Characterization of the Fe[BOND]H Bond in a Three-Coordinate Terminal Hydride Complex of Iron(I)


  • Funding was provided by the U.S. National Institutes of Health (GM065313 to P.L.H. and HL13531 to B.M.H.). We thank Dr. Boris Dzikovski of ACERT at Cornell University for preliminary EPR data, and Ryan Cowley and Sarina Bellows for helpful discussions.


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Three's company: Iron(I) hydride complexes are presented (see picture; N blue, O red) that are the first monomeric open-shell hydride complexes to be crystallographically verified as being three-coordinate at the metal. Backbonding into diketiminate π* orbitals stabilizes the low oxidation state. The Fe[BOND]H bonding has been analyzed using electron-nuclear double resonance (ENDOR).