The material structure described by Pr2Sn2O7 crystallizes in the cubic Fd-3m space group. Pr(1) is bonded to two equivalent O(1) and six equivalent O(2) atoms to form distorted PrO8 hexagonal bipyramids that share edges with six equivalent Pr(1)O8 hexagonal bipyramids and edges with six equivalent Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra and edges with six equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 50°. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with twelve equivalent O(2)Pr2Sn2 tetrahedra, and edges with six equivalent O(2)Pr2Sn2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Sn(1) atoms to form distorted OPr2Sn2 tetrahedra that share corners with two equivalent O(1)Pr4 tetrahedra, corners with twelve equivalent O(2)Pr2Sn2 tetrahedra,  an edgeedge with one O(1)Pr4 tetrahedra, and edges with four equivalent O(2)Pr2Sn2 tetrahedra. is represented by the CIF card [CIF]
data_Pr2Sn2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.545
_cell_length_b   7.545
_cell_length_c   7.545
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   303.658
_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
  Pr  Pr0  1  0.125  0.125  0.125  1.0
  Pr  Pr1  1  0.625  0.125  0.125  1.0
  Pr  Pr2  1  0.125  0.125  0.625  1.0
  Pr  Pr3  1  0.125  0.625  0.125  1.0
  Sn  Sn4  1  0.625  0.625  0.625  1.0
  Sn  Sn5  1  0.125  0.625  0.625  1.0
  Sn  Sn6  1  0.625  0.625  0.125  1.0
  Sn  Sn7  1  0.625  0.125  0.625  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.250  0.250  0.250  1.0
  O  O10  1  0.293  0.293  0.707  1.0
  O  O11  1  0.543  0.543  0.957  1.0
  O  O12  1  0.707  0.293  0.707  1.0
  O  O13  1  0.707  0.293  0.293  1.0
  O  O14  1  0.293  0.707  0.707  1.0
  O  O15  1  0.293  0.707  0.293  1.0
  O  O16  1  0.707  0.707  0.293  1.0
  O  O17  1  0.957  0.543  0.543  1.0
  O  O18  1  0.543  0.957  0.957  1.0
  O  O19  1  0.957  0.957  0.543  1.0
  O  O20  1  0.957  0.543  0.957  1.0
  O  O21  1  0.543  0.957  0.543  1.0
[/CIF]
.
The material structure described by Pr2Sn2O7 crystallizes in the cubic Fd-3m space group. Pr(1) is bonded to two equivalent O(1) and six equivalent O(2) atoms to form distorted PrO8 hexagonal bipyramids that share edges with six equivalent Pr(1)O8 hexagonal bipyramids and edges with six equivalent Sn(1)O6 octahedra. Sn(1) is bonded to six equivalent O(2) atoms to form SnO6 octahedra that share corners with six equivalent Sn(1)O6 octahedra and edges with six equivalent Pr(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 50°. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Pr(1) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with twelve equivalent O(2)Pr2Sn2 tetrahedra, and edges with six equivalent O(2)Pr2Sn2 tetrahedra. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Sn(1) atoms to form distorted OPr2Sn2 tetrahedra that share corners with two equivalent O(1)Pr4 tetrahedra, corners with twelve equivalent O(2)Pr2Sn2 tetrahedra,  an edgeedge with one O(1)Pr4 tetrahedra, and edges with four equivalent O(2)Pr2Sn2 tetrahedra. is represented by the CIF card [CIF]
data_Pr2Sn2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.545
_cell_length_b   7.545
_cell_length_c   7.545
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   303.658
_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
  Pr  Pr0  1  0.125  0.125  0.125  1.0
  Pr  Pr1  1  0.625  0.125  0.125  1.0
  Pr  Pr2  1  0.125  0.125  0.625  1.0
  Pr  Pr3  1  0.125  0.625  0.125  1.0
  Sn  Sn4  1  0.625  0.625  0.625  1.0
  Sn  Sn5  1  0.125  0.625  0.625  1.0
  Sn  Sn6  1  0.625  0.625  0.125  1.0
  Sn  Sn7  1  0.625  0.125  0.625  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.250  0.250  0.250  1.0
  O  O10  1  0.293  0.293  0.707  1.0
  O  O11  1  0.543  0.543  0.957  1.0
  O  O12  1  0.707  0.293  0.707  1.0
  O  O13  1  0.707  0.293  0.293  1.0
  O  O14  1  0.293  0.707  0.707  1.0
  O  O15  1  0.293  0.707  0.293  1.0
  O  O16  1  0.707  0.707  0.293  1.0
  O  O17  1  0.957  0.543  0.543  1.0
  O  O18  1  0.543  0.957  0.957  1.0
  O  O19  1  0.957  0.957  0.543  1.0
  O  O20  1  0.957  0.543  0.957  1.0
  O  O21  1  0.543  0.957  0.543  1.0
[/CIF]
.