Polymerisations of ε-caprolactone and β-butyrolactone with Zn-, Al- and Mg-based organometallic complexes

Félicité Majoumo-Mbe, Elena Smolensky, Peter Lönnecke, Dina Shpasser, Moris S. Eisen, Evamarie Hey-Hawkins*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

The reaction of EtAlCl2 with 1,2-{LiN(PMes2)} 2C6H4 (Mes = 2,4,6-Me3C 6H2) and of butyloctylmagnesium with 1,2-{NH(PPh 2)}2C6H4 gave [AlEt(1,2-{N(PMes 2)}2C6H42N, N′)(THF)] (1) and [Mg(1,2-{N(PPh2)}2C 6H42N,N′)(THF)2] (2), respectively. Complexes 1 and 2 were fully characterised by NMR (1H, 13C, 31P) and IR spectroscopy and mass spectrometry. Complexes 1 and 2 were employed as catalysts in the polymerisation of ε-caprolactone, which produced polymers with a narrow molecular weight distribution. For comparison the polymerisations of ε-caprolactone and β-butyrolactone were carried out with the Zn complex [ZnPr{1-N(PMes 2)-2-N(PHMes2)C6H4- κ2N,N′}] (3) as catalyst, which produced polymers with narrow molecular weight distributions and high molecular weights.

Original languageEnglish
Pages (from-to)91-98
Number of pages8
JournalJournal of Molecular Catalysis A: Chemical
Volume240
Issue number1-2
DOIs
StatePublished - 3 Oct 2005
Externally publishedYes

Keywords

  • Aluminium bisamido complex
  • Magnesium bisamido complex
  • Molecular structures
  • Polymerisation of ε-caprolactone and β-butyrolactone

Fingerprint Dive into the research topics of 'Polymerisations of ε-caprolactone and β-butyrolactone with Zn-, Al- and Mg-based organometallic complexes'. Together they form a unique fingerprint.

Cite this