Synthesis and Characterization of Silver(I) and Gold(I) Complexes Bearing a Pyrido-annelated N-Heterocyclic Carbene: A Rare Example of a Cocrystal Containing Two Different Gold(I) Complexes
| العنوان: | Synthesis and Characterization of Silver(I) and Gold(I) Complexes Bearing a Pyrido-annelated N-Heterocyclic Carbene: A Rare Example of a Cocrystal Containing Two Different Gold(I) Complexes |
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| المؤلفون: | Margit Kriechbaum, Uwe Monkowius, Daniela Otte, Manuela List |
| المصدر: | Zeitschrift für Naturforschung B. 69:1188-1198 |
| بيانات النشر: | Walter de Gruyter GmbH, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Crystallography, chemistry.chemical_compound, chemistry, Hexafluorophosphate, Inorganic chemistry, Stacking, General Chemistry, Nuclear magnetic resonance spectroscopy, Phosphorescence, Electron spectroscopy, Cocrystal, Fluorescence, Carbene |
| الوصف: | The cyclohexyl-substituted imidazo[1,5-a]pyridin-2-ium hexafluorophosphate, 2a, has been prepared as precursor for the respective pyrido-annelated N-heterocyclic carbene. [(NHC)2Ag]PF6, 3, has been synthesized by the reaction of 2a with AgCl=KOH in dichloromethane (DCM). Unexpectedly, the reaction of 3 with (tht)AuBr yielded both (NHC)AuBr and [(NHC)Au(tht)]PF6 which formed a 1 : 1 cocrystal (4a,b). The complexes are aggregated to infinite chains, which are governed by both π-π stacking and weak aurophilic interactions. Subsequent oxidation of the co-crystalline material with CsBr3 gave (NHC)AuBr3, 5. All compounds were characterized by NMR spectroscopy, mass spectrometry and elemental analysis. Additionally, compounds 2a and 5 were investigated by electronic spectroscopy: 2a behaves like a typical aromatic compound exhibiting absorption and fluorescence bands attributable to π-π* transitions. The Au(III) complex 5 exhibits ligand-centered fluorescence at room temperature and both ligand-centered fluorescence and a weak phosphorescence at 77 K. |
| تدمد: | 1865-7117 0932-0776 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::4ae6beb4a8e1403a3b47eb052fc30fbf https://doi.org/10.5560/znb.2014-4175 |
| رقم الأكسشن: | edsair.doi...........4ae6beb4a8e1403a3b47eb052fc30fbf |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18657117 09320776 |
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