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Issue 37, 2020

Systematic evaluation of the electronic effect of aluminum-containing ligands in iridium–aluminum and rhodium–aluminum bimetallic complexes

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Abstract

Pyridinemethanolate and oxyquinoline derivatives of previously reported late transition metal–aluminum heterobimetallic complexes containing iridium and rhodium have been synthesized and characterized. A combination of experimental and computational data permits a direct comparison of the electronic effects of each novel aluminum-containing ligand in our library on the late transition metal centers. Alongside electronic data of previously reported oxypyridine bridged systems, we conclude that the addition of a dialkylaluminum(X) (X = anion) fragment does not significantly perturb the electron donor ability of the bridging ligand. Anions bound to the aluminum are also shown to behave similarly. The overall library, thus, suggests that the best predictor of the electron donor ability of an alkylaluminum-containing ligand to a transition metal is the donor power of the bridging ligand.

Graphical abstract: Systematic evaluation of the electronic effect of aluminum-containing ligands in iridium–aluminum and rhodium–aluminum bimetallic complexes

Supplementary files

Article information


Submitted
13 Jul 2020
Accepted
04 Sep 2020
First published
11 Sep 2020

Dalton Trans., 2020,49, 13029-13043
Article type
Paper

Systematic evaluation of the electronic effect of aluminum-containing ligands in iridium–aluminum and rhodium–aluminum bimetallic complexes

R. M. Charles, N. S. Taylor, A. A. Mercado, C. E. Frost, T. W. Yokley, W. T. Eckenhoff, N. D. Schley, N. J. DeYonker and T. P. Brewster, Dalton Trans., 2020, 49, 13029 DOI: 10.1039/D0DT02472D

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