Skip to Main content Skip to Navigation
Journal articles

Synthesis and Structure of Four-Coordinate Copper(II) Complexes Stabilized by β-Ketiminato Ligands and Application in the Reverse Atom-Transfer Radical Polymerization of Styrene

Abstract : The reaction of CuCl2 with R2NCH2CH2NHC(Me)=CHCO(Me) [R = Me (HL1) or Et (HL2)] in the presence of Et3N leads to the formation of complexes [CuCl(Ln)] [n = 1 (1), 2 (2)]. Whereas the solid‐state structure of compound 2 is mononuclear with a close to square‐planar arrangement of the ClON2 donor set, compound 1 adopts a dinuclear di‐μ‐chlorido arrangement in which two mononuclear units having essentially the same arrangement as in 2 establish loose axial Cu···Cl interactions, each one of them with the Cl atom of the other one. Compounds 1 and 2 have been tested as reversible trapping agents for the controlled radical polymerization of styrene under a reverse atom‐transfer radical polymerization (ATRP) approach. Reversible Cl atom transfer leading to a controlled polymerization process is observed, although the controllability is negatively affected by slow radical trapping. A moderate effect on the polymerization rate, once all the radical initiator is consumed, was observed in the presence of an excess amount of pyridine (10 equiv. per Cu) and interpreted on the basis of the stabilization of the CuI system.
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-03158346
Contributor : Marie-Hélène Gulli <>
Submitted on : Wednesday, March 3, 2021 - 5:27:03 PM
Last modification on : Friday, March 12, 2021 - 1:32:08 PM

File

293-10.1002-ejic.201001203-Acc...
Files produced by the author(s)

Identifiers

Collections

Citation

Stefano Gulli, Jean Claude Daran, Rinaldo Poli. Synthesis and Structure of Four-Coordinate Copper(II) Complexes Stabilized by β-Ketiminato Ligands and Application in the Reverse Atom-Transfer Radical Polymerization of Styrene. European Journal of Inorganic Chemistry, Wiley-VCH Verlag, 2011, 2011 (10), pp.1666-1672. ⟨10.1002/ejic.201001203⟩. ⟨hal-03158346⟩

Share

Metrics

Record views

55

Files downloads

16