Lactide polymerisation by ring-expanded NHC complexes of zinc

Lee R. Collins, Louise A. Mofffat, Mary F. Mahon, Matthew D. Jones, Michael K. Whittlesey

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Abstract

The reaction of the ring-expanded N-heterocyclic carbenes (RE-NHCs) with [ZnMe2] affords the structurally characterised complexes [(6-Mes)ZnMe2] (1) and [(7-Mes)ZnMe2] (2). The activity of the two complexes, along with that of the free carbenes, for the ring-opening polymerisation of rac-lactide has been probed. Even for such strongly σ-donating carbenes, dissociation from the metal centre cannot be ruled out.
Original languageEnglish
Pages (from-to)121-125
JournalPolyhedron
Volume103
Issue numberPart A
Early online date25 Sep 2015
DOIs
Publication statusPublished - 8 Jan 2016

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