Issue 3, 2002
From the journal:

Journal of the Chemical Society, Dalton Transactions

Six-coordinate aluminium cations: characterization, catalysis, and theory

Miguel-Angel Munoz-Hernandez,a   Michael L. McKee,*b   Timothy S. Keizer,c   Burl C. Yearwoodc  and  David A. Atwood*c  

* Corresponding authors

a Universidad Autonoma del Estado de Morelos, Centro de Investigaciones Quimicas, Av. Universidad No. 1001, Col. Chamilpa, Cuernavaca, Morelos 62210, Mexico

b Department of Chemistry, Auburn University, Auburn, Alabama 36849-5312, USA

c Department of Chemistry, The University of Kentucky, Lexington, Kentucky 40506-0055, USA

Abstract

The new thf supported cations, [Salen(tBu)Al(thf)2]+ (2), [Salpen(tBu)Al(thf)2]+ (3), [Salben(tBu)Al(thf)2]+ (4) [Salophen(tBu)Al(thf)2]+ (5) and [Salomphen(tBu)Al(thf)2]+ (6), with BPh4− as the counter anion, have been prepared from salt elimination reactions with the respective Salen(tBu)AlCl reagent, including one that is new, Salben(tBu)AlCl (1). The cations were observed to polymerize propylene oxide. Based upon the results of experimental and theoretical work the mechanism appears to be one in which a carbocation is the propagating species although the PDI values are remarkably low, ≈1.2 in some cases. All of the potential catalysts were characterized spectroscopically and, in the case of 3, by X-ray crystallography.

Graphical abstract: Six-coordinate aluminium cations: characterization, catalysis, and theory

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Article information

DOI
https://doi.org/10.1039/B106003C
Article type
Paper
Submitted
30 May 2001
Accepted
22 Oct 2001
First published
11 Jan 2002

J. Chem. Soc., Dalton Trans., 2002, 410-414

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Six-coordinate aluminium cations: characterization, catalysis, and theory

M. Munoz-Hernandez, M. L. McKee, T. S. Keizer, B. C. Yearwood and D. A. Atwood, J. Chem. Soc., Dalton Trans., 2002, 410 DOI: 10.1039/B106003C

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