Tuning the properties of redox-active guanidino-functionalized aromatic ligands by substitution

• Verfasst von: Peters, Anastasia [VerfasserIn]
• Verfasst von: Herrmann, Hendrik Hans [VerfasserIn]
• Verfasst von: Magg, Martin [VerfasserIn]
• Verfasst von: Kaifer, Elisabeth [VerfasserIn]
• Verfasst von: Himmel, Hans-Jörg [VerfasserIn]
• Titel: Tuning the properties of redox-active guanidino-functionalized aromatic ligands by substitution
• Titelzusatz: experiment and theory
• Verf.angabe: Anastasia Peters, Hendrik Herrmann, Martin Magg, Elisabeth Kaifer, Hans-Jörg Himmel
• Umfang: 12 S.
• Fussnoten: Gesehen am 26.07.2018
• Titel Quelle: Enthalten in: European journal of inorganic chemistry
• Jahr Quelle: 2012
• Band/Heft Quelle: (2012), 10, S. 1620-1631
• ISSN Quelle: 1099-0682
• DOI: doi:10.1002/ejic.201101366
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1577977335

Abstract

Substitution of the aromatic hydrogen atoms in the electron donors 1,2,4,5-tetrakis(tetramethylguanidino)benzene (1a) and 1,2,4,5-tetrakis(N,N′-dimethyl-N,N′-ethyleneguanidino)benzene (1b) by iodide (to give 2a and 2b) and nitro groups (to give 3a and 3b) afforded new redox-active ligands. Their properties (electron donor capacity, Brønsted basicity and optical spectra) have been analyzed and compared with the unsubstituted 1,2,4,5-tetrakis(guanidino)benzenes. The experimental results are supplemented by quantum chemical calculations. The first late-transition metal complex of the push-pull ligand 3a was prepared and characterized and its oxidation studied.