The material described by PrSO crystallizes in the monoclinic Cm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), one S(4), two equivalent O(1), and two equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), one S(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(4) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(1)Pr4 tetrahedra, corners with eight equivalent O(2)Pr4 tetrahedra, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent S(2)Pr4S trigonal bipyramids, edges with two equivalent S(3)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the second S site, S(2) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(3) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(1)Pr4 tetrahedra, corners with eight equivalent O(2)Pr4 tetrahedra, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(3)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the third S site, S(3) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(2) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(2)Pr4 tetrahedra, corners with eight equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(2)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(1) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(2)Pr4 tetrahedra, corners with eight equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(2)Pr4S trigonal bipyramids, and edges with two equivalent S(3)Pr4S trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(2)Pr4 tetrahedra, corners with two equivalent S(1)Pr4S trigonal bipyramids, corners with two equivalent S(2)Pr4S trigonal bipyramids, corners with four equivalent S(3)Pr4S trigonal bipyramids, corners with four equivalent S(4)Pr4S trigonal bipyramids, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra,  an edgeedge with one S(1)Pr4S trigonal bipyramid, and  an edgeedge with one S(2)Pr4S trigonal bipyramid. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with two equivalent S(3)Pr4S trigonal bipyramids, corners with two equivalent S(4)Pr4S trigonal bipyramids, corners with four equivalent S(1)Pr4S trigonal bipyramids, corners with four equivalent S(2)Pr4S trigonal bipyramids, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra,  an edgeedge with one S(3)Pr4S trigonal bipyramid, and  an edgeedge with one S(4)Pr4S trigonal bipyramid. is represented by the CIF card [CIF]
data_PrSO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.897
_cell_length_b   7.173
_cell_length_c   5.890
_cell_angle_alpha   90.006
_cell_angle_beta   90.000
_cell_angle_gamma   114.266
_symmetry_Int_Tables_number   1
_cell_volume   227.137
_cell_formula_units_Z   4
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  0.659  0.322  0.005  1.0
  Pr  Pr1  1  0.336  0.676  0.005  1.0
  Pr  Pr2  1  0.836  0.676  0.505  1.0
  Pr  Pr3  1  0.159  0.321  0.505  1.0
  S  S4  1  0.873  0.999  0.130  1.0
  S  S5  1  0.374  0.999  0.380  1.0
  S  S6  1  0.624  0.999  0.632  1.0
  S  S7  1  0.124  0.999  0.880  1.0
  O  O8  1  0.492  0.499  0.255  1.0
  O  O9  1  0.992  0.499  0.255  1.0
  O  O10  1  0.503  0.499  0.755  1.0
  O  O11  1  0.003  0.499  0.755  1.0
[/CIF]
.
The material described by PrSO crystallizes in the monoclinic Cm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), one S(4), two equivalent O(1), and two equivalent O(2) atoms. In the second Pr site, Pr(2) is bonded in a 4-coordinate geometry to one S(1), one S(2), one S(3), one S(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(4) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(1)Pr4 tetrahedra, corners with eight equivalent O(2)Pr4 tetrahedra, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent S(2)Pr4S trigonal bipyramids, edges with two equivalent S(3)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the second S site, S(2) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(3) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(1)Pr4 tetrahedra, corners with eight equivalent O(2)Pr4 tetrahedra, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(3)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the third S site, S(3) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(2) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(2)Pr4 tetrahedra, corners with eight equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(2)Pr4S trigonal bipyramids, and edges with two equivalent S(4)Pr4S trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Pr(1), two equivalent Pr(2), and one S(1) atom to form distorted SPr4S trigonal bipyramids that share corners with four equivalent O(2)Pr4 tetrahedra, corners with eight equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra, edges with two equivalent S(1)Pr4S trigonal bipyramids, edges with two equivalent S(2)Pr4S trigonal bipyramids, and edges with two equivalent S(3)Pr4S trigonal bipyramids. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(2)Pr4 tetrahedra, corners with two equivalent S(1)Pr4S trigonal bipyramids, corners with two equivalent S(2)Pr4S trigonal bipyramids, corners with four equivalent S(3)Pr4S trigonal bipyramids, corners with four equivalent S(4)Pr4S trigonal bipyramids, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra,  an edgeedge with one S(1)Pr4S trigonal bipyramid, and  an edgeedge with one S(2)Pr4S trigonal bipyramid. In the second O site, O(2) is bonded to two equivalent Pr(1) and two equivalent Pr(2) atoms to form OPr4 tetrahedra that share corners with four equivalent O(1)Pr4 tetrahedra, corners with two equivalent S(3)Pr4S trigonal bipyramids, corners with two equivalent S(4)Pr4S trigonal bipyramids, corners with four equivalent S(1)Pr4S trigonal bipyramids, corners with four equivalent S(2)Pr4S trigonal bipyramids, edges with two equivalent O(1)Pr4 tetrahedra, edges with two equivalent O(2)Pr4 tetrahedra,  an edgeedge with one S(3)Pr4S trigonal bipyramid, and  an edgeedge with one S(4)Pr4S trigonal bipyramid. is represented by the CIF card [CIF]
data_PrSO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.897
_cell_length_b   7.173
_cell_length_c   5.890
_cell_angle_alpha   90.006
_cell_angle_beta   90.000
_cell_angle_gamma   114.266
_symmetry_Int_Tables_number   1
_cell_volume   227.137
_cell_formula_units_Z   4
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  0.659  0.322  0.005  1.0
  Pr  Pr1  1  0.336  0.676  0.005  1.0
  Pr  Pr2  1  0.836  0.676  0.505  1.0
  Pr  Pr3  1  0.159  0.321  0.505  1.0
  S  S4  1  0.873  0.999  0.130  1.0
  S  S5  1  0.374  0.999  0.380  1.0
  S  S6  1  0.624  0.999  0.632  1.0
  S  S7  1  0.124  0.999  0.880  1.0
  O  O8  1  0.492  0.499  0.255  1.0
  O  O9  1  0.992  0.499  0.255  1.0
  O  O10  1  0.503  0.499  0.755  1.0
  O  O11  1  0.003  0.499  0.755  1.0
[/CIF]
.