Issue 24, 2008
From the journal:

Dalton Transactions

Bimetallic anilido-aldimine Al or Zn complexes for efficient ring-opening polymerization of ε-caprolactone†

Wei Yao,a   Ying Mu,*a   Aihong Gao,a   Wei Gaoa  and  Ling Yea  

* Corresponding authors

a State Key Laboratory for Supramolecular Structure and Materials, School of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, People's Republic of China
E-mail: ymu@mail.jlu.edu.cn
Fax: +86 431-85193421
Tel: +86 431-85168376

Abstract

Four bimetallic Al or Zn complexes supported by anilido-aldimine ligands (o-C6H4(NHAr)–CH[double bond, length as m-dash]N)2CH2CH2 (Ar = 2,6-Me2C6H3, L11H2; Ar = 2,6-iPr2C6H3, L22H2) have been synthesized and characterized. Treatment of L11H2 or L22H2 with two equiv. of AlMe3 gives bimetallic complex L11(AlMe2)21 or L22(AlMe2)22, respectively. Reaction of L11H2 or L22H2 with two equiv. of ZnEt2 leads to bimetallic complex L11(ZnEt)23 or L22(ZnEt)24, respectively. All of the complexes 1–4 are efficient catalysts for ring-opening polymerization of ε-caprolactone (CL) in the presence of benzyl alcohol and catalyze the polymerization of CL in living fashion yielding polymers with a narrow polydispersity index. The activity of bimetallic Zn complexes 3 and 4 is higher than bimetallic Al complexes 1 and 2.

Graphical abstract: Bimetallic anilido-aldimine Al or Zn complexes for efficient ring-opening polymerization of ε-caprolactone

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Article information

DOI
https://doi.org/10.1039/B719017D
Article type
Paper
Submitted
10 Dec 2007
Accepted
14 Mar 2008
First published
17 Apr 2008

Dalton Trans., 2008, 3199-3206

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Bimetallic anilido-aldimine Al or Zn complexes for efficient ring-opening polymerization of ε-caprolactone

W. Yao, Y. Mu, A. Gao, W. Gao and L. Ye, Dalton Trans., 2008, 3199 DOI: 10.1039/B719017D

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