Tiefenthaler, Susanne M. and Streitferdt, Verena and Baumann, Josef and Gaertner, Stefanie and Gschwind, Ruth M. and Korber, Nikolaus (2020) On the Reactivity of (NHCAuCl)-Au-t-Au-Bu towards Rb6Cs6Si17: The First Gold-Silicon Cluster [((NHCAu)-Au-t-Au-Bu)(6)(eta(2)-Si-4)]Cl-2 center dot 7NH(3)and an Imide Capped Gold Triangle ((NHCAu)-Au-t-Au-Bu)(3)NHCl. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 646 (18). pp. 1595-1602. ISSN 0044-2313, 1521-3749
Full text not available from this repository. (Request a copy)Abstract
Crystals of the two new compounds ((NHCAu)-Au-tBu)(3)NHCl and [((NHCAu)-Au-tBu)(6)(eta(2)-Si-4)]Cl-2 center dot 7NH(3)could be isolated from the reaction of Rb(6)Cs(6)Si(17)with (NHCAuCl)-Au-tBu in the presence of [2.2.2]-cryptand in liquid ammonia. Both compounds were characterized by single-crystal X-ray diffraction and crystallize trigonally without any alkali metals or chelating ligands. Additionally, the crystal of [((NHCAu)-Au-tBu)(6)(eta(2)-Si-4)]Cl-2 center dot 7NH(3)was further interpreted by means of ELF and NBO calculations. In the case of ((NHCAu)-Au-tBu)(3)NHCl, NMR experiments provided an exceptional insight into the reaction processes in solution and allowed for the detection of sequential precursors. In the class of capped gold triangles ((NHCAu)-Au-tBu)(3)NHCl impresses with its unique characteristics of being capped by an imide and bound toN-heterocyclic carbenes as ligands instead of the ubiquitously employed phosphines. The gold capped silicon tetrahedron [((NHCAu)-Au-tBu)(6)(eta(2)-Si-4)]Cl-2 center dot 7NH(3)represents the first known silicide-gold compound, as well as the first known functionalized Zintl anion, crystallized with a cationic central moiety.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | N-HETEROCYCLIC CARBENE; ZINTL IONS; CRYSTAL-STRUCTURE; COMPLEXES; BOND; CHEMISTRY; SI-4(4-); AMMONIA; LIGAND; NHC; Liquid ammonia; Zintl phases; NMR spectroscopy; Silicide; Reactivity; Gold |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Nikolaus Korber Chemistry and Pharmacy > Institut für Organische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Ruth Gschwind |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Mar 2021 13:13 |
| Last Modified: | 10 Mar 2021 13:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/43737 |
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