NDLI: Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactide

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Salalen aluminium complexes and their exploitation for the ring opening polymerisation of rac-lactide

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Loraine, Gaynor Mahon, Mary F. Whitelaw, Emma L. Jones, Matthew D.
Description	Author Affiliation: Whitelaw EL ( Department of Chemistry, University of Bath, Claverton Down, Bath, UKBA2 7AY.)
Abstract	In this paper we report the first use of Al(III) salalen complexes for the ring opening polymerisation of rac- lactide . Polylactides with narrow polydispersities (PDIs range from 1.04–1.65) and moderate degrees of stereoselectivity were formed. Eight salalen Al(III) complexes have been prepared and fully characterised by solution-state NMR spectroscopy and, where appropriate, single crystal X-ray diffraction . With ligand $3H_{2}$ either a monomeric or dimeric Al(III) species was formed, the dimeric species was favoured at low concentrations. The complexes were tested for the ring opening polymerisation of rac- lactide in toluene at 80 or 100 °C. Interestingly, various tacticities of polymer were formed, which were dependent upon the nature of the group bound to the amine nitrogen centre.
ISSN	14779226
Issue Number	43
Journal	Dalton Trans.
Volume Number	40
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2011-11-21
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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