Pertechnetic acid
 | |
| Names | |
|---|---|
| IUPAC name
Pertechnetic acid | |
| Identifiers | |
| 14332-45-7 | |
| ChemSpider | 9979749  |
| |
| Jmol-3D images | Image |
| PubChem | 11805084 |
| |
| Properties | |
| Molecular formula |
HO4Tc |
| Molar mass | 163.91 g·mol−1 |
| Related compounds | |
| Other anions |
Permanganic acid Perrhenic acid |
| Other cations |
Sodium pertechnetate |
| Related compounds |
Perchloric acid |
| Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
| Infobox references | |
Pertechnetic acid (HTcO4) is a compound of technetium that is produced by reacting technetium(VII) oxide (Tc2O7) with water or strong oxidizing acids, such as nitric acid, concentrated sulfuric acid, aqua regia.[1] The dark red hygroscopic substance is a strong acid, with a pKa of 0.32,[2] as such it exists almost etirely as the pertechnetate ion in aqueous solution.
In concentrated sulfuric acid, Tc(VII)tetraoxidotechnetate (pertechnetate) anion is unstable and undergoes conversion to the octahedral form of technetic(VII) acid TcO3(OH)(H2O)2.[3]
See also
References
- ↑ Schwochau, Klaus (2000). Technetium : Chemistry and radiopharmaceutical applications. Weinheim [u.a.]: Wiley-VCH. p. 127. ISBN 3-527-29496-1.
- ↑ Omori, T.; Asahina, K.; Suganuma, H. "Mechanism of the solvent extraction of pertechnetate with tetraphenylarsonium chloride". Journal of Radioanalytical and Nuclear Chemistry Articles 191 (1): 99–104. doi:10.1007/BF02035989.
- ↑ Poineau F, Weck PF, German K, Maruk A, Kirakosyan G, Lukens W, Rego DB, Sattelberger AP, Czerwinski KR (2010). "Speciation of heptavalent technetium in sulfuric acid: structural and spectroscopic studies" (PDF). Dalton Transactions 39 (37): 8616–8619. doi:10.1039/C0DT00695E. PMID 20730190.
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