Issue 35, 2008
From the journal:

Dalton Transactions

Biphenylamideligand complexes of Li and Al: hemilabile arene donors?†

Meghan A. Dureena  and  Douglas W. Stephan‡*a  

* Corresponding authors

a Department of Chemistry & Biochemistry, University of Windsor, Windsor, Ontario, Canada
E-mail: dstephan@chem.utoronto.ca

Abstract

Biphenylamide ligands were employed to prepare a series of Li and Al derivatives in which the ligand binds through N. Such species include: (2-C6H4Ph)ButNLi (3), (2-C6H4Ph)ButNLi(THF)2 (4), (2-C6H4Ph)ButNLi·OEt2 (5), [(μ-(2-C6H4Ph)2N)Li]2 (6), (2-C6H4Ph)2NLi(THF)2 (7), (2-C6H4Ph)2NLi·OEt2 (8) amd (2-C6H4Ph)2NAlX2 (X = Cl (9), Me (10), Et (11)). Structural and spectroscopic data show that these species exhibit weak arene to metal donation. This donor is hemilabile being readily displaced by other stronger donors to give such species as (2-C6H4Ph)2NAlMe2(THF) (12) and (2-C6H4Ph)2NAlMe2(CH2PPh3) (13). Reactions of 10 with B(C6F5)3 results in methyl for C6F5 exchange and isolation of (2-C6H4Ph)2NAl(C6F5)2 (14). The presence the electron withdrawing groups in 14 further strengthens the hemilabile interaction.

Graphical abstract: Biphenylamide ligand complexes of Li and Al: hemilabile arene donors?

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Article information

DOI
https://doi.org/10.1039/B801772G
Article type
Paper
Submitted
11 Feb 2008
Accepted
21 May 2008
First published
11 Jul 2008

Dalton Trans., 2008, 4723-4731

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Biphenylamide ligand complexes of Li and Al: hemilabile arene donors?

M. A. Dureen and D. W. Stephan, Dalton Trans., 2008, 4723 DOI: 10.1039/B801772G

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