التفاصيل البيبلوغرافية
| العنوان: |
A Stable Aminyl Radical Coordinated to Cobalt. |
| المؤلفون: |
Rodríguez‐Lugo, Rafael E.1,2,3, de Bruin, Bas4 b.debruin@uva.nl, Trincado, Monica1 trincado@inorg.chem.ethz.ch, Grützmacher, Hansjörg1 hgruetzmacher@ethz.ch |
| المصدر: |
Chemistry - A European Journal. 5/17/2017, Vol. 23 Issue 28, p6795-6802. 8p. |
| مصطلحات موضوعية: |
*AMINYL radicals, *COBALT, *METAL complexes, *DENSITY functional theory, *PROTON transfer reactions |
| مستخلص: |
A family of cobalt complexes bearing the trop2NH [bis(5- H-dibenzo[ a,d]cyclohepten-5-yl)-amine] and 2,2'-bpy (2,2'-bipyridine) chelate ligands were prepared and fully characterized. The compounds [Co(trop2N)(bpy)], [Co(trop2NH)(bpy)]+, and [Co(trop2N)(bpy)]+ are cobalt complexes interrelated by one-electron redox processes and/or proton transfer. Two limiting resonance structures can be used to describe the paramagnetic complex [Co(trop2N)(bpy)]+: [CoII(trop2N−)(bpy)]+ (CoII amido) and [CoI(trop2N⋅)(bpy)]+ (CoI-aminyl radical). Structural data, DFT calculations, and reactivity toward H-abstraction indicate a slightly higher contribution of the aminyl radical form to the ground state of [Co(trop2N)(bpy)]+. The results described here complete the series of Group 9 metal aminyl radical complexes bearing the diolefin amine ligand trop2NH. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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