Aluminium diboride

Aluminium diboride
IUPAC name aluminium diboride
Other names aluminium boride aluminum diboride
Identifiers
CAS number	12041-50-8
ChemSpider	21171253 Y
EC number	234-923-7
Jmol-3D images	Image 1
SMILES B1=B[Al]1
InChI InChI=1S/Al.B2/c;1-2/q-2;+2 Y Key: XGNZNBRDPPLKTC-UHFFFAOYSA-N Y InChI=1/Al.B2/c;1-2/q-2;+2/rAlB2/c1-2-3-1 Key: XGNZNBRDPPLKTC-DOGMWQOPAK
Properties
Molecular formula	AlB2
Molar mass	48.604 g/mol
Appearance	Copper-red solid
Density	3.19 g/cm³
Melting point	1655 °C, 1928 K, 3011 °F
Solubility in water	Insoluble in water
Structure
Crystal structure	Hexagonal, hP3
Space group	P6/mmm, No. 191
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Aluminium diboride (AlB₂) is a chemical compound made from the metal aluminium and the non-metal boron. It is one of two compounds of aluminium and boron, the other being AlB₁₂ that are both commonly referred to as aluminium boride.

Structurally the B atoms form graphite like sheets with Al atoms between them, and this is very similar to the structure of magnesium diboride. Single crystals of AlB₂ exhibit metallic conductivity along the axis parallel to the basal hexagonal plane.^[1]

Aluminium boride is considered a hazardous substance as it reacts with acids and hydrogen gas to produce toxic gases. For example, it reacts with hydrochloric acid to release borane and aluminium chloride.

See also

boride

External links

• "Boron";

References

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