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Bio-Inspired Oxidation Chemistry of a Cu(II)-Fluoride Cryptate with C3-Symmetry

Title:

Bio-Inspired Oxidation Chemistry of a Cu(II)-Fluoride Cryptate with C3-Symmetry

Chaloner, Laura and Ottenwaelder, Xavier (2017) Bio-Inspired Oxidation Chemistry of a Cu(II)-Fluoride Cryptate with C3-Symmetry. Inorganica Chimica Acta . ISSN 00201693 (In Press)

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Official URL: http://dx.doi.org/10.1016/j.ica.2017.10.027

Abstract

Three copper complexes with an N-methylated cryptand, LTEA, bearing a tris(2-aminoethylamine moiety have been synthesized and compared. Two copper(II)-chloride complexes, [LTEACuCl](SbF6)(MeOH) and [LTEACuCl2](MeCN) were characterized in solution and solid state by UV/Vis and X-ray crystallography. Both had square-based geometries with C1-symmetry and no encapsulation of the chloride ion. A Cu(II)-fluoride complex, in which the ligand is protonated, [LTEAHCuF](BF4)2(MeCN)0.5, adopted C3-symmetry with complete encapsulation of the coordination sphere as characterized by UV/Vis, EPR and X-ray crystallography. Reactivity of the complexes with H2O2/Et3N was explored using UV/Vis and CSI-MS. Only the fluoride complex was found to form a Cu(II)-hydroperoxo intermediate.

Divisions:Concordia University > Faculty of Arts and Science > Chemistry and Biochemistry
Item Type:Article
Refereed:Yes
Authors:Chaloner, Laura and Ottenwaelder, Xavier
Journal or Publication:Inorganica Chimica Acta
Date:28 October 2017
Funders:
  • Fonds de Recherche du Québec - Nature et Technologies (FRQNT)
  • Natural Sciences and Engineering Research Council of Canada (NSERC)
  • Canadian Foundation for Innovation (CFI)
Digital Object Identifier (DOI):10.1016/j.ica.2017.10.027
Keywords:Copper; Fluoride; Hydroperoxide; Cryptand; Oxidation; Oxygen-atom transfer
ID Code:983144
Deposited By: DANIELLE DENNIE
Deposited On:01 Nov 2017 17:56
Last Modified:27 Oct 2018 00:01

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