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Issue 6, 2021
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Extending the chemistry of weakly basic ligands: solvates of Ag+ and Cu+ stabilized by [Al{OC(CF3)3}4] anion as model examples in the screening of useful weakly interacting solvents

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Abstract

Weakly Coordinating Anions (WCAs) facilitate the formation of exotic “naked” cationic species. However, the feasibility of the respective synthesis approaches may be limited by the basicity of the solvent utilized, as the latter is one of the most important factors determining the solvation ability. In this work, we focus on a series of novel complexes of Ag(I) and Cu(I) with weakly basic ligands such as CH2Cl2, Cl3CCN and SO2 stabilized by perfluorinated alkoxyaluminate, Al[(ORF)4], RF = C(CF3)3. The discussion includes their synthesis protocols, crystal structures, vibrational spectra and thermal stability (TGA/DSC/EGA). We show that the Cu–SO2 adducts present exceptional stability in relation to other metal–SO2 complexes. To broaden the scope of weakly basic ligands which could prove helpful in the development of chemistry with WCAs, the screening of potential candidates based on DFT calculations is presented.

Graphical abstract: Extending the chemistry of weakly basic ligands: solvates of Ag+ and Cu+ stabilized by [Al{OC(CF3)3}4]− anion as model examples in the screening of useful weakly interacting solvents

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Article information


Submitted
05 Oct 2020
Accepted
17 Dec 2020
First published
22 Dec 2020

Dalton Trans., 2021,50, 2050-2056
Article type
Paper

Extending the chemistry of weakly basic ligands: solvates of Ag+ and Cu+ stabilized by [Al{OC(CF3)3}4] anion as model examples in the screening of useful weakly interacting solvents

P. J. Malinowski, V. Zhuravlev, T. Jaroń, G. Santiso-Quinones and I. Krossing, Dalton Trans., 2021, 50, 2050
DOI: 10.1039/D0DT03437A

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