Technetium(IV) sulfide

Technetium(IV) sulfide

Names
Other names Technetium disulphide
Identifiers
CAS Number	34312-50-0
3D model (JSmol)	Interactive image
InChI InChI=1S/2S.Tc Key: YNVKFYSGICQOCU-UHFFFAOYSA-N
SMILES [Tc].[S].[S]
Properties
Chemical formula	S2Tc
Molar mass	162 g·mol^−1
Structure
Crystal structure	trigonal
Related compounds
Related compounds	Molybdenum disulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Technetium disulphide is a binary inorganic chemical compound of technetium metal and sulfur with the chemical formula TcS₂.^[1][2][3][4]

Synthesis

The compound can be prepared from the higher oxide:^[5][6]

2Tc₂O₇ + 15S → 4TcS₂ + 7SO₂

Also, the compound can be prepared by the reaction between both elements in a sealed tube at 450 °C, by the reaction between such components as Tc₂(O₂CCH₃)₅ and H₂S-gas in a flowing system at 450 °C, and by the reaction between K₂TcCl₆ and H₂S-gas in sulfuric acid.^[7]

Physical properties

Technetium disulfide is isomorphous with rhenium disulfide and has an MoS₂-type structure.^[8]

Technetium disulphide is reduced to the metal if heated to 1000 °C in a hydrogen atmosphere.

References

1. "WebElements Periodic Table » Technetium » technetium disulphide". webelements.com. Retrieved 22 July 2024.
2. German, Konstantin E.; Shiryaev, Andrey A.; Safonov, Alexey V.; Obruchnikova, Yana A.; Ilin, Viktor A.; Tregubova, Varvara E. (28 March 2015). "Technetium sulfide – formation kinetics, structure and particle speciation". Radiochimica Acta. 103 (3): 199–203. doi:10.1515/ract-2014-2369. ISSN 2193-3405. Retrieved 22 July 2024.
3. Pearce, Carolyn I.; Icenhower, Jonathan P.; Asmussen, R. Matthew; Tratnyek, Paul G.; Rosso, Kevin M.; Lukens, Wayne W.; Qafoku, Nikolla P. (21 June 2018). "Technetium Stabilization in Low-Solubility Sulfide Phases: A Review". ACS Earth and Space Chemistry. 2 (6): 532–547. Bibcode:2018ESC.....2..532P. doi:10.1021/acsearthspacechem.8b00015. ISSN 2472-3452. Retrieved 22 July 2024.
4. Suthersan, Suthan S.; Horst, John; Schnobrich, Matthew; Welty, Nicklaus; McDonough, Jeff (25 November 2016). Remediation Engineering: Design Concepts, Second Edition. CRC Press. p. 403. ISBN 978-1-4987-7336-2. Retrieved 22 July 2024.
5. "Реакция взаимодействия оксида технеция(VII) и серы" (in Russian). chemiday.com. Retrieved 22 July 2024.
6. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 37-94. ISBN 978-0-412-30120-9. Retrieved 22 July 2024.
7. Ferrier, Maryline; Kerlin, William M.; Poineau, Frederic; Sattelberger, Alfred P.; Czerwinski, Kenneth R. (22 October 2013). "Recent developments in the synthetic chemistry of technetium disulfide". Dalton Transactions. 42 (44): 15540–15543. doi:10.1039/C3DT52079J. ISSN 1477-9234. PMID 24056388. Retrieved 22 July 2024.
8. Advances in Inorganic Chemistry and Radiochemistry. Academic Press. 1968. p. 27. ISBN 978-0-08-057860-6. Retrieved 22 July 2024.