In4As3Se is Chalcopyrite-like structured and crystallizes in the tetragonal I-42m space group. In(1) is bonded to one As(1), two equivalent As(2), and one Se(1) atom to form corner-sharing InAs3Se tetrahedra. There are two inequivalent As sites. In the first As site, As(1) is bonded to four equivalent In(1) atoms to form AsIn4 tetrahedra that share corners with four equivalent Se(1)In4 tetrahedra and corners with eight equivalent As(2)In4 tetrahedra. In the second As site, As(2) is bonded to four equivalent In(1) atoms to form AsIn4 tetrahedra that share corners with four equivalent As(1)In4 tetrahedra, corners with four equivalent As(2)In4 tetrahedra, and corners with four equivalent Se(1)In4 tetrahedra. Se(1) is bonded to four equivalent In(1) atoms to form SeIn4 tetrahedra that share corners with four equivalent As(1)In4 tetrahedra and corners with eight equivalent As(2)In4 tetrahedra.
In4As3Se is Chalcopyrite-like structured and crystallizes in the tetragonal I-42m space group. In(1) is bonded to one As(1), two equivalent As(2), and one Se(1) atom to form corner-sharing InAs3Se tetrahedra. The In(1)-As(1) bond length is 2.71 Å. Both In(1)-As(2) bond lengths are 2.71 Å. The In(1)-Se(1) bond length is 2.79 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded to four equivalent In(1) atoms to form AsIn4 tetrahedra that share corners with four equivalent Se(1)In4 tetrahedra and corners with eight equivalent As(2)In4 tetrahedra. In the second As site, As(2) is bonded to four equivalent In(1) atoms to form AsIn4 tetrahedra that share corners with four equivalent As(1)In4 tetrahedra, corners with four equivalent As(2)In4 tetrahedra, and corners with four equivalent Se(1)In4 tetrahedra. Se(1) is bonded to four equivalent In(1) atoms to form SeIn4 tetrahedra that share corners with four equivalent As(1)In4 tetrahedra and corners with eight equivalent As(2)In4 tetrahedra.