The structure described by Nd2GeO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(4), and three equivalent O(2) atoms. In the second Nd site, Nd(2) is bonded to one O(1), three equivalent O(3), and three equivalent O(5) atoms to form distorted NdO7 hexagonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra, edges with six equivalent Nd(2)O7 hexagonal pyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Nd(2)O7 hexagonal pyramids and  an edgeedge with one Nd(2)O7 hexagonal pyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Nd(2), two equivalent Nd(1), and one Ge(1) atom to form distorted ONd3Ge tetrahedra that share  a cornercorner with one O(5)Nd4 tetrahedra, corners with two equivalent O(1)Nd3Ge tetrahedra, corners with two equivalent O(3)Nd3Ge trigonal pyramids, edges with two equivalent O(5)Nd4 tetrahedra, and  an edgeedge with one O(3)Nd3Ge trigonal pyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Nd(1) and one Ge(1) atom. In the third O site, O(3) is bonded to three equivalent Nd(2) and one Ge(1) atom to form distorted ONd3Ge trigonal pyramids that share corners with two equivalent O(1)Nd3Ge tetrahedra, corners with five equivalent O(5)Nd4 tetrahedra, corners with four equivalent O(3)Nd3Ge trigonal pyramids,  an edgeedge with one O(1)Nd3Ge tetrahedra, edges with two equivalent O(5)Nd4 tetrahedra, and  an edgeedge with one O(3)Nd3Ge trigonal pyramid. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nd(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one Nd(1) and three equivalent Nd(2) atoms to form ONd4 tetrahedra that share  a cornercorner with one O(1)Nd3Ge tetrahedra, corners with four equivalent O(5)Nd4 tetrahedra, corners with five equivalent O(3)Nd3Ge trigonal pyramids,  an edgeedge with one O(5)Nd4 tetrahedra, edges with two equivalent O(1)Nd3Ge tetrahedra, and edges with two equivalent O(3)Nd3Ge trigonal pyramids. is represented by the CIF card [CIF]
data_Nd2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   7.009
_cell_length_c   9.493
_cell_angle_alpha   73.696
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   463.884
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Nd  Nd0  1  0.637  0.064  0.125  1.0
  Nd  Nd1  1  0.137  0.436  0.875  1.0
  Nd  Nd2  1  0.363  0.936  0.875  1.0
  Nd  Nd3  1  0.863  0.564  0.125  1.0
  Nd  Nd4  1  0.127  0.267  0.525  1.0
  Nd  Nd5  1  0.627  0.233  0.475  1.0
  Nd  Nd6  1  0.873  0.733  0.475  1.0
  Nd  Nd7  1  0.373  0.767  0.525  1.0
  Ge  Ge8  1  0.089  0.031  0.200  1.0
  Ge  Ge9  1  0.589  0.469  0.800  1.0
  Ge  Ge10  1  0.911  0.969  0.800  1.0
  Ge  Ge11  1  0.411  0.531  0.200  1.0
  O  O12  1  0.918  0.843  0.212  1.0
  O  O13  1  0.418  0.657  0.788  1.0
  O  O14  1  0.082  0.157  0.788  1.0
  O  O15  1  0.582  0.343  0.212  1.0
  O  O16  1  0.948  0.233  0.113  1.0
  O  O17  1  0.448  0.267  0.887  1.0
  O  O18  1  0.052  0.767  0.887  1.0
  O  O19  1  0.552  0.733  0.113  1.0
  O  O20  1  0.133  0.993  0.390  1.0
  O  O21  1  0.633  0.507  0.610  1.0
  O  O22  1  0.867  0.007  0.610  1.0
  O  O23  1  0.367  0.493  0.390  1.0
  O  O24  1  0.288  0.011  0.107  1.0
  O  O25  1  0.788  0.489  0.893  1.0
  O  O26  1  0.712  0.989  0.893  1.0
  O  O27  1  0.212  0.511  0.107  1.0
  O  O28  1  0.883  0.442  0.386  1.0
  O  O29  1  0.383  0.058  0.614  1.0
  O  O30  1  0.117  0.558  0.614  1.0
  O  O31  1  0.617  0.942  0.386  1.0
[/CIF]
.
