Simple is best: Diamine zinc complexes as unexpected catalysts in lactide polymerisation

Autor: Janna Börner, Ines dos Santos Vieira, Carsten Strohmann, Viktoria H. Gessner, Sonja Herres-Pawlis, Prisca K. Eckert
Rok vydání: 2013
Předmět:
Zdroj: Polyhedron. 49:151-157
ISSN: 0277-5387
Popis: A series of monomeric coordination compounds containing zinc(II) chloride or zinc(II) bromide and the 1,2-diamine ligands TMEDA, TEEDA, (R,R)-TMCDA, (R,R)-TECDA and cis-TMCDA have been synthesised and structurally characterised using X-ray diffraction analysis. All but one complex could be successfully used as initiators for the solvent-free ring-opening polymerisation of d,l -lactide. In particular, the polylactide (PLA) prepared with compounds containing (R,R)-TECDA is obtainable in high yields with molecular weights suitable for industrial applications. Thus a class of stable, easy to synthesise and efficient PLA catalysts with neutral ligands is introduced.
Databáze: OpenAIRE