Potassium tetracarbonyliron hydride

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Potassium tetracarbonyliron hydride
Names
Other names
potassium tetracarbonylhydroferrate(1-)
Identifiers
3D model (
JSmol
)
  • InChI=1S/4CO.Fe.K.H/c4*1-2;;;/q;;;;-1;+1;
    Key: ZCWNHXZCHBPQAK-UHFFFAOYSA-N
  • [C-]#[O+].[C-]#[O+].[C-]#[O+].[C-]#[O+].[K+].[Fe][H-]
Properties
C4HFeKO4
Molar mass 207.991 g·mol−1
Appearance yellow solid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Potassium tetracarbonyliron hydride is the inorganic salt with the formula K[HFe(CO)4]. A pale yellow solid, it is the potassium salt of [HFe(CO)4]−, which is the conjugate base of iron tetracarbonyl dihydride:[1][2]

H2Fe(CO)4 + KOH → K[HFe(CO)4] + H2O

Potassium tetracarbonyliron hydride is prepared by treating iron pentacarbonyl with potassium hydroxide:[3]

Fe(CO)5 + 2 KOH → K[HFe(CO)4] + KHCO3

Potassium tetracarbonyliron hydride is an intermediate in the synthesis of trisubstituted phosphine complexes:[4]

K[HFe(CO)4] + 3 PBu3 + EtOH → Fe(CO)2(PBu3)3 + EtOK + 2 CO + H2

References

  1. doi:10.1016/S0010-8545(98)00075-7
    .
  2. doi:10.1021/cr00104a006
    .
  3. ISBN 9780470132609
    .
  4. ISBN 9780470132623
    .
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