The material structure described by Ce2(GeO3)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(1) atoms. In the second Ce site, Ce(2) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(5), one O(7), one O(9), two equivalent O(6), and two equivalent O(8) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form GeO6 octahedra that share corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(2)O5 trigonal bipyramids, and edges with two equivalent Ge(1)O6 octahedra. In the second Ge site, Ge(2) is bonded to one O(3), one O(6), one O(8), and two equivalent O(1) atoms to form distorted GeO5 trigonal bipyramids that share corners with two equivalent Ge(1)O6 octahedra and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-56°. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ce(1) and two equivalent Ge(2) atoms. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Ce(1), one Ce(2), and two equivalent Ge(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ce(1), one Ce(2), one Ge(1), and one Ge(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ge(3) atom. In the sixth O site, O(6) is bonded to one Ce(1), two equivalent Ce(2), and one Ge(2) atom to form distorted edge-sharing OCe3Ge tetrahedra. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Ce(1), one Ce(2), one Ge(1), and one Ge(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ce(1), two equivalent Ce(2), and one Ge(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ge(3) atom. is represented by the CIF card [CIF]
data_Ce2(GeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.772
_cell_length_b   7.768
_cell_length_c   8.795
_cell_angle_alpha   107.338
_cell_angle_beta   108.489
_cell_angle_gamma   91.488
_symmetry_Int_Tables_number   1
_cell_volume   353.812
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.868  0.803  0.782  1.0
  Ce  Ce1  1  0.132  0.197  0.218  1.0
  Ce  Ce2  1  0.190  0.818  0.418  1.0
  Ce  Ce3  1  0.810  0.182  0.582  1.0
  Ge  Ge4  1  0.763  0.487  0.998  1.0
  Ge  Ge5  1  0.237  0.513  0.002  1.0
  Ge  Ge6  1  0.572  0.926  0.148  1.0
  Ge  Ge7  1  0.428  0.074  0.852  1.0
  Ge  Ge8  1  0.664  0.514  0.342  1.0
  Ge  Ge9  1  0.336  0.486  0.658  1.0
  O  O10  1  0.712  0.007  0.001  1.0
  O  O11  1  0.288  0.993  0.999  1.0
  O  O12  1  0.010  0.677  0.044  1.0
  O  O13  1  0.990  0.323  0.956  1.0
  O  O14  1  0.532  0.673  0.046  1.0
  O  O15  1  0.468  0.327  0.954  1.0
  O  O16  1  0.874  0.483  0.226  1.0
  O  O17  1  0.126  0.517  0.774  1.0
  O  O18  1  0.602  0.316  0.384  1.0
  O  O19  1  0.398  0.684  0.616  1.0
  O  O20  1  0.881  0.988  0.306  1.0
  O  O21  1  0.119  0.012  0.694  1.0
  O  O22  1  0.352  0.538  0.238  1.0
  O  O23  1  0.648  0.462  0.762  1.0
  O  O24  1  0.581  0.029  0.692  1.0
  O  O25  1  0.419  0.971  0.308  1.0
  O  O26  1  0.826  0.713  0.501  1.0
  O  O27  1  0.174  0.287  0.499  1.0
[/CIF]
.
The material structure described by Ce2(GeO3)3 crystallizes in the triclinic P-1 space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(7), one O(8), one O(9), and two equivalent O(1) atoms. In the second Ce site, Ce(2) is bonded in a 9-coordinate geometry to one O(2), one O(4), one O(5), one O(7), one O(9), two equivalent O(6), and two equivalent O(8) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(4), one O(7), two equivalent O(2), and two equivalent O(3) atoms to form GeO6 octahedra that share corners with two equivalent Ge(3)O4 tetrahedra, corners with two equivalent Ge(2)O5 trigonal bipyramids, and edges with two equivalent Ge(1)O6 octahedra. In the second Ge site, Ge(2) is bonded to one O(3), one O(6), one O(8), and two equivalent O(1) atoms to form distorted GeO5 trigonal bipyramids that share corners with two equivalent Ge(1)O6 octahedra and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 45-56°. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form corner-sharing GeO4 tetrahedra. The corner-sharing octahedral tilt angles are 60°. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Ce(1) and two equivalent Ge(2) atoms. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Ce(1), one Ce(2), and two equivalent Ge(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Ge(2) and two equivalent Ge(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ce(1), one Ce(2), one Ge(1), and one Ge(3) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ge(3) atom. In the sixth O site, O(6) is bonded to one Ce(1), two equivalent Ce(2), and one Ge(2) atom to form distorted edge-sharing OCe3Ge tetrahedra. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Ce(1), one Ce(2), one Ge(1), and one Ge(3) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ce(1), two equivalent Ce(2), and one Ge(2) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Ce(1), one Ce(2), and one Ge(3) atom. is represented by the CIF card [CIF]
data_Ce2(GeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.772
_cell_length_b   7.768
_cell_length_c   8.795
_cell_angle_alpha   107.338
_cell_angle_beta   108.489
_cell_angle_gamma   91.488
_symmetry_Int_Tables_number   1
_cell_volume   353.812
_cell_formula_units_Z   2
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
  Ce  Ce0  1  0.868  0.803  0.782  1.0
  Ce  Ce1  1  0.132  0.197  0.218  1.0
  Ce  Ce2  1  0.190  0.818  0.418  1.0
  Ce  Ce3  1  0.810  0.182  0.582  1.0
  Ge  Ge4  1  0.763  0.487  0.998  1.0
  Ge  Ge5  1  0.237  0.513  0.002  1.0
  Ge  Ge6  1  0.572  0.926  0.148  1.0
  Ge  Ge7  1  0.428  0.074  0.852  1.0
  Ge  Ge8  1  0.664  0.514  0.342  1.0
  Ge  Ge9  1  0.336  0.486  0.658  1.0
  O  O10  1  0.712  0.007  0.001  1.0
  O  O11  1  0.288  0.993  0.999  1.0
  O  O12  1  0.010  0.677  0.044  1.0
  O  O13  1  0.990  0.323  0.956  1.0
  O  O14  1  0.532  0.673  0.046  1.0
  O  O15  1  0.468  0.327  0.954  1.0
  O  O16  1  0.874  0.483  0.226  1.0
  O  O17  1  0.126  0.517  0.774  1.0
  O  O18  1  0.602  0.316  0.384  1.0
  O  O19  1  0.398  0.684  0.616  1.0
  O  O20  1  0.881  0.988  0.306  1.0
  O  O21  1  0.119  0.012  0.694  1.0
  O  O22  1  0.352  0.538  0.238  1.0
  O  O23  1  0.648  0.462  0.762  1.0
  O  O24  1  0.581  0.029  0.692  1.0
  O  O25  1  0.419  0.971  0.308  1.0
  O  O26  1  0.826  0.713  0.501  1.0
  O  O27  1  0.174  0.287  0.499  1.0
[/CIF]
.