Oxygen Binding to Cobalt Porphyrins

James P. Collman, John I. Brauman, Kenneth M. Doxsee, Thomas R. Halbert, Susan E. Hayes, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review

Abstract

The thermodynamic constants of oxygen binding to cobalt “picket fence” porphyrin complexes, meso-tetra(α,α,α,α-o-pivalamidophenyl)porphyrinatocobalt(II)-1-methylimidazole and 1,2-dimethylimidazole, are reported. In contrast to previously studied cobalt porphyrins, these complexes bind oxygen with the same affinity as cobalt substituted myoglobin and hemoglobin. Solvation effects are discussed as the source of this difference. The use of sterically hindered axial bases as models of T state hemoglobin is discussed.

Original languageEnglish (US)
Pages (from-to)2761-2766
Number of pages6
JournalJournal of the American Chemical Society
Volume100
Issue number9
DOIs
StatePublished - 1978
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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