0000000001305029
AUTHOR
Doris Kunz
ChemInform Abstract: Electrosynthesis of Imidazolium Carboxylates.
For the first time the synthesis of imidazolium carboxylates is efficiently achieved by electrochemical reduction of imidazolium salts under very mild conditions.
Electrosynthesis of imidazolium carboxylates.
Synthesis of imidazolium carboxylate compounds was efficiently achieved by electrochemical reduction of imidazolium precursors under very mild conditions.
Consequences of the One-Electron Reduction and Photoexcitation of Unsymmetric Bis-imidazolium Salts
Coupling of uronium salts with in situ generated N-heterocyclic carbenes provides straightforward access to symmetrical [4](2+) and unsymmetrical bis-imidazolium salts [6](2+) and [9](2+) . As indicated by cyclic and square-wave voltammetry, [6](2+) and [9](2+) can be (irreversibly) reduced by one electron. The initially formed radicals [6](.+) and [9](.+) undergo further reactions, which were probed by EPR spectroscopy and density functional calculations. The final products of the two-electron reduction are the two carbenes. Upon irradiation with UV light both [6](2+) and [9](2+) emit at room temperature in solution but with dramatically different characteristics. The different fluorescenc…
Synthesis of copper(II) and gold(III) bis(NHC)-pincer complexes
Abstract CuII and AuIII chlorido complexes bearing the bis(NHC) carbazolide pincer ligand (bimca) were synthesized by transmetallation from the respective lithium complex [Li(bimca)] (NHC=N-heterocyclic carbene). In the case of copper, two different molecular structures were obtained depending on the copper source. With Cu(II) chloride the paramagnetic mononuclear [Cu(bimca)Cl] complex is formed and has been characterized by EPR spectroscopy and X-ray structure analysis, while copper(I) chloride leads under oxidation to a dinuclear structure in which two cationic [CuII(bimca)] moieties are bridged by one chlorido ligand. The positive charge is compensated by the [CuCl2]− counter ion, as pro…
CCDC 939068: Experimental Crystal Structure Determination
Related Article: Guillaume de Robillard, Charles H. Devillers, Doris Kunz, Hélène Cattey, Eric Digard, and Jacques Andrieu|2013|Org.Lett.|15|4410|doi:10.1021/ol401949f
CCDC 1492154: Experimental Crystal Structure Determination
Related Article: Eva Jürgens, Oliver Back, Johannes J. Mayer, Katja Heinze, Doris Kunz|2016|Z.Naturforsch.,B:Chem.Sci.|71|1011|doi:10.1515/znb-2016-0158
CCDC 939067: Experimental Crystal Structure Determination
Related Article: Guillaume de Robillard, Charles H. Devillers, Doris Kunz, Hélène Cattey, Eric Digard, and Jacques Andrieu|2013|Org.Lett.|15|4410|doi:10.1021/ol401949f
CCDC 1492153: Experimental Crystal Structure Determination
Related Article: Eva Jürgens, Oliver Back, Johannes J. Mayer, Katja Heinze, Doris Kunz|2016|Z.Naturforsch.,B:Chem.Sci.|71|1011|doi:10.1515/znb-2016-0158