Reaction of the high-spin iron(II) alkyl complex [{PhB(CH 2PiPr2)3}FeMe] with phenylsilane or mesitylsilane affords unusual diamagnetic silane adducts of the iron(II) hydride [{PhB(CH2PiPr2)3}FeH]. An η3 bonding mode in these silane adducts has been established by NMR spectroscopy, X-ray crystallography, and DFT methods. Rapid interconversion ofs the hydride positions in solution via a silylene intermediate is proposed. (Chemical Equation Presented)