Jump to content

Sodium technetate(V)

From Wikipedia, the free encyclopedia
(Redirected from Sodium metatechnetate)
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

[edit]

Sodium technetate(V) can be prepared by co-heating technetium, sodium pertechnetate and sodium oxide, and decomposition occurs at high temperature.[3] In addition, Na299MoO4 decomposed in a NaOH solution will also produce NaTcO3.[4] The NaTcO3 puckering effect resembles NaMoO3 and the band between the egπ and a1g state disappears.[5]

Properties

[edit]

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

[edit]
  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

[edit]
  • 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.