Unexpected C−F activation during redox transmetallation with silver N, N′‐bis(2, 6‐difluorophenyl)formamidinate. Issue 19 (24th August 2022)

• Record Type: Journal Article
• Authors: Guo, Zhifang; Deacon, Glen B.; Junk, Peter C.
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 648:Issue 19(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-08-24
• Subjects: Redox transmetallation (RT) reactions -- Silver N, N′-bis(2, 6-difluorophenyl)formamidinate (AgDFForm) -- C−F activation reactions -- Crystal structures.; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202200189
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: The trivalent lanthanoid formamidinates, [Yb2 (DFForm)4 F2 (py)2 ] ⋅ CH3 CN (1 ) (DFForm= N, N ′‐bis(2, 6‐difluorophenyl)formamidinate), and [La6 (DFForm)8 F8 O(CH3 CN)2 ] ⋅ 6CH3 CN (2 ) have been prepared from redox transmetallation (RT) reactions employing lanthanoid metals and silver formamidinate (AgDFForm) in CH3 CN. C−F activation was observed in both reactions. The structure of 1 is a fluorine bridged dimer with two seven‐coordinate ytterbium metal ions. Surprisingly the lanthanum complex is a trivalent cage with an unexpected central oxygen atom. [La6 (DFForm)8 F8 O(CH3 CN)2 ] ⋅ 6CH3 CN (2 ) formed a 15 membered ring cage of six La atoms, eight F and one O at the centre. There are three different La 3+ ions in 2 with two different coordination numbers. All the La atoms are coordinated by four bridging fluorides and the central oxygen. Abstract :