The University of Southampton
University of Southampton Institutional Repository

Synthesis, properties, and molecular structures of alkylaluminium aminoalkoxide chlorides

Synthesis, properties, and molecular structures of alkylaluminium aminoalkoxide chlorides
Synthesis, properties, and molecular structures of alkylaluminium aminoalkoxide chlorides
Alkylaluminium aminoalkoxide chlorides [R(Cl)AlOR*] 1-3 have been obtained from the reaction of dialkyl aluminium chlorides R2AlCl with the respective aminoalkohol HOR* (1: R = Et, OR* = dimethylamino-1-propanol; 2: R = Me, OR* = (+);(-)-dimethylamino-2-propanol; 3: R = Me, OR* = (S)-N-methyl-2-pyrrolidinyl-methanol). The reaction between dimethylaluminium chloride and (S)-α,α-diphenyl-2-pyrrolidinyl-methanol (OR* = Dpm) yielded, by contrast, the ionic {[MeAl(OR*)2AlMe2]+ [MeAlCl3]-} complex (4). 1-4 have been characterised by 1H,13C and 27Al-NMR spectroscopy. Crystal structures of 1 and of the 1:1 solvate of 4 with Et2O have been determined by X-ray methods and the absolute structure of 4 was confirmed by refinement of the Flack-parameter. The dimeric molecules of 1 are composed of two chelating rings linked via an almost planar Al2O2 unit and pentacoordination is observed about aluminium. In contrast, each of the two crystallographically independent cation molecules of 4 contains one four- and one five-coordinate metal centre.
aluminium alkyl aminoalkoxide chlorides, nmr spectroscopy (al-27), crystal structuresdiels-alder reaction, amino alkoxides, lewis-acids, aluminum, dimethylaluminum, complexes, additions
180-186
Hecht, E.
e14a4e5d-67ec-41d1-bad8-763382fb942c
Gelbrich, T.
6874d813-bf11-4950-b322-dfe77c533f41
Thiele, K. H.
5712dd47-4a61-4dce-a011-326340927405
Sieler, J.
0402c52e-1779-4c8c-ae78-8b93726ffb1f
Hecht, E.
e14a4e5d-67ec-41d1-bad8-763382fb942c
Gelbrich, T.
6874d813-bf11-4950-b322-dfe77c533f41
Thiele, K. H.
5712dd47-4a61-4dce-a011-326340927405
Sieler, J.
0402c52e-1779-4c8c-ae78-8b93726ffb1f

Hecht, E., Gelbrich, T., Thiele, K. H. and Sieler, J. (2000) Synthesis, properties, and molecular structures of alkylaluminium aminoalkoxide chlorides. Zeitschrift Fur Anorganische Und Allgemeine Chemie, 626 (1), 180-186. (doi:10.1002/(SICI)1521-3749(200001)626:1<180::AID-ZAAC180>3.0.CO;2-O).

Record type: Article

Abstract

Alkylaluminium aminoalkoxide chlorides [R(Cl)AlOR*] 1-3 have been obtained from the reaction of dialkyl aluminium chlorides R2AlCl with the respective aminoalkohol HOR* (1: R = Et, OR* = dimethylamino-1-propanol; 2: R = Me, OR* = (+);(-)-dimethylamino-2-propanol; 3: R = Me, OR* = (S)-N-methyl-2-pyrrolidinyl-methanol). The reaction between dimethylaluminium chloride and (S)-α,α-diphenyl-2-pyrrolidinyl-methanol (OR* = Dpm) yielded, by contrast, the ionic {[MeAl(OR*)2AlMe2]+ [MeAlCl3]-} complex (4). 1-4 have been characterised by 1H,13C and 27Al-NMR spectroscopy. Crystal structures of 1 and of the 1:1 solvate of 4 with Et2O have been determined by X-ray methods and the absolute structure of 4 was confirmed by refinement of the Flack-parameter. The dimeric molecules of 1 are composed of two chelating rings linked via an almost planar Al2O2 unit and pentacoordination is observed about aluminium. In contrast, each of the two crystallographically independent cation molecules of 4 contains one four- and one five-coordinate metal centre.

This record has no associated files available for download.

More information

Published date: 1 January 2000
Keywords: aluminium alkyl aminoalkoxide chlorides, nmr spectroscopy (al-27), crystal structuresdiels-alder reaction, amino alkoxides, lewis-acids, aluminum, dimethylaluminum, complexes, additions
Organisations: Chemistry

Identifiers

Local EPrints ID: 18861
URI: http://eprints.soton.ac.uk/id/eprint/18861
PURE UUID: 405c7a28-8114-4614-ae75-00839883229a

Catalogue record

Date deposited: 05 Jan 2006
Last modified: 15 Mar 2024 06:08

Export record

Altmetrics

Contributors

Author: E. Hecht
Author: T. Gelbrich
Author: K. H. Thiele
Author: J. Sieler

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×