Influence of a pendant amine in the second coordination sphere on proton transfer at a dissymmetrically disubstituted diiron system related to the [2Fe]H subsite of [FeFe]H2ase

Inorg Chem. 2009 Jan 5;48(1):2-4. doi: 10.1021/ic801369u.

Abstract

Studies of the protonation of [Fe2(CO)4(kappa2-PNP)(mu-pdt)] (1; PNP = (Ph2PCH2)2NCH3) by HBF4.Et2O showed that the nature of the reaction product depends on whether the reaction is conducted in acetone or in dichloromethane. In acetone, an N-protonated form, 2, is isolated. Tautomerization of 2 in CH2Cl2 gives rise to a mu-hydride species 3. Variable-temperature NMR experiments have been performed to clarify the processes involved.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amines / chemistry*
  • Electrochemistry
  • Hydrogenase / chemistry*
  • Hydrogenase / metabolism
  • Iron / chemistry*
  • Iron-Sulfur Proteins / chemistry*
  • Iron-Sulfur Proteins / metabolism
  • Protons*

Substances

  • Amines
  • Iron-Sulfur Proteins
  • Protons
  • Iron
  • iron hydrogenase
  • Hydrogenase