page_title: Teflic acid
section_title: Teflates
hierarchical_section_title: Teflic acid / Teflates
caption_attribution_description: Ball-and-stick model of the boron teflate molecule, a compound derived from teflic acid. Colour&#160;code: &#160;&#160;Oxygen,&#160;O:&#160;red &#160;&#160;Boron,&#160;B:&#160;pink &#160; Yellow-green: Fluorine, F &#160;&#160;Tellurium,&#160;Te:&#160;brown
context_page_description: Teflic acid is the chemical compound with the formula HOTeF₅. This strong acid is related to orthotelluric acid, Te(OH)₆. Teflic acid has a slightly distorted octahedral geometry.
context_section_description: The conjugate base of teflic acid is called the teflate anion, F₅TeO⁻ (not to be confused with triflate). Many teflates are known, examples being B(OTeF₅)₃ and the acid anhydride O(TeF₅)₂. Pyrolysis of the boron compound gives the dimer (TeF₄O)₂
  2 B(OTeF₅)₃ → 2 B(OTeF₅)₂F + (OTeF₄)₂
  The teflate anion is known to resist oxidation. This property has allowed the preparation several highly unusual species such as the hexateflates M(OTeF₅)₆⁻ (M = As, Sb, Bi). Xenon forms the cation Xe(OTeF₅)⁺.
caption: Boron teflate
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