Silver tetrafluoroborate

Silver tetrafluoroborate is an inorganic compound with formula AgBF₄. It is a white solid that dissolves in polar organic solvents as well as water. In solid, the Ag⁺ centers are bound to fluoride.

Preparation

Silver tetrafluoroborate is prepared by the reaction between boron trifluoride and silver oxide in the presence of benzene.

Laboratory uses

In the inorganic and organometallic chemistry laboratory, silver tetrafluoroborate, sometimes referred to "silver BF-4", is a useful reagent. In dichloromethane, silver tetrafluoroborate is a moderately strong oxidant. 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 appropriate silver halide.

References

1. ^ Evgeny Goreshnik, Zoran Mazej, "X-ray single crystal structure and vibrational spectra of AgBF₄" Solid State Sciences 2005, Volume 7, pp. 1225â€"1229. doi:10.1016/j.solidstatesciences.2005.06.007
2. ^ N. G. Connelly, W. E. Geiger (1996). "Chemical Redox Agents for Organometallic Chemistry". Chemical Reviews 96 (2): 877â€"910. doi:10.1021/cr940053x. PMID 11848774. 

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