potassium pertechnetate
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| Name = Potassium pertechnetate
| ImageFile = K2ReO4.png
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| CASNo = 75492-44-3
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| CASNo_Comment = 99Tc
| StdInChI=1S/K.4O.Tc/q+1;;;;-1;
| StdInChIKey=RXUFGZNRBITENT-UHFFFAOYSA-N
| SMILES=[K+].[O-][Tc](=O)(=O)=O
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| Section2 = {{Chembox Properties
| Formula = KTcO4
| MolarMass = 201.1
| Appearance = colourless solid《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
| Density =
| MeltingPt = 540 °C
| BoilingPt = around 1000 °C
| Solubility = 2.13g (20 °C)
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| Section8 = {{Chembox Related
| OtherAnions = potassium permanganate
potassium perrhenate
| OtherCations = sodium pertechnetate
ammonium pertechnetate
silver pertechnetate
| OtherCompounds = technetium(VII) oxide
pertechnetic acid
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Potassium pertechnetate is a chemical compound of technetium and potassium, with the chemical formula of KTcO4.
Preparation
Potassium pertechnetate can be obtained by the neutralisation of potassium hydroxide and pertechnetic acid:{{Cite journal |last1=Weaver |first1=Jamie |last2=Soderquist |first2=Chuck Z. |last3=Washton |first3=Nancy M. |last4=Lipton |first4=Andrew S. |last5=Gassman |first5=Paul L. |last6=Lukens |first6=Wayne W. |last7=Kruger |first7=Albert A. |last8=Wall |first8=Nathalie A. |last9=McCloy |first9=John S. |date=2017-03-06 |title=Chemical Trends in Solid Alkali Pertechnetates |url=https://pubs.acs.org/doi/10.1021/acs.inorgchem.6b02694 |journal=Inorganic Chemistry |language=en |volume=56 |issue=5 |pages=2533–2544 |doi=10.1021/acs.inorgchem.6b02694 |pmid=28221786 |issn=0020-1669|doi-access=free }}
: {{chem2|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. 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.{{Citation|author=Klaus Schwochau|title=Technetium: Chemistry and Radiopharmaceutical Applications|publisher=John Wiley & Sons|date=Nov 2008|page=129|isbn=978-3527613373}}
Use
References
{{reflist}}
{{Potassium compounds}}
{{Technetium compounds}}