic character of the nitrosonium cation. It forms colored ]es with hexamethylbenzene and with ]. The latter, a deep yellow species, provides a means to dissolve NOBF<sub>4</sub> in dichloromethane.<ref>{{cite journal |doi=10.1021/ic00346a008|title=Redox equilibria of the nitrosonium cation and of its nonbonded complexes|year=1990|last1=Lee|first1=K. Y.|last2=Kuchynka|first2=D. J.|last3=Kochi|first3=Jay K.|journal=Inorganic Chemistry|volume=29|issue=21|pages=4196–4204}}</ref>
⚫ Nitrosonium tetrafluoroborate may be used to prepare metal salts of the type <sub>2</sub> (M = Cr, Mn, Fe, Co, Ni, Cu). The nitrosonium cation acts as the oxidizer, itself being reduced to nitric oxide gas:<ref>{{cite journal | doi = 10.1002/0471224502.ch2 | journal = ] | volume = 33 | pages = 75–83 | title = 11. Homoleptic Transition Metal Acetonitrile Cations with Tetrafluoroborate or Trifluoromethanesulfonate Anions | author = Robert A. Heintz, Jennifer A. Smith, Paul S. Szalay, Amy Weisgerber, And Kim R. Dunbar}}</ref> With ] the ] is formed.<ref>{{cite journal | title = Solvent and electrolyte effects on the kinetics of ferrocenium-ferrocene self-exchange. A reevaluation | author = Roger M. Nielson, George E. McManis, Lance K. Safford, Michael J. Weaver | journal = ] | doi = 10.1021/j100342a086 | year = 1989 | volume = 93 | issue = 5 | pages = 2152}}</ref>


⚫ Nitrosonium tetrafluoroborate may be used to prepare metal salts of the type <sub>2</sub> (M = Cr, Mn, Fe, Co, Ni, Cu). The nitrosonium cation acts as the oxidizer, itself being reduced to nitric oxide gas:<ref>{{cite journal | doi = 10.1002/0471224502.ch2 | journal = ] | volume = 33 | pages = 75–83 | title = 11. Homoleptic Transition Metal Acetonitrile Cations with Tetrafluoroborate or Trifluoromethanesulfonate Anions | first1=Robert A. | last1=Heintz | first2=Jennifer A. | last2=Smith | first3=Paul S. | last3=Szalay | first4=Amy | last4=Weisgerber | first5=Kim R. | last5=Dunbar | date=August 2004 | isbn=978-0-471-46075-6}}</ref>
: M + NOBF<sub>4</sub> + ''x''CH<sub>3</sub>CN &rarr; (BF<sub>4</sub>)<sub>2</sub> + NO

: {{chem2|M + 2NOBF4 + ''x''CH3CN → (BF4)2 + 2NO}}

With ] the ] is formed.<ref>{{cite journal | title = Solvent and electrolyte effects on the kinetics of ferrocenium-ferrocene self-exchange. A reevaluation |author1=Roger M. Nielson |author2=George E. McManis |author3=Lance K. Safford |author4=Michael J. Weaver | journal = ] | doi = 10.1021/j100342a086 | year = 1989 | volume = 93 | issue = 5 | pages = 2152}}</ref>

In its ] of this salt, ν<sub>NO</sub> is a strong peak at 2387 cm<sup>−1</sup>.<ref>{{cite journal |doi=10.1039/JR9630003557 |title=670. The Infrared Spectrum of the Nitrosonium Ion |date=1963 |last1=Sharp |first1=D. W. A. |last2=Thorley |first2=J. |journal=Journal of the Chemical Society (Resumed) |page=3557 }}</ref>


==References== ==References==
{{reflist}} {{reflist}}
{{Tetrafluoroborates}}

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