The structure described by MgPr2S4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to four equivalent S(1) atoms to form MgS4 tetrahedra that share corners with twelve equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 55°. Pr(1) is bonded to six equivalent S(1) atoms to form PrS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra and edges with six equivalent Pr(1)S6 octahedra. S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1) and three equivalent Pr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2MgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.175
_cell_length_b   8.175
_cell_length_c   8.175
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   386.354
_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  0.625  0.125  0.625  1.0
  Pr  Pr1  1  0.625  0.625  0.125  1.0
  Pr  Pr2  1  0.125  0.625  0.625  1.0
  Pr  Pr3  1  0.625  0.625  0.625  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
  Mg  Mg5  1  0.250  0.250  0.250  1.0
  S  S6  1  0.377  0.377  0.377  1.0
  S  S7  1  0.868  0.377  0.377  1.0
  S  S8  1  0.377  0.868  0.377  1.0
  S  S9  1  0.377  0.377  0.868  1.0
  S  S10  1  0.873  0.873  0.382  1.0
  S  S11  1  0.873  0.382  0.873  1.0
  S  S12  1  0.382  0.873  0.873  1.0
  S  S13  1  0.873  0.873  0.873  1.0
[/CIF]
.
The structure described by MgPr2S4 is Spinel structured and crystallizes in the cubic Fd-3m space group. Mg(1) is bonded to four equivalent S(1) atoms to form MgS4 tetrahedra that share corners with twelve equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles are 55°. Pr(1) is bonded to six equivalent S(1) atoms to form PrS6 octahedra that share corners with six equivalent Mg(1)S4 tetrahedra and edges with six equivalent Pr(1)S6 octahedra. S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1) and three equivalent Pr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pr2MgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.175
_cell_length_b   8.175
_cell_length_c   8.175
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   386.354
_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  0.625  0.125  0.625  1.0
  Pr  Pr1  1  0.625  0.625  0.125  1.0
  Pr  Pr2  1  0.125  0.625  0.625  1.0
  Pr  Pr3  1  0.625  0.625  0.625  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
  Mg  Mg5  1  0.250  0.250  0.250  1.0
  S  S6  1  0.377  0.377  0.377  1.0
  S  S7  1  0.868  0.377  0.377  1.0
  S  S8  1  0.377  0.868  0.377  1.0
  S  S9  1  0.377  0.377  0.868  1.0
  S  S10  1  0.873  0.873  0.382  1.0
  S  S11  1  0.873  0.382  0.873  1.0
  S  S12  1  0.382  0.873  0.873  1.0
  S  S13  1  0.873  0.873  0.873  1.0
[/CIF]
.