Gold(I) Compounds without Significant Aurophilic Intermolecular Interactions: Synthesis, Structure, and Electronic Properties of Ph3PAuC(O)NHMe and Au3(PhCH2NCOMe)3: Comparative Monomeric and Trimeric Analogues of the Solvoluminescent Trimer, Au3(MeNCOMe)3
| Autor: | Alan L. Balch, Jess C. Vickery, Marilyn M. Olmstead |
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| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Inorganic Chemistry. 38:3494-3499 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/ic990080b |
| Popis: | The preparations of Ph3PAuC(O)NHMeand Au3(PhCH2NCOMe)3 are reported. In solution Ph3PAuC(O)NHMe is unstable and readily deposits metallic gold. Colorless needles of the monomeric complex, Ph3PAuC(O)NHMe, crystallize in the monoclinic space group P21/c, with a = 8.993(2) A, b = 22.583(5) A, c = 8.932(2) A, β = 98.22(2)°, at 123 K with Z = 4. Refinement of 2609 reflections and 114 parameters yielded R = 0.0455. A hydrogen-bonded intermolecular network links molecular units through N−H···O hydrogen bonds. No aurophilic interactions are present in this solid. The crystal structure of the cyclic trinuclear organogold compound, Au3(PhCH2NCOMe)3, reveals that the complex does not associate into a trigonal prismatic array via intermolecular interactions of gold(I) centers as is seen in the triangular complex, Au3(MeNCOMe)3. Rather, the complex packs in a stair-step fashion with eight discrete molecules in the asymmetric unit. Additionally, the solvent-stimulated emission (solvoluminescence) associated with Au3(Me... |
| Databáze: | OpenAIRE |
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