Silver tetrafluoroborate

Names
IUPAC name

Silver tetrafluoridoborate(1–)

Other names

Borate(1-), tetrafluoro-, silver(1+)
Argentous tetrafluoroborate

Identifiers

CAS Number

* 14104-20-2 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 140438 Y

EC Number |

* 237-956-5

PubChem CID

* 159722

RTECS number |

* ED2875000

InChI

* InChI=1S/Ag.BF4/c;2-1(3,4)5/q+1;-1 Y

Key: CCAVYRRHZLAMDJ-UHFFFAOYSA-N Y

* InChI=1/Ag.BF4/c;2-1(3,4)5/q+1;-1

Key: CCAVYRRHZLAMDJ-UHFFFAOYAH

SMILES

* [Ag+].F[B-](F)(F)F

Properties

Chemical formula

| AgBF4
Molar mass | 194.673 g/mol
Appearance  | Off-white powder
Odor | almost odorless
Density | 4.16 g/cm3
Melting point |  71.5 °C (160.7 °F; 344.6 K) (monohydrate)

Solubility in water

| soluble
Hazards
Safety data sheet | External MSDS
GHS pictograms |
GHS Signal word | Danger

GHS hazard statements

| H314

GHS precautionary statements

| P260, P264, P280, P301+330+331, P303+361+353, P304+340, P305+351+338, P310, P321, P363, P405, P501
NFPA 704 (fire diamond)  |

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Y verify (what is YN ?)
Infobox references

Silver tetrafluoroborate is an inorganic compound with the molecular formula AgBF4. It is a white solid, although commercial samples often are gray, that dissolves in polar organic solvents as well as water.[2]

## Contents

* 1 Structure
* 2 Preparation
* 3 Laboratory uses
* 4 References

## Structure

Packing of AgBF4. Color code: green = F, orange = B, blue = Ag

According to X-ray crystallography, the solid compound consists of Ag+ centers bound to four fluoride sites of the BF4−.[3]

## Preparation

Silver tetrafluoroborate can be prepared by several methods. A simple route entails dissolving silver carbonate in aqueous tetrafluoroboric acid.[4] It can also be produced by treating silver(I) fluoride with boron trifluoride in nitromethane solution. The reaction between boron trifluoride and a benzene suspension of silver oxide is yet another route, one that exploits the solubility of the compound in benzene. This method however affords silver fulminate, a sensitive explosive.[5]

## Laboratory uses

In the inorganic and organometallic chemistry laboratory, silver tetrafluoroborate, sometimes referred to "silver BF-4", is a used as a reagent to remove halide ligands and to oxidize electron-rich complexes. In dichloromethane, silver tetrafluoroborate is a moderately strong oxidant.[6] Similar to silver hexafluorophosphate, it is commonly used to replace halide anions or ligands with the weakly coordinating tetrafluoroborate anions. The abstraction of the halide is driven by the precipitation of the corresponding silver halide.

## References

1. ↑ "Silver tetrafluoroborate" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/159722#section=Safety-and-Hazards.
2. ↑ Wistrand, Lars-G.; Kerekes, Angela D.; Sannigrahi, Mousumi (2005). "Silver Tetrafluoroborate". Encyclopedia of Reagents for Organic Synthesis. doi:10.1002/047084289X.rs028.pub2. ISBN 0-471-93623-5.
3. ↑ Evgeny Goreshnik, Zoran Mazej, "X-ray single crystal structure and vibrational spectra of AgBF4" Solid State Sciences 2005, Volume 7, pp. 1225–1229. doi:10.1016/j.solidstatesciences.2005.06.007
4. ↑ Chalker, Justin M.; Thompson, Amber L.; Davis, Benjamin (2010). "Safe and Scalable Preparation of Barluenga's Reagent". Organic Syntheses 87: 288. doi:10.15227/orgsyn.087.0288.
5. ↑ Lemal, D. M; Fry, A. J. (1961-01-01). "The preparation of silver fluoroborate: a warning". Tetrahedron Letters 2 (21): 775–776. doi:10.1016/S0040-4039(01)99266-4. ISSN 0040-4039. https://www.sciencedirect.com/science/article/pii/S0040403901992664.
6. ↑ N. G. Connelly, W. E. Geiger (1996). "Chemical Redox Agents for Organometallic Chemistry". Chemical Reviews 96 (2): 877–910. doi:10.1021/cr940053x. PMID 11848774.

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* e

Silver compounds

Silver(0,I)|

* Ag2F

Silver(I)|

* AgBF4
* AgBr
* AgBrO3
* AgCN
* AgCNO
* AgCl
* AgClO
* AgClO2
* AgClO3
* AgClO4
* AgF
* AgI
* AgIO3
* AgMnO4
* AgNO2
* AgNO3
* AgN3
* Ag3N
* AgReO4
* AgSCN
* AgCF3SO3
* AgPF6
* Ag2CO3
* Ag2C2
* Ag2C2O4
* Ag2CrO4
* Ag2MoO4
* Ag2O
* Ag2S
* Ag2SO3
* Ag2S2O3
* Ag2SO4
* AgHSO4
* Ag2Se
* Ag2SeO3
* Ag2Te
* Ag3AsO4
* Ag3PO4
* KAg(CN)2
* RbAg4I5
* Ag(NH3)2NO3
* Ag2N2O2

| Organosilver(I) compounds|

* AgC2H3O2
* AgC22H43O2
* AgC4H3N2NSO2C6H4NH2

|

Silver(II)|

* AgF2

Silver(III)|

* Ag2O3
* AgF3
* Ag2S3

Silver(I,III)|

* Ag4O4

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Tetrafluoroborates

* AgBF4
* Ba(BF4)2
* C7H7BF4
* Cd(BF4)2
* CsBF4
* Cu(BF4)2
* [Et3O]BF4
* [FeCp2]BF4
* HBF4
* (IPy2)BF4
* KBF4
* LiBF4
* [Me3O]BF4
* NaBF4
* NH4BF4
* NOBF4
* NO2BF4
* (FTEDA)BF4
* Zn(BF4)2

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*[CID]: Compound ID
*[H314]: Causes severe skin burns and eye damage
*[P260]: Do not breathe dust/fume/gas/mist/vapours/spray
*[P264]: Wash … thoroughly after handling
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