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Lookup NU author(s): Dr Nathan Davison, Dr James Quirk, Dr Corinne Wills, Dr Casey Dixon, Dr Paul Waddell, Dr James DawsonORCiD, Dr Erli Lu
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
© 2022 The Authors. Published by American Chemical Society. Multidentate neutral amine ligands play vital roles in coordination chemistry and catalysis. In particular, these ligands are used to tune the reactivity of Group-1 metal reagents, such as organolithium reagents. Most, if not all, of these Group-1 metal reagent-mediated reactions occur in solution. However, the solution-state coordination behaviors of these ligands with Group-1 metal cations are poorly understood, compared to the plethora of solid-state structural studies based on single-crystal X-ray diffraction (SCXRD) studies. In this work, we comprehensively mapped out the coordination modes with Group-1 metal cations for three multidentate neutral amine ligands: tridentate 1,4,7-trimethyl-1,4,7-triazacyclononane (Me3TACN), tetradentate tris[2-(dimethylamino)ethyl]amine (Me6Tren), and hexadentate N,N′,N″-tris-(2-N-diethylaminoethyl)-1,4,7-triaza-cyclononane (DETAN). The macrocycles in the Me3TACN and DETAN are identified as the rigid structural directing motif, with the sidearms of DETAN providing flexible "on-demand"coordination sites. In comparison, the Me6Tren ligand features more robust coordination, with the sidearms less likely to undergo the decoordinating-coordinating equilibrium. This work will provide a guidance for coordination chemists in applying these three ligands, in particular, the new DETAN ligand to design metal complexes which suit their purposes.
Author(s): Davison N, Quirk JA, Wills C, Dixon C, Waddell PG, Dawson JA, Lu E
Publication type: Article
Publication status: Published
Journal: Inorganic Chemistry
Year: 2022
Volume: 61
Issue: 38
Pages: 15204-15212
Print publication date: 26/09/2022
Online publication date: 16/09/2022
Acceptance date: 02/04/2018
Date deposited: 13/10/2022
ISSN (print): 0020-1669
ISSN (electronic): 1520-510X
Publisher: American Chemical Society
URL: https://doi.org/10.1021/acs.inorgchem.2c02457
DOI: 10.1021/acs.inorgchem.2c02457
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