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Scandium perrhenate

Names
IUPAC name Scandium perrhenate(VI)
Other names Scandium(III) perrhenate Scandium(III) perrhenate(VI)
Identifiers
CAS Number	anhydrous: 86498-49-9 trihydrate: 200715-49-7
3D model (JSmol)	anhydrous: Interactive image trihydrate: Interactive image
InChI anhydrous: InChI=1S/12O.3Re.Sc/q;;;;;;;;;3*-1;;;;+3Key: DQDFVDYBLKBMNM-UHFFFAOYSA-N trihydrate: InChI=1S/3H2O.12O.3Re.Sc/h3*1H2;;;;;;;;;;;;;;;;/q;;;;;;;;;;;;3*-1;;;;+3Key: OSEDDTYZDXOQRN-UHFFFAOYSA-N
SMILES anhydrous: .O=(=O)(=O).O=(=O)(=O).O=(=O)(=O) trihydrate: .O=(=O)(=O).O=(=O)(=O).O=(=O)(=O).O.O.O
Properties
Chemical formula	Sc(ReO4)3
Molar mass	795.577 (anhydrous) 813.593 (monohydrate) 849.625 (trihydrate)
Melting point	735°C
Solubility in water	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 , 100 kPa). Infobox references

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.

Preparation and properties

Scandium perrhenate can be obtained by reacting perrhenic acid with scandium oxide. 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.

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°.

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

References

1. ^ 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.

• Perrhenates
• Scandium compounds