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Scandium perrhenate

Scandium perrhenate
Names
IUPAC name
Scandium perrhenate(VI)
Other names
Scandium(III) perrhenate
Scandium(III) perrhenate(VI)
Identifiers
3D model (JSmol)
  • anhydrous: InChI=1S/12O.3Re.Sc/q;;;;;;;;;3*-1;;;;+3
    Key: DQDFVDYBLKBMNM-UHFFFAOYSA-N
  • trihydrate: InChI=1S/3H2O.12O.3Re.Sc/h3*1H2;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;3*-1;;;;+3
    Key: OSEDDTYZDXOQRN-UHFFFAOYSA-N
  • anhydrous: [Sc+3].O=[Re](=O)(=O)[O-].O=[Re](=O)(=O)[O-].O=[Re](=O)(=O)[O-]
  • trihydrate: [Sc+3].O=[Re](=O)(=O)[O-].O=[Re](=O)(=O)[O-].O=[Re](=O)(=O)[O-].O.O.O
Properties
Sc(ReO4)3
Molar mass 795.577 (anhydrous)
813.593 (monohydrate)
849.625 (trihydrate)
Melting point 735°C[1]
very soluble
Related compounds
Other anions
 Scandium nitrate
Scandium perchlorate
Other cations
 Yttrium perrhenate
Lanthnaum perrhenate
Related compounds
 Rhenium(VII) oxide
Perrhenic acid
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Scandium perrhenate is an inorganic compound, with the chemical formula Sc(ReO4)3. Its thermal stability is lower than that of the corresponding compounds of the yttrium and lanthanum perrhenates.[2][3]

Preparation and properties

Scandium perrhenate can be obtained by reacting perrhenic acid with scandium oxide.[1] From the solution, the trihydrate of scandium perrhenate can be precipitated, which loses water at 50 °C to obtain Sc(ReO4)3·H2O, and obtains the anhydrous form at 140 °C. Scandium oxide and rhenium(VII) oxide are formed at 550 °C.[4]

Scandium perrhenate trihydrate is a crystal in the triclinic crystal system, with space group P1, a=7.333, b=7.985, c=20.825 Å; α=93.35, β=92.20, γ=97.42°.[5]

Scandium perrhenate can crystallize with ammonium perrhenate in water to form NH4Sc(ReO4)4·4H2O.[6]

References

  1. ^ a b Yi, Xianwu; et al. Series of Inorganic Chemistry - Vol 7. Scandium; Rare Earth Elements. Science Press. pp. 57. 3.9.6 Manganates and Rhenates of Scandium. (in Chinese)
  2. ^ Ovchinnikov, K. V.; Nikolaev, E. N.; Semenov, G. A. Mass-spectrometric study of the in vacuo thermal decomposition of scandium, yttrium, and lanthanum perrhenates(in Russian). Zhurnal Obshchei Khimii, 1983. 53 (5): 966-968. ISSN: 0044-460X.
  3. ^ "ВАЛЕНТИНА МИХАЙЛОВНА БЕРЕСТОВИЦКАЯ (1940-2017)". Журнал Общей Химии. 90 (8): 1151–1152. 2020-08-01. doi:10.31857/s0044460x20080016. ISSN 0044-460X. S2CID 242996070.
  4. ^ Komissarova, L. N.; Varfolomeev, M. B.; Ivanov, V. I.; Plyushchev, V. E. Preparation and properties of scandium perrhenates(in Russian). Doklady Akademii Nauk SSSR, 1965. 160 (3): 608-611. ISSN 0002-3264.
  5. ^ Khrustalev, V. N.; Varkholomeev, M. B.; Struchkov, Yu. T. Crystal structure of scandium perrhenate trihydrate(in Russian). Zhurnal Neorganicheskoi Khimii, 1997. 42 (11): 1779-1784. ISSN 0044-457X.
  6. ^ Khrustalev, V. N.; Varfolomeev, M. B.; Shamrai, N. B.; Struchkov, Yu. T. Synthesis and crystal structure of double ammonium indium and ammonium scandium perrhenate tetrahydrates(in Russian). Zhurnal Neorganicheskoi Khimii, 1996. 41 (4): 549-553. ISSN 0044-457X.
Quelle: https://en.wikipedia.org/wiki/Scandium_perrhenate