The crystal structure described by Pr2CrS4 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded to three equivalent S(1) and three equivalent S(2) atoms to form distorted PrS6 octahedra that share corners with six equivalent Cr(1)S6 octahedra, edges with six equivalent Pr(1)S6 octahedra, and  a faceface with one Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. Cr(1) is bonded to two equivalent S(1) and four equivalent S(2) atoms to form CrS6 octahedra that share corners with twelve equivalent Pr(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and faces with two equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are two inequivalent S sites. In the first S site, S(2) is bonded to three equivalent Pr(1) and two equivalent Cr(1) atoms to form a mixture of distorted corner and edge-sharing SPr3Cr2 square pyramids. In the second S site, S(1) is bonded in a rectangular see-saw-like geometry to three equivalent Pr(1) and one Cr(1) atom. is represented by the CIF card [CIF]
data_Pr2CrS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.163
_cell_length_b   7.163
_cell_length_c   7.182
_cell_angle_alpha   60.740
_cell_angle_beta   60.740
_cell_angle_gamma   32.924
_symmetry_Int_Tables_number   1
_cell_volume   172.333
_cell_formula_units_Z   1
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  0.711  0.711  0.292  1.0
  Pr  Pr1  1  0.289  0.289  0.708  1.0
  Cr  Cr2  1  0.000  0.000  0.000  1.0
  S  S3  1  0.891  0.891  0.393  1.0
  S  S4  1  0.109  0.109  0.607  1.0
  S  S5  1  0.632  0.632  0.993  1.0
  S  S6  1  0.368  0.368  0.007  1.0
[/CIF]
.
The crystal structure described by Pr2CrS4 crystallizes in the monoclinic C2/m space group. Pr(1) is bonded to three equivalent S(1) and three equivalent S(2) atoms to form distorted PrS6 octahedra that share corners with six equivalent Cr(1)S6 octahedra, edges with six equivalent Pr(1)S6 octahedra, and  a faceface with one Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. Cr(1) is bonded to two equivalent S(1) and four equivalent S(2) atoms to form CrS6 octahedra that share corners with twelve equivalent Pr(1)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and faces with two equivalent Pr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 38-60°. There are two inequivalent S sites. In the first S site, S(2) is bonded to three equivalent Pr(1) and two equivalent Cr(1) atoms to form a mixture of distorted corner and edge-sharing SPr3Cr2 square pyramids. In the second S site, S(1) is bonded in a rectangular see-saw-like geometry to three equivalent Pr(1) and one Cr(1) atom. is represented by the CIF card [CIF]
data_Pr2CrS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.163
_cell_length_b   7.163
_cell_length_c   7.182
_cell_angle_alpha   60.740
_cell_angle_beta   60.740
_cell_angle_gamma   32.924
_symmetry_Int_Tables_number   1
_cell_volume   172.333
_cell_formula_units_Z   1
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  0.711  0.711  0.292  1.0
  Pr  Pr1  1  0.289  0.289  0.708  1.0
  Cr  Cr2  1  0.000  0.000  0.000  1.0
  S  S3  1  0.891  0.891  0.393  1.0
  S  S4  1  0.109  0.109  0.607  1.0
  S  S5  1  0.632  0.632  0.993  1.0
  S  S6  1  0.368  0.368  0.007  1.0
[/CIF]
.