期刊
DALTON TRANSACTIONS
卷 45, 期 35, 页码 13846-13852出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6dt02861f
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资金
- EPRSC [EP/G03768X/1]
- Engineering and Physical Sciences Research Council [1421456, 1232871] Funding Source: researchfish
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 (P-m = 0.82) of isotacticity was observed.
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