NdCrGeO5 crystallizes in the orthorhombic Pbam space group. Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Ge(1)O5 square pyramids and edges with two equivalent Cr(1)O6 octahedra. Ge(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(4) atoms to form distorted GeO5 square pyramids that share corners with four equivalent Cr(1)O6 octahedra and  an edgeedge with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 47-52°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Nd(1), one Cr(1), and one Ge(1) atom to form distorted ONd2CrGe tetrahedra that share corners with four equivalent O(4)Nd2Ge2 tetrahedra, corners with six equivalent O(1)Nd2CrGe tetrahedra, corners with two equivalent O(3)Nd2Cr2 trigonal pyramids,  an edgeedge with one O(1)Nd2CrGe tetrahedra,  an edgeedge with one O(4)Nd2Ge2 tetrahedra, and edges with two equivalent O(3)Nd2Cr2 trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Nd(1) and two equivalent Cr(1) atoms to form distorted ONd2Cr2 trigonal pyramids that share corners with four equivalent O(1)Nd2CrGe tetrahedra, corners with four equivalent O(4)Nd2Ge2 tetrahedra, corners with two equivalent O(3)Nd2Cr2 trigonal pyramids, edges with four equivalent O(1)Nd2CrGe tetrahedra, and  an edgeedge with one O(3)Nd2Cr2 trigonal pyramid. In the fourth O site, O(4) is bonded to two equivalent Nd(1) and two equivalent Ge(1) atoms to form distorted ONd2Ge2 tetrahedra that share corners with eight equivalent O(1)Nd2CrGe tetrahedra, corners with four equivalent O(3)Nd2Cr2 trigonal pyramids, edges with two equivalent O(1)Nd2CrGe tetrahedra, and edges with two equivalent O(4)Nd2Ge2 tetrahedra.
NdCrGeO5 crystallizes in the orthorhombic Pbam space group. Nd(1) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. There is one shorter (2.37 Å) and one longer (2.45 Å) Nd(1)-O(3) bond length. Both Nd(1)-O(4) bond lengths are 2.53 Å. There are two shorter (2.48 Å) and two longer (2.58 Å) Nd(1)-O(1) bond lengths. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CrO6 octahedra that share corners with four equivalent Ge(1)O5 square pyramids and edges with two equivalent Cr(1)O6 octahedra. Both Cr(1)-O(1) bond lengths are 2.04 Å. Both Cr(1)-O(2) bond lengths are 2.01 Å. Both Cr(1)-O(3) bond lengths are 2.00 Å. Ge(1) is bonded to one O(2), two equivalent O(1), and two equivalent O(4) atoms to form distorted GeO5 square pyramids that share corners with four equivalent Cr(1)O6 octahedra and  an edgeedge with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 47-52°. The Ge(1)-O(2) bond length is 1.78 Å. Both Ge(1)-O(1) bond lengths are 1.87 Å. Both Ge(1)-O(4) bond lengths are 1.94 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Nd(1), one Cr(1), and one Ge(1) atom to form distorted ONd2CrGe tetrahedra that share corners with four equivalent O(4)Nd2Ge2 tetrahedra, corners with six equivalent O(1)Nd2CrGe tetrahedra, corners with two equivalent O(3)Nd2Cr2 trigonal pyramids,  an edgeedge with one O(1)Nd2CrGe tetrahedra,  an edgeedge with one O(4)Nd2Ge2 tetrahedra, and edges with two equivalent O(3)Nd2Cr2 trigonal pyramids. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Cr(1) and one Ge(1) atom. In the third O site, O(3) is bonded to two equivalent Nd(1) and two equivalent Cr(1) atoms to form distorted ONd2Cr2 trigonal pyramids that share corners with four equivalent O(1)Nd2CrGe tetrahedra, corners with four equivalent O(4)Nd2Ge2 tetrahedra, corners with two equivalent O(3)Nd2Cr2 trigonal pyramids, edges with four equivalent O(1)Nd2CrGe tetrahedra, and  an edgeedge with one O(3)Nd2Cr2 trigonal pyramid. In the fourth O site, O(4) is bonded to two equivalent Nd(1) and two equivalent Ge(1) atoms to form distorted ONd2Ge2 tetrahedra that share corners with eight equivalent O(1)Nd2CrGe tetrahedra, corners with four equivalent O(3)Nd2Cr2 trigonal pyramids, edges with two equivalent O(1)Nd2CrGe tetrahedra, and edges with two equivalent O(4)Nd2Ge2 tetrahedra.