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Technetium(VII) sulfide

From Wikipedia, the free encyclopedia
Technetium(VII) sulfide
Names
Other names
Technetium heptasulphide, ditechnetium heptasulphide
Identifiers
3D model (JSmol)
  • InChI=1S/7S.2Tc/q7*-2;2*+7
    Key: AFSSMICCRUWSKE-UHFFFAOYSA-N
  • [S-2].[S-2].[S-2].[S-2].[S-2].[S-2].[S-2].[Tc+7].[Tc+7]
Properties
S7Tc2
Molar mass420 g·mol−1
Appearancedark brown crystals
insoluble
Related compounds
Related compounds
Rhenium(VII) sulfide
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa).
Chemical compound

Technetium(VII) sulfide is a binaryinorganic chemical compound oftechnetium metal andsulfur with the chemical formulaTc2S7.[1][2][3][4]

Synthesis

[edit]

Passinghydrogen sulfide through acidic solutions of pertechnetates:[5][6][7]

2KTcO4 + 7H2S + 2HCl → Tc2S7↓ + 2KCl + 8H2O
2NH4TcO4 + 7H2S + 2HCl → Tc2S7↓ + 2NH4Cl + 8H2O

Chemical properties

[edit]

It is restored by hydrogen at 1000 °C:

Tc2S7 + 7H2 → 2Tc + 7H2S

References

[edit]
  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. Retrieved23 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. Retrieved23 July 2024.
  3. ^Advances in Inorganic Chemistry and Radiochemistry.Academic Press. 1968. p. 72.ISBN 978-0-08-057860-6. Retrieved23 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. Retrieved23 July 2024.
  6. ^"CharChem. Technetium(VII) sulfide". easychem.org. Retrieved23 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. Retrieved23 July 2024.
Technetium(II)
Technetium(III)
Technetium(IV)
Technetium(V)
Technetium(VI)
Technetium(VII)
Sulfides(S2−)
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