<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n"^^ . "This work focuses on the synthesis and characterization of the new guanidinyl-functionalized aromatic compounds (GFA-4) 1,4,5,8-tetrakis(N,N,N',N' - tetramethylguanidinyl)naphthalene (ttmgn) and 1,4,5,8-tetrakis(N,N,N',N'-dimethylethylenguanidinyl)naphthalene (tdmegn) as well as on the coordination chemistry of these ligands and the use of the new coordination compounds to stabilize monoanionic polyhalides. ttmgn and tdmegn represent strong electron-donors and redox-active ligands. Investigation of the redox behavior using cyclic voltammetry showed the existence of two reversible oxidation processes (oxida-tion to two and fourfold oxidized species) respectively, where tdmegn is a slightly better electron donor in CH3CN than ttmgn. Two and fourfold oxidized ligands were obtained fully characterized. Study of the basic properties showed ttmgn to be a double proton sponge. The protonation experiments on these \"superbases\" were supported by quantum chemical calculations.\r\nA general feature of the characterized coordination compounds was the displacement of the metals from the aromatic plane. The copper(I) complexes [ttmgn(CuI)2] and [ttmgn(CuBr)2] were synthesized and their redox chemistry analyzed. Magnetic superexchange through the ligand unit is studied for the binuclear Co(II) complexes trans-[ttmgn(CoCl2)2] and cis-[tdmegn(CoCl2)2]. SQUID measurements show an extremely weak antiferromagnetic coupling. The dynamic behavior of the metal centers was studied on the example of the Al(III) complex [ttmgn(AlMe2)2][BPh4]2 using NMR experiments. Furthermore, a number of new mono- and binuclear cationic boron complexes was prepared with the ligands ttmgn and btmgn (1,8-Bis(N,N,N',N'-tetramethylguanidinyl)naphthalene). The exchange process between the BF2 groups and BF4 anions in the salt [ttmgn(BF2)2][BF4]2 measured with 19F EXSY NMR spectroscopy points to a complexation equilibrium. It could be shown that the guanidine-boron bond is sufficiently weak to allow the presence of a small quantity of the redox-active ttmgn in solution. Finally, a strategy for the synthesis of polyhalide monoanions was introduced, in which the reducing agent ttmgn is in the cationic complex [ttmgn(BF2)2][BF4]2 \"wrapped\". Wrapped up in the cationic complex, the reduction power is evidently greatly reduced. Moreover, the relatively large size of the cationic complexes conduces to stabilize monoanionic polyhalides. So reaction of [ttmgn(BF2)2][BF4]2 with I2 and Br2 led respectively to the formation of [I7]‒ and [Br5]‒. This work provides the first complete characterization of the [Br5]‒ monoanion including X-Ray crystal structure.\r\n"^^ . "2012-11-29" . . . . . . . "Viktoriia"^^ . "Vitske"^^ . "Viktoriia Vitske"^^ . . . . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (PDF)"^^ . . . "Dissertation Vika Vitske.pdf"^^ . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Vierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden\r\n (Other)"^^ . . . . . . "small.jpg"^^ . . "HTML Summary of #14167 \n\nVierfach Guanidinyl-funktionalisierte Aromaten: Synthese, Eigenschaften und Anwendung als organische Elektronendonoren und redoxaktive Liganden \n\n\n" . "text/html" . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .