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Iron(II) tetrafluoroborate

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Iron(II) tetrafluoroborate
Names
IUPAC name Iron(II) tetrafluoroborate
Other names
  • Ferrous tetrafluoroborate
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.035.736 Edit this at Wikidata
EC Number
  • (anhydrous): 239-327-0
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2BF4.Fe/c2*2-1(3,4)5;/q2*-1;+2Key: GXZXLFFLHJJJLX-UHFFFAOYSA-N
SMILES
  • (anhydrous): (F)(F)(F)F.(F)(F)(F)F.
Properties
Chemical formula Fe(BF4)2
Molar mass 229.46 g/mol (anhydrous)
337.55 g/mol (hexahydrate)
Appearance Light green crystals
(hexahydrate)
Solubility in water Soluble
Hazards
GHS labelling:
Pictograms GHS07: Exclamation markGHS05: Corrosive
Signal word Danger
Hazard statements H302, H312, H314, H332
Precautionary statements 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 , 100 kPa). Infobox references
Chemical compound

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 trisphosphine catalyzes the transfer hydrogenation of various aldehydes to give the corresponding primary alcohols, using formic acid as hydrogen donor.

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.
Iron compounds
Fe(−II)
Fe(0)
Fe(I)
Organoiron(I) compounds
  • (C5H5FeCO)2(CO)2
  • Fe(0,II)
    Fe(II)
    Organoiron(II) compounds
    Fe(0,III)
    Fe(II,III)
    Fe(III)
    Organoiron(III) compounds
    Fe(IV)
    Fe(VI)
    Purported
    sort
    Salts and covalent derivatives of the tetrafluoroborate ion
    HBF4 He
    LiBF4 Be B C7H7BF4
    BF4
    BF4
    (TEDA)BF4
    NOBF4
    NO2BF4
    NH4BF4
    O F Ne
    NaBF4 Mg(BF4)2 Al Si P S Cl Ar
    KBF4 Ca(BF4)2 Sc Ti V (BF4)3
    (BF4)2
    Mn(BF4)2 Fe(BF4)2
    FeO(BF4)2
    BF4
    Co(BF4)2 Ni(BF4)2
    (BF4)2
    Cu(BF4)2 Zn(BF4)2 Ga Ge As Se Br Kr
    RbBF4 Sr(BF4)2 Y Zr Nb (BF4)4
    (BF4)4
    (BF4)4 (BF4)2 (BF4)3
    (BF4)4
    (BF4)2 AgBF4 Cd(BF4)2 In(BF4)3 Sn(BF4)2 Sb Te (IPy2)BF4 Xe
    CsBF4 Ba(BF4)2 * Lu Hf Ta W Re Os Ir Pt(BF4)2 Au Hg(BF4)2 TlBF4 Pb(BF4)2 Bi Po At Rn
    Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
     
    * La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb
    ** Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No
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