Aluminium dodecaboride

Aluminium dodecaboride
Names
	IUPAC name Aluminium dodecaboride
	Other names AlB12
Identifiers
CAS Number	12041-54-2 ;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.031.737
EC Number	234-924-2;
PubChem CID	6336895;
	InChI InChI=1S/Al.12B Key: JXOOCQBAIRXOGG-UHFFFAOYSA-N;
	SMILES [B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[Al];
Properties
Chemical formula	AlB12
Molar mass	156.714 g/mol
Appearance	Yellow to black solid
Density	2.55 g/cm3
Melting point	2,070 °C (3,760 °F; 2,340 K)
Solubility in water	insoluble
Solubility	soluble in hot nitric acid (decomposes),; soluble in nitric acid (decomposes),; soluble in sulfuric acid (decomposes)
Structure
Crystal 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). verify (what is ?) Infobox references

Aluminium dodecaboride (AlB₁₂) is a superhard chemical compound with 17% aluminium content by weight.

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

Properties

Names
IUPAC name Aluminium dodecaboride
Other names AlB₁₂
Identifiers
CAS Number	12041-54-2^Y
3D model (JSmol)	Interactive image
ECHA InfoCard	100.031.737
EC Number	234-924-2
PubChem CID	6336895
InChI InChI=1S/Al.12B Key: JXOOCQBAIRXOGG-UHFFFAOYSA-N
SMILES [B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[B].[Al]
Properties
Chemical formula	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]
Solubility in water	insoluble
Solubility	soluble in hot nitric acid (decomposes),^[2] soluble in nitric acid (decomposes),^[3] soluble in sulfuric acid (decomposes)^[3]
Structure
Crystal 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). N verify (what is ^YN ?) Infobox references