Issue 40, 2016

A multimetallic iron(ii)–lithium complex as a catalyst for ε-caprolactone polymerization

Abstract

Treatment of the lithium salt of β-ketimine with FeCl2(THF)1.5 in the presence of LiN(SiMe3)2 and water affords the multimetallic iron(II)–lithium complex 1, [(LMe)2Fe]3Li2O [where LMe = MeC(O)CHC(NMe)Me]. In complex 1 three separated (LMe)2Fe units are bound together by one Li2O species, which leads to the formation of an interesting {Fe3Li2O} core structure. Complex 1 can be used as a single-component initiator for the ring-opening polymerization of ε-caprolactone at room temperature, achieving a monomer conversion of 98% within 100 min, and a narrow molecular weight distribution (PDI = 1.28) of the resulting polymer.

Graphical abstract: A multimetallic iron(ii)–lithium complex as a catalyst for ε-caprolactone polymerization

Supplementary files

Article information

Article type
Communication
Submitted
07 Қаң. 2016
Accepted
24 Нау. 2016
First published
24 Нау. 2016

Dalton Trans., 2016,45, 15779-15782

A multimetallic iron(II)–lithium complex as a catalyst for ε-caprolactone polymerization

C. Geng, Y. Peng, L. Wang, H. W. Roesky and K. Liu, Dalton Trans., 2016, 45, 15779 DOI: 10.1039/C6DT00078A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements