Li ₃ <i>Tr</i> As ₂ ( <i>Tr</i> =Al, Ga, In) – Derivatives of the antifluorite type structure, conductivities and electronic structures

Li3AlAs2, Li3GaAs2 and Li3InAs2 were obtained from the elements via high temperature synthesis. Li3AlAs2 crystallize in a distorted 2 ⋅ 1 superstructure of antifluorite structure type. The orthorhombic crystal is isotypic to Li3AlP2 Li3GaP2, space group Cmce (No. 64) showing layers condensed TrAs4-tetrahedra (Tr=Al, Ga). crystallizes Li3InP2 4 type superstructure. tetragonal, I41/acd 142), 3D-network In4As10-supertetrahedra. Structural characterization by powder X-ray diffraction, thermal analysis, conductivity measurements band calculations show ion for electronic charge transport Li3GaAs2.