Dicationic iron(II) complexes with dihydrogen trans to π-acid ligands: trans-[Fe(η2-H2)(L)(dppe) 2]2+ (L = CO or CNH). Is there Fe–H2 π-back bonding?

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Cameron E. Forde, Shaun E. Landau and Robert H. Morris


Abstract

The new, electron-deficient iron(II) dihydrogen complexes trans-[Fe(η2-H2)(L)(dppe)2 ]2+ (L = CO or CNH) were surprisingly stable with respect to the loss of H2 even though there is little Fe–H2 π-back bonding.


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