Materials Data on AlIn(AgSe2)2 by Materials Project

Abstract

InAl(AgSe2)2 is Stannite-like structured and crystallizes in the tetragonal I-4 space group. The structure is three-dimensional. there are two inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded to four equivalent Se2- atoms to form AgSe4 tetrahedra that share corners with four equivalent AgSe4 tetrahedra, corners with four equivalent InSe4 tetrahedra, and corners with four equivalent AlSe4 tetrahedra. All Ag–Se bond lengths are 2.69 Å. In the second Ag1+ site, Ag1+ is bonded to four equivalent Se2- atoms to form AgSe4 tetrahedra that share corners with four equivalent AgSe4 tetrahedra, corners with four equivalent InSe4 tetrahedra, and corners with four equivalent AlSe4 tetrahedra. All Ag–Se bond lengths are 2.67 Å. In3+ is bonded to four equivalent Se2- atoms to form InSe4 tetrahedra that share corners with four equivalent AlSe4 tetrahedra and corners with eight AgSe4 tetrahedra. All In–Se bond lengths are 2.64 Å. Al3+ is bonded to four equivalent Se2- atoms to form AlSe4 tetrahedra that share corners with four equivalent InSe4 tetrahedra and corners with eight AgSe4 tetrahedra. All Al–Se bond lengths are 2.43 Å. Se2- is bonded to two Ag1+, one In3+, and one Al3+ atom to form corner-sharing SeAlInAg2 tetrahedra.