Aluminium antimonide

Aluminium antimonide
Identifiers
CAS Number	25152-52-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	82452 ;
ECHA InfoCard	100.042.410
EC Number	246-667-3;
PubChem CID	91307;
UNII	5YY752FD6D ;
CompTox Dashboard (EPA)	DTXSID9067061 ;
	InChI InChI=1S/Al.Sb Key: LVQULNGDVIKLPK-UHFFFAOYSA-N ; InChI=1/Al.Sb/rAlSb/c1-2 Key: LVQULNGDVIKLPK-XFZGNPHIAJ;
	SMILES [SbH+]12[Al-][SbH+]3[Al-][SbH+]([AlH-]14)[AlH-]1[Sb+]5([AlH-]38)[Al-]26[SbH+]2[AlH-]([Sb+]4)[SbH+]1[Al-][SbH+]3[AlH-]2[Sb+][AlH-]([SbH+]6[AlH-]([SbH+])[SbH+]68)[SbH+]([Al-]6)[AlH-]35;
Properties
Chemical formula	AlSb
Molar mass	148.742 g/mol
Appearance	black crystals
Density	4.26 g/cm3
Melting point	1,060 °C (1,940 °F; 1,330 K)
Boiling point	2,467 °C (4,473 °F; 2,740 K)
Solubility in water	insoluble
Band gap	1.58 eV
Refractive index (nD)	3.3
Structure
Crystal structure	Zinc blende
Space group	T2d-F-43m
Coordination geometry	Tetrahedral
Thermochemistry
Std molar; entropy (S⦵298)	65 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	-50.4 kJ/mol
Hazards
NFPA 704 (fire diamond)	0 3 1
Autoignition; temperature	317 °C (603 °F; 590 K)
Safety data sheet (SDS)	MSDS
	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 antimonide (AlSb) is a semiconductor of the group III-V family containing aluminium and antimony. The lattice constant is 0.61 nm. The indirect bandgap is approximately 1.6 eV at 300 K, whereas the direct band gap is 2.22 eV.

Its electron mobility is 200 cm²·V⁻¹·s⁻¹ and hole mobility 400 cm²·V⁻¹·s⁻¹ at 300 K. Its refractive index is 3.3 at a wavelength of 2 μm, and its dielectric constant is 10.9 at microwave frequencies.^[1]

AlSb can be reacted with other III-V materials to produce ternary materials including AlInSb, AlGaSb and AlAsSb.

Aluminium antimonide is rather flammable because of the reducing tendency of the antimonide (Sb³⁻) ion. It burns to produce aluminium oxide and antimony trioxide.

References

^ K Seeger and E Schonherr "Microwave dielectric constant of aluminium antimonide" Semicond. Sci. Technol. 6 (1991) 301 doi:10.1088/0268-1242/6/4/013

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[1] K Seeger and E Schonherr "Microwave dielectric constant of aluminium antimonide" Semicond. Sci. Technol. 6 (1991) 301 doi:10.1088/0268-1242/6/4/013

[1]

See also

References