Copper Complexes of the Tetradentate N,N′-Bis(2-amino-3,5-di-tert-butylphenyl)-2,2′-diaminobiphenyl Ligand
Abstract The ligand N,N′-bis(2-amino-3,5-di-tert-butylphenyl)-2,2′-diaminobiphenyl was synthesized and coordinated to copper. Complex 1+ was structurally characterized, showing two deprotonated diiminobenzoquinone ligands coordinated to a single Cu(I) center. The paramagnetic complexes 1 and 12+ were generated and characterized by EPR and Vis-NIR spectroscopy. Complex 1 exhibits an isotropic resonance at g=2.00, which is reminiscent of Cu(I) diiminosemiquinone species. The dication 12+ exhibits a metal-based ground spin state and hence is described as a Cu(II) diiminobenzoquinone complex. Both 1 and 1+ show a NIR band (954, 980 nm) of high intensity (>20 mM−1 cm−1) assigned to ligand-based charge transfer transitions.
Références
- Titre
- Copper Complexes of the Tetradentate N,N′-Bis(2-amino-3,5-di-tert-butylphenyl)-2,2′-diaminobiphenyl Ligand
- Type de publication
- Article de revue
- Année de publication
- 2021
- Auteurs
- Leconte, Nicolas, Berthiol Florian, Philouze Christian, and Thomas Fabrice
- Revue
- European Journal of Inorganic Chemistry
- Volume
- 2021
- Pagination
- 1481-1489
Soumis le 9 juin 2021