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Iron(II) tetrafluoroborate
Names
Systematic IUPAC name
iron(2+);ditetrafluoroborate
Other names
  • Ferrous tetrafluoroborate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.736 Edit this at Wikidata
EC Number
  • (anhydrous): 239-327-0
  • InChI=1S/2BF4.Fe/c2*2-1(3,4)5;/q2*-1;+2
    Key: GXZXLFFLHJJJLX-UHFFFAOYSA-N
  • (anhydrous): [B-](F)(F)(F)F.[B-](F)(F)(F)F.[Fe+2]
Properties
Fe(BF4)2
Molar mass 229.46 g/mol (anhydrous)
337.55 g/mol (hexahydrate)
Appearance Light green crystals
(hexahydrate)
Soluble
Hazards
GHS labelling:
GHS07: Exclamation markGHS05: Corrosive
Danger
H302, H312, H314, H332
P260, P261, P264, P270, P271, P280, P301+P312, P301+P330+P331, P302+P352, P303+P361+P353, P304+P312, P304+P340, P305+P351+P338, P310, P312, P321, P322, P330, P363, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iron(II) tetrafluoroborate or ferrous tetrafluoroborate is an inorganic chemical with chemical formula Fe(BF4)2. Both the anhydrous form and a hexahydrate are known. The hexahydrate and aqueous solutions are green. Tetrafluoroborate is generally a weakly coordinating anion, so iron(II) tetrafluoroborate is used as the starting material for forming various other iron(II) coordination complexes.

For example, a complex composed of iron(II) tetrafluoroborate and the ligand tris[2-(diphenylphosphino)-ethyl]phosphine catalyzes the transfer hydrogenation of various aldehydes to give the corresponding primary alcohols, using formic acid as hydrogen donor.[1]

References

  1. ^ Gerrit Wienhöfer; Felix A.Westerhaus; Kathrin Junge; Matthias Beller (2013). "Fast and selective iron-catalyzed transfer hydrogenations of aldehydes". Journal of Organometallic Chemistry. 744: 156–159. doi:10.1016/j.jorganchem.2013.06.010.
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