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Title
Copper(II) complexes with imino phenoxide ligands : synthesis, characterization, and their application as catalysts for the ring-opening polymerization of rac-lactide
AuthorMandal, Mrinmay ; Oppelt, Kerstin ; List, Manuela ; Teasdale, Ian ; Chakraborty, Debashis ; Monkowius, Uwe
Published in
Monatshefte für Chemie - Chemical Monthly, 2016, Vol. 147, Issue 11, page 1883-1892
PublishedSpringer, 2016
LanguageEnglish
Document typeJournal Article
Keywords (EN)Imino phenoxide / Copper Crystal structure / ROP / rac-Lactide / Cyclic voltammetry / Poly(lactic acid)
Project-/ReportnumberM00146
ISSN1434-4475
URNurn:nbn:at:at-ubl:3-1460 Persistent Identifier (URN)
DOI10.1007/s00706-016-1830-7 
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 The work is publicly available
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Copper(II) complexes with imino phenoxide ligands [0.93 mb]
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Abstract (English)

Four new copper complexes based on bidentate imino phenoxide ligands were synthesized and characterized by IR, UVVis spectroscopy, ESI mass spectrometry, single crystal X-ray diffraction, and electrochemistry. The crystal structures revealed that the copper(II) atoms are surrounded by phenolate oxygen and imine nitrogen atoms of two ligands in a distorted square-planar geometry. The existence of ligand-centered, as well as Cu(II)-centered quasi-reversible and reversible redox reactions are observed in the cyclic voltammetry experiments of all the complexes. All complexes are able to catalyze the ring-opening polymerization of rac-lactide yielding polymers with moderate molecular weights and moderately broad molecular weight distributions.

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CC-BY-License (4.0)Creative Commons Attribution 4.0 International License