---
res:
  bibo_abstract:
  - Ligands DMEG6etqu, TMG6etqu, DMEG6buqu, and TMG6buqu were developed on the basis
    of guanidine quinoline (GUAqu) ligands 1,3-dimethyl-N-(quinolin-8-yl)imidazolidin-2-imine
    (DMEGqu) and 1,1,3,3-tetramethyl-2-(quinolin-8-yl)guanidine (TMGqu). These ligands
    feature an alkyl substituent at the C6 of the quinoline backbone. The synthetic
    strategy developed here enables inexpensive syntheses of any kind of C6-substituted
    GUAqu ligands. On one hand, the alkylation increases the solubility of corresponding
    copper complexes in apolar atom transfer radical polymerization (ATRP) monomers
    like styrene. On the other hand, it has a significant electronic influence and
    thus an effect on the donor properties of the new ligands. Seven CuI and CuII
    complexes of DMEG6etqu and TMG6etqu have been crystallized and were studied with
    regard to their structural and electrochemical properties. CuI and CuII complexes
    of DMEG6buqu and TMG6buqu turned out to be perfectly soluble in pure styrene even
    at room temperature, which makes them excellent catalysts in the ATRP of apolar
    monomers. The key characteristics of the ATRP equilibrium, KATRP and kact, were
    determined for the new complexes. In addition, we used our recently developed
    DFT methodology, NBO analysis, and isodesmic reactions to predict the influence
    of the introduced alkyl substituents. It turned out that high conformational freedom
    in the complex structures leads to a significant uncertainty in prediction of
    the thermodynamic properties.@eng
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Thomas
      foaf_name: Rösener, Thomas
      foaf_surname: Rösener
  - foaf_Person:
      foaf_givenName: Alexander
      foaf_name: Hoffmann, Alexander
      foaf_surname: Hoffmann
  - foaf_Person:
      foaf_givenName: Sonja
      foaf_name: Herres-Pawlis, Sonja
      foaf_surname: Herres-Pawlis
  bibo_doi: 10.1002/ejic.201800511
  bibo_issue: '27'
  bibo_volume: 2018
  dct_date: 2018^xs_gYear
  dct_language: eng
  dct_subject:
  - Copper
  - Polymerization
  - Redox chemistry
  - Structure elucidation
  - Ligand effects
  dct_title: 'Next Generation of Guanidine Quinoline Copper Complexes for Highly Controlled
    ATRP: Influence of Backbone Substitution on Redox Chemistry and Solubility@'
...