The crystal structure described by Ce4Ge7 crystallizes in the orthorhombic C222_1 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one Ge(1), two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. In the second Ce site, Ce(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. In the third Ce site, Ce(3) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(3), four equivalent Ce(1), one Ge(1), one Ge(3), and one Ge(4) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(3), four equivalent Ce(1), one Ge(2), one Ge(3), and one Ge(4) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Ge(2), one Ge(3), and one Ge(4) atom. is represented by the CIF card [CIF]
data_Ce4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.664
_cell_length_b   7.664
_cell_length_c   12.095
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.589
_symmetry_Int_Tables_number   1
_cell_volume   514.562
_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  0.997  0.486  0.381  1.0
  Ce  Ce1  1  0.003  0.514  0.881  1.0
  Ce  Ce2  1  0.514  0.003  0.119  1.0
  Ce  Ce3  1  0.486  0.997  0.619  1.0
  Ce  Ce4  1  0.496  0.504  0.250  1.0
  Ce  Ce5  1  0.504  0.496  0.750  1.0
  Ce  Ce6  1  0.004  0.004  0.000  1.0
  Ce  Ce7  1  0.996  0.996  0.500  1.0
  Ge  Ge8  1  0.934  0.066  0.250  1.0
  Ge  Ge9  1  0.066  0.934  0.750  1.0
  Ge  Ge10  1  0.071  0.416  0.128  1.0
  Ge  Ge11  1  0.929  0.584  0.628  1.0
  Ge  Ge12  1  0.584  0.929  0.372  1.0
  Ge  Ge13  1  0.416  0.071  0.872  1.0
  Ge  Ge14  1  0.971  0.669  0.161  1.0
  Ge  Ge15  1  0.029  0.331  0.661  1.0
  Ge  Ge16  1  0.331  0.029  0.339  1.0
  Ge  Ge17  1  0.669  0.971  0.839  1.0
  Ge  Ge18  1  0.598  0.424  0.011  1.0
  Ge  Ge19  1  0.402  0.576  0.511  1.0
  Ge  Ge20  1  0.576  0.402  0.489  1.0
  Ge  Ge21  1  0.424  0.598  0.989  1.0
[/CIF]
.
The crystal structure described by Ce4Ge7 crystallizes in the orthorhombic C222_1 space group. There are three inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to one Ge(1), two equivalent Ge(4), four equivalent Ge(2), and four equivalent Ge(3) atoms. In the second Ce site, Ce(2) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. In the third Ce site, Ce(3) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(2), two equivalent Ge(3), and four equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), and two equivalent Ge(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(3), four equivalent Ce(1), one Ge(1), one Ge(3), and one Ge(4) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(3), four equivalent Ce(1), one Ge(2), one Ge(3), and one Ge(4) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ce(3), one Ge(2), one Ge(3), and one Ge(4) atom. is represented by the CIF card [CIF]
data_Ce4Ge7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.664
_cell_length_b   7.664
_cell_length_c   12.095
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.589
_symmetry_Int_Tables_number   1
_cell_volume   514.562
_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  0.997  0.486  0.381  1.0
  Ce  Ce1  1  0.003  0.514  0.881  1.0
  Ce  Ce2  1  0.514  0.003  0.119  1.0
  Ce  Ce3  1  0.486  0.997  0.619  1.0
  Ce  Ce4  1  0.496  0.504  0.250  1.0
  Ce  Ce5  1  0.504  0.496  0.750  1.0
  Ce  Ce6  1  0.004  0.004  0.000  1.0
  Ce  Ce7  1  0.996  0.996  0.500  1.0
  Ge  Ge8  1  0.934  0.066  0.250  1.0
  Ge  Ge9  1  0.066  0.934  0.750  1.0
  Ge  Ge10  1  0.071  0.416  0.128  1.0
  Ge  Ge11  1  0.929  0.584  0.628  1.0
  Ge  Ge12  1  0.584  0.929  0.372  1.0
  Ge  Ge13  1  0.416  0.071  0.872  1.0
  Ge  Ge14  1  0.971  0.669  0.161  1.0
  Ge  Ge15  1  0.029  0.331  0.661  1.0
  Ge  Ge16  1  0.331  0.029  0.339  1.0
  Ge  Ge17  1  0.669  0.971  0.839  1.0
  Ge  Ge18  1  0.598  0.424  0.011  1.0
  Ge  Ge19  1  0.402  0.576  0.511  1.0
  Ge  Ge20  1  0.576  0.402  0.489  1.0
  Ge  Ge21  1  0.424  0.598  0.989  1.0
[/CIF]
.