Influence of the proximal ligand in the dismutation of hydrogen peroxide catalysed by manganese– and iron–porphyrin complexes
- 1 January 1989
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 7,p. 412-414
- https://doi.org/10.1039/c39890000412
Abstract
Using manganese– or iron–porphyrin complexes with a non-labile proximal ligand containing an oxygen or a nitrogen atom, the influence of the proximal ligand in hydrogen peroxide dismutation has been quantified; catalase activity is lower with a proximal oxygen(the axial ligand of the prosthetic ferriprotoporphyrin of catalase) than with a nitrogen ligand and the main role of the proximal oxygen ligand is to inhibit the oxygenase activity.Keywords
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