Synthesis and Characterization of Three Multi‐Shell Metalloid Gold Clusters Au 32 (R 3 P) 12 Cl 8
| Autor: | Nia Pollard, Sebastian Kenzler, Claudio Schrenk, Florian Fetzer, Andreas Schnepf, Andre Clayborne, Andrew R. Frojd |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010405 organic chemistry Jahn–Teller effect Shell (structure) General Chemistry 010402 general chemistry 01 natural sciences Chloride Catalysis 3. Good health 0104 chemical sciences Bond length Dodecahedron Crystallography Cluster (physics) medicine Metalloid Solubility medicine.drug |
| Zdroj: | Angewandte Chemie International Edition. 58:5902-5905 |
| ISSN: | 1521-3773 1433-7851 |
| DOI: | 10.1002/anie.201900644 |
| Popis: | Three multi-shell metalloid gold clusters of the composition Au32 (R3 P)12 Cl8 (R=Et, n Pr, n Bu) were synthesized in a straightforward fashion by reducing R3 PAuCl with NaBH4 in ethanol. The Au32 core comprises two shells, with the inner one constituting a tilted icosahedron and the outer one showing a distorted dodecahedral arrangement. The outer shell is completed by eight chloride atoms and twelve R3 P groups. The inner icosahedron shows bond lengths typical for elemental gold while the distances of the gold atoms in the dodecahedral arrangement are in the region of aurophilic interactions. Quantum-chemical calculations illustrate that the Jahn-Teller effect observed within the cluster core can be attributed to the electronic shell filling. The easily reproducible synthesis, good solubility, and high yields of these clusters render them perfect starting points for further research. |
| Databáze: | OpenAIRE |
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