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Open AccessArticle

Synthesis and Reactivity of Mn–CF3 Complexes

Department of Chemistry and Biomolecular Sciences and Centre for Catalysis Research and Innovation, University of Ottawa, 30 Marie Curie, Ottawa, ON K1N 6N5, Canada
Author to whom correspondence should be addressed.
Inorganics 2019, 7(1), 3;
Received: 29 October 2018 / Revised: 19 December 2018 / Accepted: 25 December 2018 / Published: 6 January 2019
(This article belongs to the Special Issue First-Row Transition Metal Complexes)
The synthesis, characterization and reactivity of several bi- and tridentate, N-ligated manganese carbonyl trifluoromethyl complexes are presented. These complexes exhibit elongated Mn–CCF3 bonds (versus Mn(CF3)(CO)5), suggesting a lability that could be utilized for the transfer or insertion of the CF3 functional group into organic substrates. Unlike their Mn–X congeners (X = Cl, Br), these Mn–CF3 complexes exhibit a preference for hard donor ancillary ligands, thus enabling the synthesis of 4 N-ligated Mn–CF3 complexes including a mixed-donor tridentate complex using an NNS Schiff base ([2-(methylthio)-N-(1-(pyridin-2-yl)ethylidene)aniline]). Although we have not yet identified efficient CF3 transfer reactions, fluoride abstraction from the Mn–CF3 complexes using trimethylsilyl triflate affords the first stable Mn fluorocarbenes as evidenced by 19F NMR spectroscopy. View Full-Text
Keywords: metal organofluorine chemistry; manganese; trifluoromethyl ligand; metal fluorocarbenes metal organofluorine chemistry; manganese; trifluoromethyl ligand; metal fluorocarbenes
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MDPI and ACS Style

Daniels, A.L.; Da Gama, J.G.; Edjoc, R.; Gabidullin, B.M.; Baker, R.T. Synthesis and Reactivity of Mn–CF3 Complexes. Inorganics 2019, 7, 3.

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