my-server
← Wiki

Potassium tetracarbonyliron hydride

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

H<sub>2</sub>Fe(CO)<sub>4</sub> + KOH → K[HFe(CO)<sub>4</sub>] + H<sub>2</sub>O

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

Fe(CO)<sub>5</sub> + 2 KOH → K[HFe(CO)<sub>4</sub>] + KHCO<sub>3</sub>

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

K[HFe(CO)<sub>4</sub>] + 3 PBu<sub>3</sub> + EtOH → Fe(CO)<sub>2</sub>(PBu<sub>3</sub>)<sub>3</sub> + EtOK + 2 CO + H<sub>2</sub>

References