Unexpected Formation of a Cobalt(III) Phenoxazinylate Electron Reservoir

Autor:	Frank D. Lesh, H. Bernhard Schlegel, Mary Jane Heeg, Cláudio N. Verani, Richard L. Lord
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Ligand Stereochemistry Salt (chemistry) chemistry.chemical_element Electrochemistry Catalysis Coordination complex Inorganic Chemistry Crystallography chemistry Transition metal Moiety Cobalt
Zdroj:	European Journal of Inorganic Chemistry. 2012:463-466
ISSN:	1099-0682 1434-1948
Popis:	The redox-active ligand N,N′-bis(3,5-di-tert-butyl-2-hydroxyphenyl)-1,2-phenylenediamine (H4L), known for supporting catalytic processes with both late and early transition metals, unexpectedly undergoes an unusual and thus far unobserved cyclization. Upon equimolar treatment of a cobalt(II) salt in the presence of Et3N under aerobic conditions, a ligand rearrangement occurs to afford an unprecedented phenoxazinyl radical moiety (L′). The resulting bisligated Co complex, thoroughly characterized structurally and electronically and analyzed by multiple experimental and computational approaches, is presented. It is shown to traverse oxidation states from 2+ to 3–, spanning a thermodynamic window of approximately 2 V.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d75541c6e408f5e630ba03e602a77c54 https://doi.org/10.1002/ejic.201101352 Zobrazit plný text záznamu Plný text