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Issue 26, 2012
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Synthesis and electronic properties of a pentafluoroethyl-derivatized nickel pincer complex

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Abstract

The synthesis of a bis(amino)amide nickel pincer complex bearing a perfluoroethyl ligand was effected by reaction of the corresponding nickel chloride complex with cesium fluoride and trimethyl(pentafluoroethyl)silane. Electrochemical experiments revealed that the oxidation of the LNi–C2F5 complex occurs at the same potential as the LNi–Cl derivative, but reduction of the LNi–C2F5 complex occurs at slightly more positive potentials. The similarity of the electrochemical data was corroborated by density functional theory (DFT), which predicts that the energies of the HOMOs (HOMO = highest occupied molecular orbital) and LUMOs (LUMO = lowest unoccupied molecular orbital) of the LNi–C2F5 and LNi–Cl complexes are equal in magnitude. DFT also revealed that the HOMOs of the bis(amino)amide nickel pincer complexes are primarily ligand in character, while the LUMOs are predominantly metal in character, supporting redox-activity with this ligand.

Graphical abstract: Synthesis and electronic properties of a pentafluoroethyl-derivatized nickel pincer complex

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Article information


Submitted
18 Jan 2012
Accepted
12 Mar 2012
First published
14 Mar 2012

Dalton Trans., 2012,41, 7915-7919
Article type
Paper

Synthesis and electronic properties of a pentafluoroethyl-derivatized nickel pincer complex

V. N. Madhira, P. Ren, O. Vechorkin, X. Hu and D. A. Vicic, Dalton Trans., 2012, 41, 7915
DOI: 10.1039/C2DT30131H

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