Scandium bromide

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Scandium(III) bromide
Names
IUPAC name
Tribromoscandium
Other names
Scandium tribromide
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.033.349 Edit this at Wikidata
EC Number
  • 236-699-6
  • InChI=1S/3BrH.Sc/h3*1H;/q;;;+3/p-3
    Key: APPHYFNIXVIIJR-UHFFFAOYSA-K
  • Br[Sc](Br)Br
Properties
ScBr3
Molar mass 284.67 g/mol
Appearance anhydrous powder
Density 3.914 g/cm3
Melting point 904 °C (1,659 °F; 1,177 K)[1][2][3]
soluble
Solubility soluble in ethanol
Thermochemistry
Std enthalpy of
formation
(ΔfH⦵298)
 -2.455 kJ/g
Hazards
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
0
Related compounds
Other anions
 Scandium fluoride
Scandium chloride
Scandium triiodide
Other cations
 Yttrium(III) bromide
Lutetium(III) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Scandium bromide, or ScBr3, is a

water-soluble chemical compound of scandium and bromine
.

Preparation and properties

ScBr3 is produced through the burning of scandium in bromine gas.[4]

2 Sc(s) + 3 Br2(g) → 2 ScBr3(s)

Scandium bromide can also be prepared by reacting excess hydrobromic acid with scandium oxide, and the hexahydrate can be crystallized from the solution. The thermal decomposition of hexahydrate can only yield scandium oxybromide (ScOBr) and scandium oxide.[5] The anhydrous form can be produced by the reaction of bromine, scandium oxide and graphite in nitrogen gas.[6]

Heating reaction between ammonium bromide and scandium oxide or scandium bromide hexahydrate, through (NH4)3ScBr6 intermediate, decomposes to obtain anhydrous scandium bromide.[7]

Uses

Scandium bromide is used for solid state synthesis of unusual clusters such as Sc19Br28Z4, (Z=Mn, Fe, Os or Ru). These clusters are of interest for their structure and magnetic properties.[8]

References

  1. ^ Steinwand, S.J. et al. Inorg. Chem. 36, 6413, (1997)
  2. ^ "Scandium tribromide".
  3. ^ "Scandium Bromide".
  4. ^ "WebElements Periodic Table » Scandium » reactions of elements".
  5. ISSN 1212-6950
    .
  6. ISSN 0020-1669
    .
  7. ISSN 0022-5088
    .
  8. ^ "Scandium(III) bromide | CAS 13465-59-3".
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