AgInSe2 is Chalcopyrite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Ag(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form AgSe4 tetrahedra that share corners with four equivalent Ag(1)Se4 tetrahedra and corners with eight equivalent In(1)Se4 tetrahedra. In(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form InSe4 tetrahedra that share corners with four equivalent In(1)Se4 tetrahedra and corners with eight equivalent Ag(1)Se4 tetrahedra. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1) and two equivalent In(1) atoms to form corner-sharing SeIn2Ag2 tetrahedra. In the second Se site, Se(2) is bonded to two equivalent Ag(1) and two equivalent In(1) atoms to form corner-sharing SeIn2Ag2 tetrahedra.
AgInSe2 is Chalcopyrite-like structured and crystallizes in the orthorhombic Pna2_1 space group. Ag(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form AgSe4 tetrahedra that share corners with four equivalent Ag(1)Se4 tetrahedra and corners with eight equivalent In(1)Se4 tetrahedra. Both Ag(1)-Se(1) bond lengths are 2.68 Å. There is one shorter (2.68 Å) and one longer (2.73 Å) Ag(1)-Se(2) bond length. In(1) is bonded to two equivalent Se(1) and two equivalent Se(2) atoms to form InSe4 tetrahedra that share corners with four equivalent In(1)Se4 tetrahedra and corners with eight equivalent Ag(1)Se4 tetrahedra. There is one shorter (2.63 Å) and one longer (2.65 Å) In(1)-Se(1) bond length. There is one shorter (2.64 Å) and one longer (2.65 Å) In(1)-Se(2) bond length. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to two equivalent Ag(1) and two equivalent In(1) atoms to form corner-sharing SeIn2Ag2 tetrahedra. In the second Se site, Se(2) is bonded to two equivalent Ag(1) and two equivalent In(1) atoms to form corner-sharing SeIn2Ag2 tetrahedra.