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
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]
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.