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Teflic acid

Teflic acid

Teflic acid is a chemical compound with the formula . This strong acid is related to orthotelluric acid, . Teflic acid has a slightly distorted octahedral molecular geometry.

Preparation

Teflic acid was accidentally discovered by Engelbrecht and Sladky. Their synthesis did not yield the anticipated telluryl fluoride , but a mixture of volatile telluric compounds, containing : : (25%)

Teflic acid can also be prepared from fluorosulfonic acid and barium tellurate: :

It is also the first hydrolysis product of tellurium hexafluoride: :

Teflates

Boron teflate

The conjugate base of teflic acid is called the teflate anion, (not to be confused with triflate). Many teflates are known, one example being , that can be pyrolysed to give acid anhydride . :

The teflate anion is known to resist oxidation. This property has allowed the preparation several highly unusual species such as the hexateflates (in which M = As, Sb, Bi). Xenon forms the cation .

References

References

  1. (1982). "Ionisation Constants of Inorganic Acids and Bases in Aqueous Solution". Pergamon.
  2. Engelbrecht, A.; Sladky, F. "Pentafluoro-orthotellursaure, {{chem2. HOTeF5" ''Angewandte Chemie'' '''1964'''. ''76''('''9'''), 379-380, {{doi. 10.1002/ange.19640760912.
  3. Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. {{ISBN. 0-12-352651-5.
  4. Mercier, H. P.A.; Sanders, J. C. P.; Schrobilgen, G. J. "The Hexakis(pentafluorooxotellurato)pnictate(V) Anions, {{chem2. 10.1021/ja00086a025.
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oxyfluorides tellurium(vi)-compounds substances-discovered-in-the-1960s
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