Potassium pertechnetate

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

Potassium pertechnetate

Identifiers
CAS Number	75492-44-3 99Tc Y
3D model (JSmol)	Interactive image
InChI InChI=1S/K.4O.Tc/q+1;;;;-1; Y Key: RXUFGZNRBITENT-UHFFFAOYSA-N Y
SMILES [K+].[O-][Tc](=O)(=O)=O
Properties
Chemical formula	KTcO4
Molar mass	201.1
Appearance	colourless solid[1]
Melting point	540 °C
Boiling point	around 1000 °C
Solubility in water	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 pertechnetate is used to prepare other radiopharmaceuticals.^[2]