The material described by Yb2Ge2O7 crystallizes in the cubic Fd-3m space group. Yb(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted YbO8 hexagonal bipyramids that share edges with six equivalent Yb(1)O8 hexagonal bipyramids and edges with six equivalent Ge(1)O6 octahedra. Ge(1) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(1)O6 octahedra and edges with six equivalent Yb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Yb(1) and two equivalent Ge(1) atoms to form distorted OYb2Ge2 tetrahedra that share corners with two equivalent O(2)Yb4 tetrahedra, corners with twelve equivalent O(1)Yb2Ge2 tetrahedra,  an edgeedge with one O(2)Yb4 tetrahedra, and edges with four equivalent O(1)Yb2Ge2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Yb(1) atoms to form OYb4 tetrahedra that share corners with four equivalent O(2)Yb4 tetrahedra, corners with twelve equivalent O(1)Yb2Ge2 tetrahedra, and edges with six equivalent O(1)Yb2Ge2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb2Ge2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.071
_cell_length_b   7.071
_cell_length_c   7.071
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   250.020
_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
  Yb  Yb0  1  0.125  0.125  0.625  1.0
  Yb  Yb1  1  0.125  0.625  0.125  1.0
  Yb  Yb2  1  0.625  0.125  0.125  1.0
  Yb  Yb3  1  0.125  0.125  0.125  1.0
  Ge  Ge4  1  0.625  0.625  0.125  1.0
  Ge  Ge5  1  0.625  0.125  0.625  1.0
  Ge  Ge6  1  0.125  0.625  0.625  1.0
  Ge  Ge7  1  0.625  0.625  0.625  1.0
  O  O8  1  0.550  0.950  0.550  1.0
  O  O9  1  0.300  0.700  0.300  1.0
  O  O10  1  0.550  0.550  0.950  1.0
  O  O11  1  0.950  0.550  0.550  1.0
  O  O12  1  0.550  0.950  0.950  1.0
  O  O13  1  0.950  0.950  0.550  1.0
  O  O14  1  0.700  0.700  0.300  1.0
  O  O15  1  0.300  0.300  0.700  1.0
  O  O16  1  0.000  0.000  0.000  1.0
  O  O17  1  0.250  0.250  0.250  1.0
  O  O18  1  0.950  0.550  0.950  1.0
  O  O19  1  0.700  0.300  0.300  1.0
  O  O20  1  0.300  0.700  0.700  1.0
  O  O21  1  0.700  0.300  0.700  1.0
[/CIF]
.
The material described by Yb2Ge2O7 crystallizes in the cubic Fd-3m space group. Yb(1) is bonded to two equivalent O(2) and six equivalent O(1) atoms to form distorted YbO8 hexagonal bipyramids that share edges with six equivalent Yb(1)O8 hexagonal bipyramids and edges with six equivalent Ge(1)O6 octahedra. Ge(1) is bonded to six equivalent O(1) atoms to form GeO6 octahedra that share corners with six equivalent Ge(1)O6 octahedra and edges with six equivalent Yb(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 46°. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Yb(1) and two equivalent Ge(1) atoms to form distorted OYb2Ge2 tetrahedra that share corners with two equivalent O(2)Yb4 tetrahedra, corners with twelve equivalent O(1)Yb2Ge2 tetrahedra,  an edgeedge with one O(2)Yb4 tetrahedra, and edges with four equivalent O(1)Yb2Ge2 tetrahedra. In the second O site, O(2) is bonded to four equivalent Yb(1) atoms to form OYb4 tetrahedra that share corners with four equivalent O(2)Yb4 tetrahedra, corners with twelve equivalent O(1)Yb2Ge2 tetrahedra, and edges with six equivalent O(1)Yb2Ge2 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb2Ge2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.071
_cell_length_b   7.071
_cell_length_c   7.071
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   250.020
_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
  Yb  Yb0  1  0.125  0.125  0.625  1.0
  Yb  Yb1  1  0.125  0.625  0.125  1.0
  Yb  Yb2  1  0.625  0.125  0.125  1.0
  Yb  Yb3  1  0.125  0.125  0.125  1.0
  Ge  Ge4  1  0.625  0.625  0.125  1.0
  Ge  Ge5  1  0.625  0.125  0.625  1.0
  Ge  Ge6  1  0.125  0.625  0.625  1.0
  Ge  Ge7  1  0.625  0.625  0.625  1.0
  O  O8  1  0.550  0.950  0.550  1.0
  O  O9  1  0.300  0.700  0.300  1.0
  O  O10  1  0.550  0.550  0.950  1.0
  O  O11  1  0.950  0.550  0.550  1.0
  O  O12  1  0.550  0.950  0.950  1.0
  O  O13  1  0.950  0.950  0.550  1.0
  O  O14  1  0.700  0.700  0.300  1.0
  O  O15  1  0.300  0.300  0.700  1.0
  O  O16  1  0.000  0.000  0.000  1.0
  O  O17  1  0.250  0.250  0.250  1.0
  O  O18  1  0.950  0.550  0.950  1.0
  O  O19  1  0.700  0.300  0.300  1.0
  O  O20  1  0.300  0.700  0.700  1.0
  O  O21  1  0.700  0.300  0.700  1.0
[/CIF]
.