Oxygen Atom Exchange between H2O and Non-Heme Oxoiron(IV) Complexes: Ligand Dependence and Mechanism
We report on oxygen atom exchange (OAE) reactions between H218O and non-heme oxoiron(IV) complexes supported by tetradentate and pentadentate ligands that proceed by a common mechanism within two kinetic regimes. One regime exhibits a linear [H218O] dependence on the OAE rate and a small H/D KIE, wh...
| Authors: | , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2016 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/13162 |
| Online Access: | http://hdl.handle.net/10256/13162 |
| Access Level: | Embargoed access |
| Keyword: | Reaccions químiques Chemical reactions Protons -- Reaccions de transferència Proton transfer reactions |
| Summary: | We report on oxygen atom exchange (OAE) reactions between H218O and non-heme oxoiron(IV) complexes supported by tetradentate and pentadentate ligands that proceed by a common mechanism within two kinetic regimes. One regime exhibits a linear [H218O] dependence on the OAE rate and a small H/D KIE, which mainly involves the binding of H218O to the FeiV(O) center, while the second regime exhibits OAE rates independent of [H218O] and significantly larger H/D KIEs that suggest rate determining proton transfer |
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