Reversible Apical Coordination of Imidazole between the Ni(III) and Ni(II) Oxidation States of a Dithiolate Complex: A Process Related to the Ni Superoxide Dismutase.
A bisamine aliph. dithiolate [NiIIN2S2] complex (I) that does yield a metal-based oxidn. has been synthesized. A square pyramidal [NiIIIN3S2]+ complex is generated by electrochem. oxidn. in the presence of imidazole, mimicking the redox structural changes of NiSOD. In addn., EPR measurements coupled to DFT calcns. demonstrate that the metal character in the redox active orbital increases drastically upon imidazole binding, implicating that these geometrical modifications are crucial for the stabilization of the NiIII state. [on SciFinder(R)]
Références
- Titre
- Reversible Apical Coordination of Imidazole between the Ni(III) and Ni(II) Oxidation States of a Dithiolate Complex: A Process Related to the Ni Superoxide Dismutase.
- Type de publication
- Article de revue
- Année de publication
- 2010
- Auteurs
- Gennari, Marcello, Orio Maylis, Pécaut Jacques, Neese Frank, Collomb Marie-Noelle, and Duboc Carole
- Revue
- Inorg. Chem.
- Volume
- 49
- Pagination
- 6399–6401
- ISSN
- 0020-1669
- Mots-clés
- coordination geometry nickel 2 3 SOD mimic bipyridinediylbisdiphenylethanethiol complex crystal structure nickel bipyridinediylbisdiphenylethanethiol prepn nickel 2 bipyridinediylbisdiphenylethanethiol prepn oxidn imidazole addn structure oxidn reversible nickel bipyridinediylbisdiphenylethanethiol SOD geometry mimic redox orbital nickel bipyridinediylbisdiphenylethanethiol imidazole coordination stabilization SOD mimic
Soumis le 12 avril 2018