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Th2Ag is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Th is bonded in a 4-coordinate geometry to four equivalent Ag atoms. All Th–Ag bond lengths are 3.23 Å. Ag is bonded in a 10-coordinate geometry to eight equivalent Th and two equivalent Ag atoms. Both Ag–Ag bond lengths are 2.95 Å.
ThAg2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Th is bonded to twelve equivalent Ag atoms to form a mixture of distorted edge and face-sharing ThAg12 cuboctahedra. All Th–Ag bond lengths are 3.29 Å. Ag is bonded in a 11-coordinate geometry to six equivalent Th and five equivalent Ag atoms. There are three shorter (2.83 Å) and two longer (3.36 Å) Ag–Ag bond lengths.
ThAg3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Th is bonded to twelve equivalent Ag atoms to form a mixture of corner and face-sharing ThAg12 cuboctahedra. There are six shorter (3.20 Å) and six longer (3.29 Å) Th–Ag bond lengths. Ag is bonded in a 4-coordinate geometry to four equivalent Th and six equivalent Ag atoms. All Ag–Ag bond lengths are 2.98 Å.