| Autor: |
Tiefenthaler, Susanne, Streitferdt, Verena, Baumann, Josef, G��rtner, Stefanie, Gschwind, Ruth Maria, Korber, Nikolaus |
| Rok vydání: |
2020 |
| Předmět: |
|
| DOI: |
10.5283/epub.44609 |
| Popis: |
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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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