Unexpected C-F activation during redox transmetallation with silver N,N '-bis(2,6-difluorophenyl)formamidinate

Guo, Zhifang, Deacon, Glen B., and Junk, Peter C. (2022) Unexpected C-F activation during redox transmetallation with silver N,N '-bis(2,6-difluorophenyl)formamidinate. Zeitschrift fuer Anorganische und Allgemeine Chemie, 648 (19). e202200189.

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Abstract

The trivalent lanthanoid formamidinates, [Yb-2(DFForm)(4)F-2(py)(2)]center dot CH3CN (1) (DFForm=N,N'-bis(2,6-difluorophenyl)formamidinate), and [La-6(DFForm)(8)F8O(CH3CN)(2)].6CH(3)CN (2) have been prepared from redox transmetallation (RT) reactions employing lanthanoid metals and silver formamidinate (AgDFForm) in CH3CN. 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. [La-6(DFForm)(8)F8O(CH3CN)(2)].6CH(3)CN (2) formed a 15 membered ring cage of six La atoms, eight F and one O at the centre. There are three different La3+ ions in 2 with two different coordination numbers. All the La atoms are coordinated by four bridging fluorides and the central oxygen.

Item ID: 75944
Item Type: Article (Research - C1)
ISSN: 1521-3749
Keywords: Redox transmetallation (RT) reactions, Silver N, N '-bis(2, 6-difluoroplienyl)formamidinate (AgDFForm), C-F activation reactions, Crystal structures
Copyright Information: © 2022 The Authors. Zeitschrift für anorganische und allgemeine Chemie published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.
Date Deposited: 07 Sep 2022 08:59
FoR Codes: 34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340211 Transition metal chemistry @ 100%
SEO Codes: 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280105 Expanding knowledge in the chemical sciences @ 100%
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