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AgI2 crystallizes in the tetragonal P-4m2 space group. The structure is two-dimensional and consists of one AgI2 sheet oriented in the (0, 0, 1) direction. Ag2+ is bonded to four equivalent I1- atoms to form corner-sharing AgI4 tetrahedra. All Ag–I bond lengths are 2.78 Å. I1- is bonded in a water-like geometry to two equivalent Ag2+ atoms.
Ag2CdI4 crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Ag1+ is bonded to four equivalent I1- atoms to form AgI4 tetrahedra that share corners with four equivalent AgI4 tetrahedra and corners with four equivalent CdI4 tetrahedra. All Ag–I bond lengths are 2.88 Å. Cd2+ is bonded to four equivalent I1- atoms to form CdI4 tetrahedra that share corners with eight equivalent AgI4 tetrahedra. All Cd–I bond lengths are 2.86 Å. I1- is bonded in a trigonal non-coplanar geometry to two equivalent Ag1+ and one Cd2+ atom.