Chemistry:Gold heptafluoride
From HandWiki
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| Names | |||
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| IUPAC name
Difluorinegold(V) fluoride
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| Other names
Gold heptafluoride
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| Identifiers | |||
3D model (JSmol)
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| Properties | |||
| AuF7 | |||
| Molar mass | 322.956 g/mol | ||
| Hazards | |||
| Main hazards | Corrosive, toxic | ||
| Related compounds | |||
Other cations
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ReF7, IF7 | ||
Related compounds
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AuF3, AuF5 | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |||
 verify (what is   ?)
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| Infobox references | |||
Gold heptafluoride is a gold(V) compound with the empirical formula AuF7. The synthesis of this compound was first reported in 1986.[1] However, current calculations suggest that the structure of the synthesized molecule was actually a difluorine ligand on a gold pentafluoride core, AuF5·F2. That would make it the first difluorine complex and the first compound containing a fluorine atom with an oxidation state of zero. The gold(V)–difluorine complex is calculated to be 205 kJ/mol more stable than gold(VII) fluoride. The vibrational frequency at 734 cm−1 is the hallmark of the end-on coordinated difluorine molecule.[2]
References
- ↑ Timakov, A. A.; Prusakov, V. N.; Drobyshevskii, Y. V. (1986). "Gold heptafluoride" (in Russian). Dokl. Akad. Nauk SSSR 291: 125–128. "Archived copy". http://www.tashbook.com/gold/Timakov%20et%20al%201985.pdf.
- ↑ Himmel, Daniel; Riedel, Sebastian (2007-05-31). "After 20 Years, Theoretical Evidence That "AuF7" Is Actually AuF5·F2". Inorganic Chemistry 46 (13): 5338–5342. doi:10.1021/ic700431s. PMID 17511450.
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