Actinium(III) phosphate[1]
Names
Other names
Actinium monophosphate
Identifiers
3D model (JSmol)
  • InChI=1S/Ac.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+3;/p-3
    Key: PVLPTTWSKILMQQ-UHFFFAOYSA-K
  • [O-]P(=O)([O-])[O-].[Ac+3]
Properties
AcPO4
Molar mass 321.9714 g/mol
Appearance White solid
Density 5.48 g/cm3
Structure
hexagonal[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Actinium(III) phosphate is a white-colored chemical compound of the radioactive element actinium. This compound was created by reacting actinium(III) chloride with monosodium phosphate in aqueous hydrochloric acid. This resulted in the hemihydrate AcPO4·1/2H2O, whose structure was confirmed by x-ray diffraction to match that of lanthanum phosphate. To become anhydrous, it was heated to 700 °C, which resulted in a solid that was black (presumably due to the presence of impurities), and whose specific X-ray structure did not match that of other known correspond to other actinide phosphates.[1]

References

  1. ^ a b the University of Michigan (1948). The Preparation of Actinium Compounds. U.S. Atomic Energy Commission, Technical Information Division. p. 4. Retrieved 16 April 2021.
  2. ^ Zachariasen, W. H. (1948). "Crystal chemical studies of the 5f-series of elements. I. New structure types". Acta Crystallographica. 1 (5): 265–268. Bibcode:1948AcCry...1..265Z. doi:10.1107/S0365110X48000703.
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