Technetium(VII) sulfide

Technetium(VII) sulfide

Names
Other names Technetium heptasulphide, ditechnetium heptasulphide
Identifiers
3D model (JSmol)	Interactive image
PubChem CID	22262427
InChI InChI=1S/7S.2Tc/q7*-2;2*+7 Key: AFSSMICCRUWSKE-UHFFFAOYSA-N
SMILES [S-2].[S-2].[S-2].[S-2].[S-2].[S-2].[S-2].[Tc+7].[Tc+7]
Properties
Chemical formula	S7Tc2
Molar mass	420 g·mol−1
Appearance	dark brown crystals
Solubility in water	insoluble
Related compounds
Related compounds	Rhenium(VII) sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Technetium(VII) sulfide is a binary inorganic chemical compound of technetium metal and sulfur with the chemical formula Tc₂S₇. ^{[1] [2] [3] [4]}

Synthesis

Passing hydrogen sulfide through acidic solutions of pertechnetates: ^{[5] [6] [7]}

2KTcO₄ + 7H₂S + 2HCl → Tc₂S₇↓ + 2KCl + 8H₂O

2NH₄TcO₄ + 7H₂S + 2HCl → Tc₂S₇↓ + 2NH₄Cl + 8H₂O

Chemical properties

It is restored by hydrogen at 1000 °C:

Tc₂S₇ + 7H₂ → 2Tc + 7H₂S

References

1. Saiki, Y.; Fukuzaki, M.; Sekine, T.; Kino, Y.; Kudo, H. (2003). "Technetium(VII) sulfide colloid growing observed by laser-induced photoacoustic spectroscopy". Journal of Radioanalytical and Nuclear Chemistry . 255 (1): 101–104. Bibcode:2003JRNC..255..101S. doi:10.1023/A:1022283831945 . Retrieved 23 July 2024.
2. Zolle, Ilse (28 January 2007). Technetium-99m Pharmaceuticals: Preparation and Quality Control in Nuclear Medicine. Springer Science & Business Media. p. 207. ISBN   978-3-540-33990-8 . Retrieved 23 July 2024.
3. Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 1968. p. 72. ISBN   978-0-08-057860-6 . Retrieved 23 July 2024.
4. Cohen, M. B.; Spolter, L.; Szymendera, J.; Radwan, M. (April 1972). "Rhenium and technetium heptasulfide". Journal of Nuclear Medicine . 13 (4): 287–288. ISSN   0161-5505. PMID   5011784.
5. Boschke, Friedrich L. (31 December 1981). Inorganic Chemistry. Walter de Gruyter GmbH & Co KG. p. 131. ISBN   978-3-11-270829-3 . Retrieved 23 July 2024.
6. "CharChem. Technetium(VII) sulfide". easychem.org. Retrieved 23 July 2024.
7. Poineau, Frederic; Burton-Pye, Benjamin P.; Sattelberger, Alfred P.; Czerwinski, Kenneth R.; German, Konstantin E.; Fattahi, Massoud (2018). "Speciation and reactivity of heptavalent technetium in strong acids" . New Journal of Chemistry . 42 (10): 7522–7528. doi:10.1039/c7nj04912a. OSTI   1435661 . Retrieved 23 July 2024.