Back to Search
Start Over
Monomeric and dimeric Al(iii) complexes for the production of polylactide.
- Source :
-
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2016 Sep 21; Vol. 45 (35), pp. 13846-52. Date of Electronic Publication: 2016 Aug 11. - Publication Year :
- 2016
-
Abstract
- A series of monometallic and bimetallic Al(iii) complexes with substituted naphthyl based Schiff base ligands have been prepared and characterised. When 1-aminonaphthalene based ligands were reacted with AlMe3 monometallic complexes were isolated, however, with 1,5 and 1,8-diaminonaphthalene based ligands bimetallic complexes were formed. In all cases 4-coordinate tetrahedral Al(iii) centres were observed in the solid state and in solution. There was little difference in rate of polymerisation of rac-lactide between the monometallic and bimetallic complexes based on 1,5-diaminonaphthalene. However, for the 1,8-diaminonaphthalene the complex was an order of magnitude faster than the monometallic and the analogous 1,5-system. Moreover, this complex was active at room temperature, which is rare for aluminium initiators, and PLA with a high degree (Pm = 0.82) of isotacticity was observed.
- Subjects :
- Coordination Complexes chemistry
Crystallography, X-Ray
Ligands
Molecular Structure
Naphthalenes chemistry
Polyesters chemistry
Polymerization
Stereoisomerism
Structure-Activity Relationship
Aluminum chemistry
Coordination Complexes chemical synthesis
Naphthalenes chemical synthesis
Polyesters chemical synthesis
Schiff Bases chemistry
Subjects
Details
- Language :
- English
- ISSN :
- 1477-9234
- Volume :
- 45
- Issue :
- 35
- Database :
- MEDLINE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Publication Type :
- Academic Journal
- Accession number :
- 27513366
- Full Text :
- https://doi.org/10.1039/c6dt02861f