Sodium astatide
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| Preferred IUPAC name
Sodium astatide | |||
| Identifiers | |||
3D model (JSmol)
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PubChem CID
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| Properties | |||
| NaAt | |||
| Molar mass | 233 g·mol−1 | ||
| Melting point | 518 °C (964 °F; 791 K) calculated[1] | ||
| Thermochemistry | |||
Std enthalpy of
formation (ΔfH⦵298) |
−257 kJ/mol (estimated)[2] | ||
| Related compounds | |||
Related compounds
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Magnesium astatide | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Sodium astatide is a binary inorganic compound, a salt of sodium and astatine with the chemical formula NaAt.[3][4]
Synthesis
[edit]Sodium astatide solution has been prepared by distilling astatine from the bismuth alpha-ray target where it was prepared, dissolving in sodium bicarbonate solution, and reducing At+ and At3+ ions with ascorbic acid.[5]
Uses
[edit]Sodium astatide has been proposed for use in radiation therapy to replace 131I.[6][5]
References
[edit]- ^ Oshchapovskii, V. V. (2014). "A new method of calculation of the melting temperatures of crystals of Group 1A metal halides and francium metal". Russian Journal of Inorganic Chemistry. 59 (6): 561–567. doi:10.1134/S0036023614060163. ISSN 0036-0236.
- ^ Burgers, Peter C.; Zeneyedpour, Lona; Luider, Theo M.; Holmes, John L. (2024). "Estimation of thermodynamic and physicochemical properties of the alkali astatides: On the bond strength of molecular astatine (At 2 ) and the hydration enthalpy of astatide (At − )". Journal of Mass Spectrometry. 59 (4) e5010. doi:10.1002/jms.5010. ISSN 1076-5174. PMID 38488842.
- ^ Watabe, Tadashi; Hosono, Makoto; Kinuya, Seigo; Yamada, Takahiro; Yanagida, Sachiko; Namba, Masao; Nakamura, Yoshihide (July 2021). "Manual on the proper use of sodium astatide ([211At]NaAt) injections in clinical trials for targeted alpha therapy (1st edition)". Annals of Nuclear Medicine. 35 (7): 753–766. doi:10.1007/s12149-021-01619-2. ISSN 1864-6433. PMC 8197710. PMID 33978932.
- ^ Ball, Philip (17 March 2020). "An affinity for astatine". Chemistry World. Retrieved 16 June 2023.
- ^ a b Y. Shirakami. "Preparation of [211At]-labeled sodium astatide (NaAt) by reducing with ascorbic acid for the treatment of thyroid cancer" (PDF). RIKEN Accel. Prog. Rep. 53: 171. Retrieved 16 June 2023.
- ^ "Breakthrough alpha-ray treatment of cancer without external radiation". EurekAlert!. Retrieved 16 June 2023.