Potassium pertechnetate

Potassium pertechnetate is a chemical compound of technetium and potassium, with the chemical formula of KTcO4.

Potassium pertechetate
Identifiers
3D model (JSmol)
  • InChI=1S/K.4O.Tc/q+1;;;;-1; checkY
    Key: RXUFGZNRBITENT-UHFFFAOYSA-N checkY
  • [K+].[O-][Tc](=O)(=O)=O
Properties
KTcO4
Molar mass 201.1
Appearance colourless solid[1]
Melting point 540 °C
Boiling point around 1000 °C
2.13g (20 °C)
Related compounds
Other anions
 potassium permanganate
potassium perrhenate
Other cations
 sodium pertechnetate
ammonium pertechnetate
silver pertechnetate
Related compounds
 technetium(VII) oxide
pertechnetic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Potassium pertechnetate can be obtained by the neutralisation of potassium hydroxide and pertechnetic acid:[2]

KOH + HTcO4 → KTcO4 + H2O

Properties

The distance of the Tc–O bond in potassium pertechnetate is 173.9 pm and the angle of the O–Tc–O bond is 108.05° and 110.19°. The distance between the potassium and the oxygen is 289.36 pm and 286 pm.[2] Potassium pertechnetate crystallizes in the tetragonal crystal system with space group I41/a (space group no. 88). The lattice parameters are a = 563.0 pm and c = 1286.7 pm.[3]

Use

Potassium pertechate is used to prepare other radiopharmaceuticals.[2]

References
  1. 《无机化学丛书》. 第九卷 锰分族 铁系 铂系. 谢高阳 等主编. 科学出版社. 3.13.3 含氧酸及其盐类. P116
  2. Weaver, Jamie; Soderquist, Chuck Z.; Washton, Nancy M.; Lipton, Andrew S.; Gassman, Paul L.; Lukens, Wayne W.; Kruger, Albert A.; Wall, Nathalie A.; McCloy, John S. (2017-03-06). "Chemical Trends in Solid Alkali Pertechnetates". Inorganic Chemistry. 56 (5): 2533–2544. doi:10.1021/acs.inorgchem.6b02694. ISSN 0020-1669. PMID 28221786.
  3. Klaus Schwochau (Nov 2008), Technetium: Chemistry and Radiopharmaceutical Applications, John Wiley & Sons, p. 129, ISBN 978-3527613373
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