A. Baby et al., CONVENIENT PREPARATION AND USE OF POTASSIUM TETRACARBONYLFERRATE, K2[FE(CO)4], AN EASY-TO-HANDLE ANALOG OF THE COLLMAN REAGENT, Synthetic communications, 24(20), 1994, pp. 2827-2834
A convenient synthesis of K2[Fe(CO)4] from Fe(CO)5, KOH and tri(n-buty
l)phosphine is described. This non-pyrophoric dianionic potassium ferr
ate displays the same reactivity as Na2[Fe(CO)4], provided that the re
actions are conducted in DMAC or THF-DMAC solvent mixtures.