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LaAg is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. La is bonded in a body-centered cubic geometry to eight equivalent Ag atoms. All La–Ag bond lengths are 3.33 Å. Ag is bonded in a body-centered cubic geometry to eight equivalent La atoms.
La3Ag crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. La is bonded in a 4-coordinate geometry to four equivalent Ag atoms. There are two shorter (3.35 Å) and two longer (3.63 Å) La–Ag bond lengths. Ag is bonded to twelve equivalent La atoms to form a mixture of corner and face-sharing AgLa12 cuboctahedra.
LaAg2 crystallizes in the orthorhombic Imma space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to twelve equivalent Ag atoms. There are a spread of La–Ag bond distances ranging from 3.30–3.46 Å. Ag is bonded in a 10-coordinate geometry to six equivalent La and four equivalent Ag atoms. There are a spread of Ag–Ag bond distances ranging from 2.81–3.02 Å.