Stable bis(trifluoromethyl)nickel(iii) complexes. Issue 15 (19th January 2015)

• Record Type: Journal Article
• Authors: Tang, Fengzhi; Rath, Nigam P.; Mirica, Liviu M.
• Is Part Of: Chemical communications. Volume 51:Issue 15(2015)
• Page Start: 3113
• Page End: 3116
• Publication Date: 2015-01-19
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c4cc09594d
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Tetradentate macrocyclic N-donor ligands support uncommonly stable bis(trifluoromethyl)Ni(iii ) complexes that are similar to the intermediates proposed in Ni-catalyzed cross-coupling reactions. Abstract : Organometallic Ni(iii ) intermediates have been proposed in several Nickel-catalyzed cross-coupling reactions, yet no isolated bis(hydrocarbyl)Ni(iii ) complexes have been reported to date. Herein we report the synthesis and detailed characterization of stable organometallic Ni(iii ) complexes that contain two trifluoromethyl ligands and are supported by tetradentate N-donor ligands R N4 (R = Me or t Bu). Interestingly, the corresponding Ni(ii ) precursors undergo facile oxidation, including aerobic oxidation, to generate uncommonly stable organometallic Ni(iii ) complexes that exhibit limited reactivity.