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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.
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| Names | |
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| IUPAC name
Iron(II) tetrafluoroborate
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Other names
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| Identifiers | |
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3D model (JSmol)
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| ECHA InfoCard | 100.035.736 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Fe(BF4)2 | |
| Molar mass | 229.46 g/mol (anhydrous) 337.55 g/mol (hexahydrate) |
| Appearance | Light green crystals (hexahydrate) |
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| Hazards | |
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| 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).
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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
edit- ^ 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.