(NH <sub>4</sub> ) <sub>2</sub> [Tc <sub>2</sub> O <sub>2</sub> (S <sub>2</sub> O <sub>7</sub> ) <sub>4</sub> ]: An Unexpected Technetium(V)‐Sulfate From the Reaction of (NH <sub>4</sub> )(TcO <sub>4</sub> ) With SO <sub>3</sub>
The reaction of ammonium pertechnetate, (NH<sub>4</sub>)(TcO<sub>4</sub>), with SO<sub>3</sub> leads to crystals of (NH<sub>4</sub>)<sub>2</sub>[Tc<sub>2</sub>O<sub>2</sub>(S<sub>2</sub>O<sub>7</sub>)<sub>4</sub>] (monoclinic, P2<sub>1</sub>/c, Z = 2, a = 775.67(5), b = 1339.55(8), c = 1233.32(8) pm, β = 100.566(2)°). The compound contains the dimeric [Tc<sub>2</sub>O<sub>2</sub>(S<sub>2</sub>O<sub>7</sub>)<sub>4</sub>]<sup>2-</sup> anion with the Tc atom connected by disulfate anions. It is astonishing that even under the oxidizing reaction conditions, reduction of the Tc(VII) starting material occurs. Contrastingly, an analogous reaction of (NH<sub>4</sub>)(ReO<sub>4</sub>) with SO<sub>3</sub> gives the Re(VII) sulfate (NH<sub>4</sub>)[ReO<sub>2</sub>(S<sub>2</sub>O<sub>7</sub>)<sub>2</sub>] (orthorhombic, Pca2<sub>1</sub>, Z = 8, a = 1842.7(1), b = 847.03(5), c = 1663.8(1) pm). The compounds have been further studied by vibrational spectroscopy and quantum mechanical calculations.
Authors
- Stefan Sutorius (ORCID: https://orcid.org/0000-0001-9978-157X)
- Mathias S. Wickleder (ORCID: https://orcid.org/0000-0002-8864-4227)
- David van Gerven (ORCID: https://orcid.org/0000-0001-9712-551X)
- Jörn Bruns (ORCID: https://orcid.org/0000-0002-8589-6154)
- Erik Strub (ORCID: https://orcid.org/0000-0002-4136-2871)
- Julian Heinen
Institutions
- University of Cologne (DE)
- Technische Universität Berlin (DE)
Publication Details
- Journal
- Chemistry - A European Journal
- Published
- 2025-11-30
- DOI
- https://doi.org/10.1002/chem.202502493
- Primary Topic
- Radiopharmaceutical Chemistry and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00