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DOI: 10.1039/A809099H (Paper) Reference Section for: J. Chem. Soc., Dalton Trans., 1999, 909-914

Reduction of substituted cyclopropenes by [Fe(H)H2(Me2PCH2CH2PMe2)2][BPh4], and the validity of these reactions as models for nitrogenase function

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David L. Hughes, G. Jeffery Leigh and C. Niamh Mc Mahon

Abstract

The complex [FeH(H2)(Me2PCH2CH2PMe2)2][BPh4] reacts with various substituted cyclopropenes to give mixtures of propenes and cyclopropanes. No further acid is required and the solvent, acetone, appears to be a ready source of protons. The only iron-containing product isolated is [{FeH(Me2PCH2CH2PMe2)2}2(µ-Me2PCH2CH2PMe2)][BPh4]2, the structure of which was determined by X-ray crystal structure analysis. Evidence that a direct iron–cyclopropene interaction is necessary for hydrocarbon reduction to occur is outlined and the validity of this iron system as a model for nitrogenase function is assessed.

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