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:
The compounds of every Wikipedia article carrying a Chembox or a Drugbox, refreshed daily, with the values their infoboxes give. The pages need JavaScript; the API does not.