| Online-Ressource |
Verfasst von: | Ziesak, Alexandra Sabrina [VerfasserIn]  |
| Wesp, Tobias [VerfasserIn]  |
| Hübner, Olaf [VerfasserIn]  |
| Kaifer, Elisabeth [VerfasserIn]  |
| Wadepohl, Hubert [VerfasserIn]  |
| Himmel, Hans-Jörg [VerfasserIn]  |
Titel: | Counter-ligand control of the electronic structure in dinuclear copper-tetrakisguanidine complexes |
Verf.angabe: | Alexandra Ziesak, Tobias Wesp, Olaf Hübner, Elisabeth Kaifer, Hubert Wadepohl and Hans-Jörg Himmel |
E-Jahr: | 2015 |
Jahr: | 19 Oct 2015 |
Umfang: | 15 S. |
Fussnoten: | Gesehen am 15.09.2020 |
Titel Quelle: | Enthalten in: Dalton transactions |
Ort Quelle: | London : Soc., 1972 |
Jahr Quelle: | 2015 |
Band/Heft Quelle: | 44(2015), 44, Seite 19111-19125 |
ISSN Quelle: | 1477-9234 |
Abstract: | The redox-active GFA (Guanidino-Functionalized Aromatic compound) 1,4,5,8-tetrakis(tetramethylguanidino)-naphthalene (6) is used to synthesize new dinuclear copper complexes of the formula [6(CuX2)2] with different electronic structures. With X = OAc, a dinuclear CuII complex of the neutral GFA is obtained (electronic structure [CuII-GFA-CuII], two unpaired electrons), and with X = Br a diamagnetic dinuclear CuI complex of the dicationic GFA (electronic structure [CuI-GFA2+-CuI], closed-shell singlet state). The different electronic structures lead to significant differences in the optical, structural and magnetic properties of the complexes. Furthermore, the complex [6(CuI)2]2+ (electronic structure [CuI-GFA2+-CuI], closed-shell singlet state) is synthesized by reaction of 62+ with two equivalents of CuI. Slow decomposition of this complex in solution leads to the fluorescent dye 2,7-bis(dimethylamino)-1,3,6,8-tetraazapyrene. In an improved synthesis of this tetraazapyrene, 6 is reacted with CuBr in the presence of dioxygen. Quantum chemical calculations show that the addition of counter-ligands to the trigonal planar CuI atoms of [6(CuI)2]2+ favors or disfavors one of the electronic structures, depending on the nature of the counter-ligand. |
DOI: | doi:10.1039/C5DT03270A |
URL: | Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.
Volltext: https://doi.org/10.1039/C5DT03270A |
| Volltext: https://pubs.rsc.org/en/content/articlelanding/2015/dt/c5dt03270a |
| DOI: https://doi.org/10.1039/C5DT03270A |
Datenträger: | Online-Ressource |
Sprache: | eng |
K10plus-PPN: | 1732492107 |
Verknüpfungen: | → Zeitschrift |
Counter-ligand control of the electronic structure in dinuclear copper-tetrakisguanidine complexes / Ziesak, Alexandra Sabrina [VerfasserIn]; 19 Oct 2015 (Online-Ressource)