Scandium perrhenate

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Scandium perrhenate
Scandium perrhenate.png
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]

Related Research Articles

<span class="mw-page-title-main">Scandium oxide</span> Chemical compound

Scandium(III) oxide or scandia is a inorganic compound with formula Sc2O3. It is one of several oxides of rare earth elements with a high melting point. It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).

<span class="mw-page-title-main">Scandium fluoride</span> Chemical compound

Scandium(III) fluoride, ScF3, is an ionic compound. This salt is slightly soluble in water but dissolves in the presence of excess fluoride to form the ScF63− anion.

<span class="mw-page-title-main">Scandium triiodide</span> Chemical compound

Scandium triiodide, also known as scandium iodide, is an inorganic compound with the formula ScI3 and is classified as a lanthanide iodide. This salt is a yellowish powder. It is used in metal halide lamps together with similar compounds, such as caesium iodide, because of their ability to maximize emission of UV and to prolong bulb life. The maximized UV emission can be tuned to a range that can initiate photopolymerizations.

Yttrium(III) sulfate is an inorganic compound with the formula Y2(SO4)3. The most common form is the anhydrate and octahydrate.

<span class="mw-page-title-main">Pyrosilicate</span> Chemical compound

A pyrosilicate is a type of chemical compound; either an ionic compound that contains the pyrosilicate anionSi
2O6−
7, or an organic compound with the hexavalent ≡O
3Si-O-SiO
3≡ group. The anion is also called disilicate or diorthosilicate.

<span class="mw-page-title-main">Europium dichloride</span> Chemical compound

Europium dichloride is an inorganic compound with a chemical formula EuCl2. When it is irradiated by ultraviolet light, it has bright blue fluorescence.

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

Lutetium(III) hydroxide is an inorganic compound with the chemical formula Lu(OH)3.

Scandium(III) hydroxide is an inorganic compound with the chemical formula Sc(OH)3, the trivalent hydroxide of scandium. It is an amphoteric compound. It is slightly soluble in water, and its saturated solution (pH = 7.85) contains Sc(OH)3 and a small amount of Sc(OH)2+. The solubility of scandium(III) hydroxide in water is 0.0279 mol/L. It will convert to ScO(OH) after aging, greatly reducing the solubility (0.0008 mol/L). Scandium(III) hydroxide can be produced by reacting scandium salts and alkali hydroxides. In the reaction, different starting ingredients can generate different intermediates such as Sc(OH)1.75Cl1.25, Sc(OH)2NO3 and Sc(OH)2.32(SO4)0.34.

Indium(III) nitrate is a nitrate salt of indium. It reacts with sodium tungstate to form In(OH)WO4, [In(OH)2]2WO4, NaInWO4 or In2(WO4)3 depending on pH.

Rhodium(III) hydroxide is a chemical compound with the formula Rh(OH)3.

Lanthanide trichlorides are a family of inorganic compound with the formula LnCl3, where Ln stands for a lanthanide metal. The trichlorides are standard reagents in applied and academic chemistry of the lanthanides. They exist as anhydrous solids and as hydrates.

<span class="mw-page-title-main">Neodymium tantalate</span> Chemical compound

Neodymium tantalate is an inorganic compound with the chemical formula NdTaO4. It is prepared by reacting neodymium oxide and tantalum pentoxide at 1200 °C. It reacts with a mixture of tantalum pentoxide and chlorine gas at high temperature to obtain Nd2Ta2O7Cl2. It is ammonolyzed at high temperature to obtain oxynitrides of Nd-Ta.

<span class="mw-page-title-main">Neodymium perrhenate</span> Chemical compound

Neodymium perrhenate is an inorganic compound with the chemical formula Nd(ReO4)3, which exists in anhydrous and tetrahydrate. It can be obtained by reacting excess neodymium oxide with 240 g/L perrhenic acid solution. In its solution, NdReO42+ and Nd(ReO4)2+ can be observed with stability constants of 16.5 and 23.6, respectively.

<span class="mw-page-title-main">Neodymium acetylacetonate</span> Chemical compound

Neodymium acetylacetonate is a coordination compound of neodymium and acetylacetone, with the chemical formula Nd(O2C5H7)3(H2O)2, although some sources ignore the aquo ligands. It commonly occurs as a white powder. Its instablility constants (logYn) are 2.89, 4.15 and 5.26 (corresponding to n = 1, 2, 3). Its dihydrate reacts with carbonyl rhenium complex Re(CO)3X(4,4'-bipy) (X=Cl, Br) to obtain Re(CO)3X(4,4'-bipy)Nd(acac)3.

Neodymium molybdate is an inorganic compound, with the chemical formula of Nd2(MoO4)3. It reacts with sodium molybdate at a high temperature to obtain NaNd(MoO4)2. It reacts at roughly 350°C to 700°C with hydrogen sulfide to obtain neodymium sulfide and molybdenum disulfide. At roughly 780K to 870K, it can be reduced by hydrogen to obtain Nd2Mo3O9.

<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">Sodium hexachloroiridate(III)</span> Chemical compound

Sodium hexachloroiridate(III) is an inorganic compound with the chemical formula Na3IrCl6.

Erbium compounds are compounds containing the element erbium (Er). These compounds are usually dominated by erbium in the +3 oxidation state, although the +2, +1 and 0 oxidation states have also been reported.

<span class="mw-page-title-main">Gallium perrhenate</span> Chemical compound

Gallium perrhenate is an inorganic compound with the chemical formula of Ga(ReO4)3. It exists in the anhydrous and hydrate forms.

<span class="mw-page-title-main">Gadolinium perrhenate</span> Chemical compound

Gadolinium perrhenate is an inorganic compound, with the chemical formula of Gd(ReO4)3. It can be obtained by dissolving an excess of gadolinium oxide in a perrhenic acid solution (240 g/L) in the presence of hydrogen peroxide, from which the hydrates are precipitated. Its tetrahydrate loses water by heating to obtain the anhydrous form, which then decomposes at high temperatures to generate gadolinium oxide and rhenium heptoxide.

References

  1. 1 2 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.
  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.
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