NdMn2Ge2 crystallizes in the tetragonal I4/mmm space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent Mn(1) and eight equivalent Ge(1) atoms. Mn(1) is bonded to four equivalent Nd(1) and four equivalent Ge(1) atoms to form a mixture of edge, face, and corner-sharing MnNd4Ge4 tetrahedra. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1), four equivalent Mn(1), and one Ge(1) atom.
NdMn2Ge2 crystallizes in the tetragonal I4/mmm space group. Nd(1) is bonded in a 16-coordinate geometry to eight equivalent Mn(1) and eight equivalent Ge(1) atoms. All Nd(1)-Mn(1) bond lengths are 3.48 Å. All Nd(1)-Ge(1) bond lengths are 3.22 Å. Mn(1) is bonded to four equivalent Nd(1) and four equivalent Ge(1) atoms to form a mixture of edge, face, and corner-sharing MnNd4Ge4 tetrahedra. All Mn(1)-Ge(1) bond lengths are 2.57 Å. Ge(1) is bonded in a 9-coordinate geometry to four equivalent Nd(1), four equivalent Mn(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.55 Å.