The structure described by Nd2GeO5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Nd sites. In the first Nd site, Nd(1) is bonded in a 8-coordinate geometry to one O(5), two equivalent O(1), two equivalent O(4), and three equivalent O(2) atoms. In the second Nd site, Nd(2) is bonded to one O(1), three equivalent O(3), and three equivalent O(5) atoms to form distorted NdO7 hexagonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra, edges with six equivalent Nd(2)O7 hexagonal pyramids, and  an edgeedge with one Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with two equivalent Nd(2)O7 hexagonal pyramids and  an edgeedge with one Nd(2)O7 hexagonal pyramid. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Nd(2), two equivalent Nd(1), and one Ge(1) atom to form distorted ONd3Ge tetrahedra that share  a cornercorner with one O(5)Nd4 tetrahedra, corners with two equivalent O(1)Nd3Ge tetrahedra, corners with two equivalent O(3)Nd3Ge trigonal pyramids, edges with two equivalent O(5)Nd4 tetrahedra, and  an edgeedge with one O(3)Nd3Ge trigonal pyramid. In the second O site, O(2) is bonded in a 4-coordinate geometry to three equivalent Nd(1) and one Ge(1) atom. In the third O site, O(3) is bonded to three equivalent Nd(2) and one Ge(1) atom to form distorted ONd3Ge trigonal pyramids that share corners with two equivalent O(1)Nd3Ge tetrahedra, corners with five equivalent O(5)Nd4 tetrahedra, corners with four equivalent O(3)Nd3Ge trigonal pyramids,  an edgeedge with one O(1)Nd3Ge tetrahedra, edges with two equivalent O(5)Nd4 tetrahedra, and  an edgeedge with one O(3)Nd3Ge trigonal pyramid. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Nd(1) and one Ge(1) atom. In the fifth O site, O(5) is bonded to one Nd(1) and three equivalent Nd(2) atoms to form ONd4 tetrahedra that share  a cornercorner with one O(1)Nd3Ge tetrahedra, corners with four equivalent O(5)Nd4 tetrahedra, corners with five equivalent O(3)Nd3Ge trigonal pyramids,  an edgeedge with one O(5)Nd4 tetrahedra, edges with two equivalent O(1)Nd3Ge tetrahedra, and edges with two equivalent O(3)Nd3Ge trigonal pyramids. is represented by the CIF card [CIF]
data_Nd2GeO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.265
_cell_length_b   7.009
_cell_length_c   9.493
_cell_angle_alpha   73.696
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   463.884
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Nd  Nd0  1  0.637  0.064  0.125  1.0
  Nd  Nd1  1  0.137  0.436  0.875  1.0
  Nd  Nd2  1  0.363  0.936  0.875  1.0
  Nd  Nd3  1  0.863  0.564  0.125  1.0
  Nd  Nd4  1  0.127  0.267  0.525  1.0
  Nd  Nd5  1  0.627  0.233  0.475  1.0
  Nd  Nd6  1  0.873  0.733  0.475  1.0
  Nd  Nd7  1  0.373  0.767  0.525  1.0
  Ge  Ge8  1  0.089  0.031  0.200  1.0
  Ge  Ge9  1  0.589  0.469  0.800  1.0
  Ge  Ge10  1  0.911  0.969  0.800  1.0
  Ge  Ge11  1  0.411  0.531  0.200  1.0
  O  O12  1  0.918  0.843  0.212  1.0
  O  O13  1  0.418  0.657  0.788  1.0
  O  O14  1  0.082  0.157  0.788  1.0
  O  O15  1  0.582  0.343  0.212  1.0
  O  O16  1  0.948  0.233  0.113  1.0
  O  O17  1  0.448  0.267  0.887  1.0
  O  O18  1  0.052  0.767  0.887  1.0
  O  O19  1  0.552  0.733  0.113  1.0
  O  O20  1  0.133  0.993  0.390  1.0
  O  O21  1  0.633  0.507  0.610  1.0
  O  O22  1  0.867  0.007  0.610  1.0
  O  O23  1  0.367  0.493  0.390  1.0
  O  O24  1  0.288  0.011  0.107  1.0
  O  O25  1  0.788  0.489  0.893  1.0
  O  O26  1  0.712  0.989  0.893  1.0
  O  O27  1  0.212  0.511  0.107  1.0
  O  O28  1  0.883  0.442  0.386  1.0
  O  O29  1  0.383  0.058  0.614  1.0
  O  O30  1  0.117  0.558  0.614  1.0
  O  O31  1  0.617  0.942  0.386  1.0
[/CIF]
.