Materials Data on AlInSb2 by Materials Project
InAlSb2 is Enargite-like structured and crystallizes in the trigonal R3m space group. The structure is three-dimensional. In3+ is bonded to four Sb3- atoms to form InSb4 tetrahedra that share corners with six equivalent InSb4 tetrahedra and corners with six equivalent AlSb4 tetrahedra. There are three shorter (2.82 Å) and one longer (2.87 Å) In–Sb bond lengths. Al3+ is bonded to four Sb3- atoms to form AlSb4 tetrahedra that share corners with six equivalent InSb4 tetrahedra and corners with six equivalent AlSb4 tetrahedra. There are one shorter (2.68 Å) and three longer (2.75 Å) Al–Sb bond lengths. There are two inequivalent Sb3- sites. In the first Sb3- site, Sb3- is bonded to three equivalent In3+ and one Al3+ atom to form corner-sharing SbAlIn3 tetrahedra. In the second Sb3- site, Sb3- is bonded to one In3+ and three equivalent Al3+ atoms to form corner-sharing SbAl3In tetrahedra.