Yttrium(III) bromide

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Yttrium(III) bromide[1]
IUPAC name
Yttrium(III) bromide
Other names
Yttrium tribromide
3D model (JSmol)
ECHA InfoCard 100.033.375 Edit this at Wikidata
EC Number
  • 236-728-2
  • InChI=1S/3BrH.Y/h3*1H;/q;;;+3/p-3 checkY
  • InChI=1/3BrH.Y/h3*1H;/q;;;+3/p-3
  • Br[Y](Br)Br
Molar mass 328.618 g/mol
Appearance colorless hygroscopic crystals
Melting point 904 °C (1,659 °F; 1,177 K)
83.3 g/100 mL at 30°C
Trigonal, hR24
R-3, No. 148
GHS labelling:
GHS07: Exclamation mark
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 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
Related compounds
Other anions
Yttrium(III) fluoride
Yttrium(III) chloride
Yttrium(III) iodide
Other cations
Scandium bromide
Lutetium(III) bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)

Yttrium(III) bromide is an inorganic compound with the chemical formula YBr3. It is a white solid. Anhydrous yttrium(III) bromide can be produced by reacting yttrium oxide or yttrium(III) bromide hydrate and ammonium bromide. The reaction proceeds via the intermediate (NH4)3YBr6.[3] Another method is to react yttrium carbide (YC2) and elemental bromine.[4] Yttrium(III) bromide can be reduced by yttrium metal to YBr or Y2Br3.[5] It can react with osmium to produce Y4Br4Os.[6]


  1. ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, Florida: CRC Press, pp. 4–94, ISBN 0-8493-0594-2
  2. ^ "Yttrium(III) bromide anhydrous, powder, 99.9% | Sigma-Aldrich".
  3. ^ Gerd Meyer, Siegfried Dötsch, Thomas Staffel (1987). "The ammonium-bromide route to anhydrous rare earth bromides MBr3". Journal of the Less Common Metals. 127: 155–160. doi:10.1016/0022-5088(87)90372-9.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  4. ^ Mussler, R. E.; Campbell, T. T.; Block, F. E.; Robidart, G. B. Metallothermic reduction of yttrium halides. Bureau of Mines Report of Investigations, 1963. 6259. pp 21.
  5. ^ H. Mattausch, J. B. Hendricks, R. Eger, J. D. Corbett, A. Simon (1980). "Reduced halides of yttrium with strong metal-metal bonding: yttrium monochloride, monobromide, sesquichloride, and sesquibromide". Inorganic Chemistry. 19 (7): 2128–2132. doi:10.1021/ic50209a057. ISSN 0020-1669.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  6. ^ Peter K. Dorhout, John D. Corbett (1992). "A novel structure type in reduced rare-earth metal halides. One-dimensional confacial chains based on centered square antiprismatic metal units: Y4Br4Os and Er4Br4Os". Journal of the American Chemical Society. 114 (5): 1697–1701. doi:10.1021/ja00031a024. ISSN 0002-7863.