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AgIn2 is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Ag is bonded in a 10-coordinate geometry to two equivalent Ag and eight equivalent In atoms. Both Ag–Ag bond lengths are 2.93 Å. All Ag–In bond lengths are 3.00 Å. In is bonded in a 5-coordinate geometry to four equivalent Ag and one In atom. The In–In bond length is 3.05 Å.
AgIn2 crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Ag is bonded to two equivalent Ag and four equivalent In atoms to form corner-sharing AgIn4Ag2 octahedra. The corner-sharing octahedra tilt angles range from 0–44°. Both Ag–Ag bond lengths are 2.75 Å. All Ag–In bond lengths are 2.86 Å. In is bonded in a 2-coordinate geometry to two equivalent Ag atoms.
EuAg4In8 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Eu is bonded in a 12-coordinate geometry to eight equivalent Ag and twelve In atoms. All Eu–Ag bond lengths are 4.07 Å. There are four shorter (3.69 Å) and eight longer (3.84 Å) Eu–In bond lengths. Ag is bonded in a 12-coordinate geometry to two equivalent Eu, two equivalent Ag, and eight In atoms. Both Ag–Ag bond lengths are 3.11 Å. There are four shorter (3.11 Å) and four longer (3.25 Å) Ag–In bond lengths. There are two inequivalent In sites. In the first In site, In is bonded in a 10-coordinate geometry to one Eu, four equivalent Ag, and five In atoms. There are a spread of In–In bond distances ranging from 3.25–3.47 Å. In the second In site, In is bonded in a 12-coordinate geometry to two equivalent Eu, four equivalent Ag, and six In atoms. Both In–In bond lengths are 3.19 Å.