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PrGe3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pr is bonded to twelve equivalent Ge atoms to form a mixture of face and corner-sharing PrGe12 cuboctahedra. All Pr–Ge bond lengths are 3.13 Å. Ge is bonded in a square co-planar geometry to four equivalent Pr atoms.
LiPr2Ge6 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Li is bonded in a body-centered cubic geometry to eight Ge atoms. There are four shorter (2.46 Å) and four longer (2.53 Å) Li–Ge bond lengths. Pr is bonded in a 10-coordinate geometry to ten Ge atoms. There are a spread of Pr–Ge bond distances ranging from 3.08–3.39 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to six equivalent Pr and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.63 Å. In the second Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Li and two equivalent Pr atoms. In the third Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Li and two equivalent Pr atoms.