Ca(PdGe)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Ca is bonded in a 8-coordinate geometry to eight equivalent Pd and eight equivalent Ge atoms. All Ca–Pd bond lengths are 3.35 Å. All Ca–Ge bond lengths are 3.34 Å. Pd is bonded in a 4-coordinate geometry to four equivalent Ca and four equivalent Ge atoms. All Pd–Ge bond lengths are 2.53 Å. Ge is bonded in a 9-coordinate geometry to four equivalent Ca, four equivalent Pd, and one Ge atom. The Ge–Ge bond length is 2.53 Å.