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2.2.2-Cryptand as a bidentate ligand in rare-earth metal chemistry

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Abstract

The 2.2.2-cryptand ligand (crypt) that is heavily used in reductions of rare-earth metal complexes to encapsulate alkali metals has been found to function as a bidentate ligand to rare-earth metal ions in some cases. The X-ray crystal structures of the reduced dinitrogen metal complex, [{(R2N)2Ce(crypt-κ2-O,O′)}2(μ–η22-N2)] (R = SiMe3), and the ytterbium metallocene, (C5Me5)2Yb(crypt-κ2-O,O′), are presented to demonstrate this binding mode. The implications of this available binding mode in rare-earth metal cryptand chemistry are discussed.

Graphical abstract: 2.2.2-Cryptand as a bidentate ligand in rare-earth metal chemistry

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Submitted
24 Jun 2020
Accepted
06 Sep 2020
First published
13 Oct 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

2.2.2-Cryptand as a bidentate ligand in rare-earth metal chemistry

A. B. Chung, D. N. Huh, J. W. Ziller and W. J. Evans, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/D0QI00746C

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