A five coordinate Fe⁰ complex, ^tSiP₃Fe(dmpe), has been prepared (^tSiP₃ = (CH₃)₃CSi(CH₂PCH₃)₃; dmpe = (CH₃)₂PCH₂CH₂P(CH₃)₂) for use as a model for granular iron, the reactive material in permeable reactive barriers. A preliminary experiment with benzyl bromide gave bibenzyl as a product to support an outer-sphere electron transfer mechanism. Comprehensive studies with halogenated hydrocarbons have been conducted to further explore the kinetics and mechanism of this complex through product analysis and radical trapping studies.