A Nonclassical Dihydrogen Adduct of S = 1/2 Fe(I)

Y Lee, RA Kinney, BM Hoffman… - Journal of the American …, 2011 - ACS Publications
Y Lee, RA Kinney, BM Hoffman, JC Peters
Journal of the American Chemical Society, 2011ACS Publications
We have exploited the capacity of the “(SiP i Pr3) Fe (I)” scaffold to accommodate additional
axial ligands and characterized the mononuclear S= 1/2 H2 adduct complex (SiP i Pr3) FeI
(H2). EPR and ENDOR data, in the context of X-ray structural results, revealed that this
complex provides a highly unusual example of an open-shell metal complex that binds
dihydrogen as a ligand. The H2 ligand at 2 K dynamically reorients within the ligand-binding
pocket, tunneling among the energy minima created by strong interactions with the three Fe …
We have exploited the capacity of the “(SiPiPr3)Fe(I)” scaffold to accommodate additional axial ligands and characterized the mononuclear S = 1/2 H2 adduct complex (SiPiPr3)FeI(H2). EPR and ENDOR data, in the context of X-ray structural results, revealed that this complex provides a highly unusual example of an open-shell metal complex that binds dihydrogen as a ligand. The H2 ligand at 2 K dynamically reorients within the ligand-binding pocket, tunneling among the energy minima created by strong interactions with the three Fe–P bonds.
ACS Publications
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