Promethium(III) phosphate

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promethium(III) phosphate
Phosphat-Ion.svg Pm3+.svg
Identifiers
3D model (JSmol)
PubChem CID
  • [O-]P(=O)([O-])[O-].[Pm+3]
Properties
PmPO4
Molar mass 241.89
Appearancepale yellow solid (hydrate)
garnet-red solid (anhydride) [1]
insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Promethium(III) phosphate is an inorganic compound, a salt of promethium and phosphate, with the chemical formula of PmPO4. It is radioactive. Its hydrate can be obtained by precipitation of soluble promethium salt and diammonium hydrogen phosphate at pH 3~4 (or obtained by hydrothermal reaction [2] ), and the hydrate can be obtained by burning at 960 °C to obtain the anhydrous form. [1] Its standard enthalpy of formation is −464 kcal/mol. [3]

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<span class="mw-page-title-main">Europium compounds</span> Chemical compounds with at least one europium atom

Europium compounds are compounds formed by the lanthanide metal europium (Eu). In these compounds, europium generally exhibits the +3 oxidation state, such as EuCl3, Eu(NO3)3 and Eu(CH3COO)3. Compounds with europium in the +2 oxidation state are also known. The +2 ion of europium is the most stable divalent ion of lanthanide metals in aqueous solution. Lipophilic europium complexes often feature acetylacetonate-like ligands, e.g., Eufod.

<span class="mw-page-title-main">Terbium compounds</span> Chemical compounds with at least one terbium atom

Terbium compounds are compounds formed by the lanthanide metal terbium (Tb). In these compounds, terbium generally exhibits the +3 oxidation state, such as TbCl3, Tb(NO3)3 and Tb(CH3COO)3. Compounds with terbium in the +4 oxidation state are also known, such as TbO2 and BaTbF6. Terbium can also form in the 0, +1 and +2 oxidation states.

<span class="mw-page-title-main">Promethium(III) bromide</span> Chemical compound

Promethium(III) bromide is an inorganic compound, with the chemical formula of PmBr3. It is radioactive salt. It is a crystal of the hexagonal crystal system, with the space group of P63/mc (No. 176).

References

  1. 1 2 F. Weigel; V. Scherer; H. Henschel (July 1965). "Unit Cells of the Monazite-Type Rare-Earth Phosphates". Journal of the American Ceramic Society. 48 (7): 383–384. doi:10.1111/j.1151-2916.1965.tb14768.x. ISSN   0002-7820 . Retrieved 2021-01-16.
  2. Nicolas Clavier; Nicolas Dacheux; Gilles Wallez; Michel Quarton (2006). "Hydrothermal Methods as a New Way of Actinide Phosphate Preparation". MRS Proceedings. 985. doi:10.1557/PROC-985-0985-NN04-08. ISSN   0272-9172 . Retrieved 2021-01-16.
  3. Marinova, L. A.; Yaglov, V. N. (1976). "Thermodynamic characteristics of phosphates of lanthanides". Zhurnal Fizicheskoi Khimii. 50 (3): 802. ISSN   0044-4537.