12004-32-9

Basic information

• Product Name: aluminium, compound with lanthanum (2:1)
• Synonyms: Aluminum, compd. with lanthanum (2:1); Lanthanum aluminide; Aluminium, compound with lanthanum (2:1); aluminum - lanthanum (2:1)
• CAS NO: 12004-32-9
• Molecular Formula: Al₂La
• Molecular Weight: 192.8685
• EINECS: 234-453-2
• Mol File: 12004-32-9.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: aluminium, compound with lanthanum (2:1)(CAS DataBase Reference)
• NIST Chemistry Reference: aluminium, compound with lanthanum (2:1)(12004-32-9)
• EPA Substance Registry System: aluminium, compound with lanthanum (2:1)(12004-32-9)

Safety Data

• Hazardous Substances Data: 12004-32-9(Hazardous Substances Data)

Upstream product

• 7429-90-5 aluminium 
• 7439-91-0 lanthanum 

Relevant articles and documents

Preparation of single crystals of LaAl and X-ray structure determination

Single crystals of the compound LaAl have been prepared by the reaction of a mixture of lanthanum and aluminum under nitrogen at 950 °C. Previously reported crystal structure data determined by X-ray powder diffraction are now confirmed by an X-ray single crystal structure analysis on LaAl: space group Cmcm, Z = 8, a = 9.455(1) angstroms, b = 7.753(1) angstroms, c = 5.791 (1) angstroms, R1/wR2 = 2.4/5.6, N(F2≥2σ(I2)) = 685, N(var.) = 16. The structure of LaAl contains zig-zag chains formed by two crystallographically independent Al atoms with alternating angles Al-Al-Al of 64° and 180°. The chains are connected via lanthanum atoms.

Crystal structure of the La5Al4 compound

The crystal structure of the La5Al4 compound, probably stabilized by some metallic admixtures, has been studied by X-ray powder diffraction. It was shown that La5Al 4 crystallizes in a new structure type (hexagonal symmetry, a = 9.1628(7) ?, c = 11.2309(7) ?).