Aluminium dodecaboride

Aluminium dodecaboride
Names
IUPAC name
Aluminium dodecaboride
Other names
AlB12
Identifiers
3D model (JSmol)
ECHA InfoCard 100.031.737 Edit this at Wikidata
EC Number
  • 234-924-2
  • InChI=1S/Al.12B
    Key: JXOOCQBAIRXOGG-UHFFFAOYSA-N
  • [B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[Al]
Properties
AlB12
Molar mass 156.714 g/mol[1]
Appearance Yellow to black solid[1]
Density 2.55 g/cm3[1]
Melting point 2,070 °C (3,760 °F; 2,340 K)[1]
insoluble
Solubility soluble in hot nitric acid (decomposes),[2]
soluble in nitric acid (decomposes),[3]
soluble in sulfuric acid (decomposes)[3]
Structure
Tetragonal (α-form)
Orthorhombic (β-form)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Aluminium dodecaboride (AlB12) is a superhard chemical compound with 17% aluminium content by weight.

It is the hardest boride of the aluminium-boron system, which also includes AlB10, AlB4, AlB2 and AlB.

  1. ^ a b c d Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.45. ISBN 1-4398-5511-0.
  2. ^ Martienssen, Werner; Warlimont, Hans (2005). Martienssen, Werner; Warlimont, Hans (eds.). Springer Handbook of Condensed Matter and Materials Data. Springer-Verlag. p. 1025. Bibcode:2005shcm.book.....M. ISBN 9783540443766.
  3. ^ a b Rebekoff Reeve, Martin (1991) Method of producing an aluminium boride. EP 0130016 B1