Sodium technetate(V)

Sodium technetate(V)
Sodium metatechnetate
Names
IUPAC name
Sodium technetate(V)
Other names
Sodium metatechnetate
Identifiers
3D model (JSmol)
  • [Na+].[O-][Tc](=O)=O
Properties
NaTcO3
Molar mass 168.8942 g/mol
Appearance black solid[1]
Melting point 800 °C (1,470 °F; 1,070 K) (decomposes)[1]
insoluble
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 toxic, radioactive
Related compounds
Other anions
 Sodium pertechnetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Sodium technetate(V) is an inorganic compound with the chemical formula NaTcO3. It is a perovskite material and a rare example of an insoluble sodium salt.[2]

Preparation

Sodium technetate(V) can be prepared by co-heating technetium, sodium pertechnetate and sodium oxide, and decomposition occurs at high temperature.[3] In addition, Na99
2MoO4 decomposed in a NaOH solution will also produce NaTcO3.[4] The NaTcO3 puckering effect resembles NaMoO3 and the band between the eπ
g and a1g state disappears.[5]

Properties

NaTcO3 is a black solid that is a member of the Na2O–Tc2O5 system. It is stable to 800 °C (1,470 °F; 1,070 K).[1]

References

  1. ^ a b c Keller, C.; Kanellakopulos, B. (1965-04-01). "Ternäre oxide des drei-bis siebenwertigen technetiums mit alkalien". Journal of Inorganic and Nuclear Chemistry (in German). 27 (4): 787–795. doi:10.1016/0022-1902(65)80438-9. ISSN 0022-1902.
  2. ^ Sabine Körbel, Miguel A. L. Marques, Silvana Botti (25 February 2016). "Stability and electronic properties of new inorganic perovskites from high-throughput ab initio calculations". Journal of Materials Chemistry C. 4 (15): 3157–3167. doi:10.1039/C5TC04172D. ISSN 2050-7526. Retrieved 3 May 2023.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ 无机化学丛书. 第九卷 锰分族 铁系 铂系, pg. 122. 3.11 氧化数为V的锝和铼化合物.
  4. ^ M. Fis̆er, V. Brabec, O. Dragoun, A. Kovalík, J. Frána, M. Rys̆avý (1985). "Determination of 99mTc valent form in solids by measurement of internal conversion electrons". The International Journal of Applied Radiation and Isotopes. 36 (3): 219–222. doi:10.1016/0020-708X(85)90071-7. Archived from the original on 2018-07-02. Retrieved 3 May 2023.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  5. ^ M. H. N. Assadi, Masashi Okubo, Atsuo Yamada, Yoshitaka Tateyama (8 February 2018). "Oxygen redox in hexagonal layered NaxTMO3 (TM = 4d elements) for high capacity Na ion batteries". Journal of Materials Chemistry A. 6 (8): 3747–3753. doi:10.1039/C7TA10826E. ISSN 2050-7488. Retrieved 3 May 2023.{{cite journal}}: CS1 maint: multiple names: authors list (link)

External reading

  • Keller, C.; Kanellakopulos, B. (April 1965). "Ternäre oxide des drei-bis siebenwertigen technetiums mit alkalien" [Ternary oxides of tri- to septivalent technetium and alkali metals]. Journal of Inorganic and Nuclear Chemistry. 27 (4): 787–795. doi:10.1016/0022-1902(65)80438-9.
  • Kanellakopulos, Basil. The ternary oxide of 3-to 7-valent technetium with alkalis. (1964), (AEC Accession No. 31424, Rept. No. KFK-197), pg. 73.