3 years ago

Ferric Heme-Nitrosyl Complexes: Kinetically Robust or Unstable Intermediates?

Ferric Heme-Nitrosyl Complexes: Kinetically Robust or Unstable Intermediates?
Nicolai Lehnert, Ashley B. McQuarters, E. Ercan Alp, Michael Hu, Jiyong Zhao, Jeff W. Kampf
We devised a convenient method for the preparation of ferric heme-nitrosyl, {FeNO}6, complexes, based on the bulk oxidation of corresponding ferrous {FeNO}7 precursors, and we have demonstrated this approach for tetraphenylporphyrin complexes. The obtained {FeNO}6 complexes show high solution stability in the absence of NO gas and were characterized using structural and spectroscopic methods. We prepared and crystallized the chloro complex [Fe(TPP)(NO)(Cl)], which represents a key intermediate in the autoreduction reaction of ferric hemes.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01493

DOI: 10.1021/acs.inorgchem.7b01493

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