NdAg2Ge2 crystallizes in the tetragonal I4/mmm space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent Ag(1) and eight equivalent Ge(1) atoms. Ag(1) is bonded to four equivalent Nd(1), four equivalent Ag(1), and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing AgNd4Ag4Ge4 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1), four equivalent Ag(1), and one Ge(1) atom.
NdAg2Ge2 crystallizes in the tetragonal I4/mmm space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent Ag(1) and eight equivalent Ge(1) atoms. All Nd(1)-Ag(1) bond lengths are 3.50 Å. All Nd(1)-Ge(1) bond lengths are 3.26 Å. Ag(1) is bonded to four equivalent Nd(1), four equivalent Ag(1), and four equivalent Ge(1) atoms to form a mixture of distorted edge, face, and corner-sharing AgNd4Ag4Ge4 cuboctahedra. All Ag(1)-Ag(1) bond lengths are 3.03 Å. All Ag(1)-Ge(1) bond lengths are 2.65 Å. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1), four equivalent Ag(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.43 Å.