The crystal structure described by Na(CrS2)2 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded to two equivalent S(3), two equivalent S(4), and three equivalent S(1) atoms to form distorted NaS7 pentagonal bipyramids that share corners with four equivalent Cr(1)S6 octahedra, corners with four equivalent Cr(2)S6 octahedra,  an edgeedge with one Cr(1)S6 octahedra, edges with four equivalent Cr(2)S6 octahedra, edges with two equivalent Na(1)S7 pentagonal bipyramids, and faces with two equivalent Na(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 17-63°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(3), two equivalent S(4), and three equivalent S(2) atoms to form CrS6 octahedra that share corners with three equivalent Cr(2)S6 octahedra, corners with four equivalent Na(1)S7 pentagonal bipyramids, edges with two equivalent Cr(2)S6 octahedra, edges with four equivalent Cr(1)S6 octahedra, and  an edgeedge with one Na(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 50-60°. In the second Cr site, Cr(2) is bonded to one S(2), one S(4), two equivalent S(1), and two equivalent S(3) atoms to form CrS6 octahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with four equivalent Na(1)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, and edges with four equivalent Na(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 50-60°. There are four inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Na(1) and two equivalent Cr(2) atoms to form SNa3Cr2 square pyramids that share corners with two equivalent S(4)Na2Cr3 square pyramids, corners with six equivalent S(3)Na2Cr3 trigonal bipyramids, edges with three equivalent S(4)Na2Cr3 square pyramids, edges with four equivalent S(1)Na3Cr2 square pyramids, and edges with two equivalent S(3)Na2Cr3 trigonal bipyramids. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Cr(2) and three equivalent Cr(1) atoms. In the third S site, S(3) is bonded to two equivalent Na(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted SNa2Cr3 trigonal bipyramids that share corners with two equivalent S(4)Na2Cr3 square pyramids, corners with six equivalent S(1)Na3Cr2 square pyramids, edges with two equivalent S(1)Na3Cr2 square pyramids, edges with three equivalent S(4)Na2Cr3 square pyramids, and edges with two equivalent S(3)Na2Cr3 trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Na(1), one Cr(2), and two equivalent Cr(1) atoms to form SNa2Cr3 square pyramids that share corners with two equivalent S(1)Na3Cr2 square pyramids, corners with two equivalent S(3)Na2Cr3 trigonal bipyramids, edges with two equivalent S(4)Na2Cr3 square pyramids, edges with three equivalent S(1)Na3Cr2 square pyramids, and edges with three equivalent S(3)Na2Cr3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Na(CrS2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.524
_cell_length_b   3.524
_cell_length_c   12.271
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   498.398
_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
  Na  Na0  1  0.135  0.750  0.413  1.0
  Na  Na1  1  0.865  0.250  0.587  1.0
  Na  Na2  1  0.365  0.250  0.913  1.0
  Na  Na3  1  0.635  0.750  0.087  1.0
  Cr  Cr4  1  0.103  0.250  0.080  1.0
  Cr  Cr5  1  0.897  0.750  0.920  1.0
  Cr  Cr6  1  0.397  0.750  0.580  1.0
  Cr  Cr7  1  0.603  0.250  0.420  1.0
  Cr  Cr8  1  0.152  0.250  0.705  1.0
  Cr  Cr9  1  0.848  0.750  0.295  1.0
  Cr  Cr10  1  0.348  0.750  0.205  1.0
  Cr  Cr11  1  0.652  0.250  0.795  1.0
  S  S12  1  0.044  0.750  0.635  1.0
  S  S13  1  0.956  0.250  0.365  1.0
  S  S14  1  0.456  0.250  0.135  1.0
  S  S15  1  0.544  0.750  0.865  1.0
  S  S16  1  0.035  0.250  0.884  1.0
  S  S17  1  0.965  0.750  0.116  1.0
  S  S18  1  0.465  0.750  0.384  1.0
  S  S19  1  0.535  0.250  0.616  1.0
  S  S20  1  0.212  0.250  0.247  1.0
  S  S21  1  0.788  0.750  0.753  1.0
  S  S22  1  0.288  0.750  0.747  1.0
  S  S23  1  0.712  0.250  0.253  1.0
  S  S24  1  0.234  0.750  0.039  1.0
  S  S25  1  0.766  0.250  0.961  1.0
  S  S26  1  0.266  0.250  0.539  1.0
  S  S27  1  0.734  0.750  0.461  1.0
[/CIF]
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The crystal structure described by Na(CrS2)2 crystallizes in the orthorhombic Pnma space group. Na(1) is bonded to two equivalent S(3), two equivalent S(4), and three equivalent S(1) atoms to form distorted NaS7 pentagonal bipyramids that share corners with four equivalent Cr(1)S6 octahedra, corners with four equivalent Cr(2)S6 octahedra,  an edgeedge with one Cr(1)S6 octahedra, edges with four equivalent Cr(2)S6 octahedra, edges with two equivalent Na(1)S7 pentagonal bipyramids, and faces with two equivalent Na(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 17-63°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one S(3), two equivalent S(4), and three equivalent S(2) atoms to form CrS6 octahedra that share corners with three equivalent Cr(2)S6 octahedra, corners with four equivalent Na(1)S7 pentagonal bipyramids, edges with two equivalent Cr(2)S6 octahedra, edges with four equivalent Cr(1)S6 octahedra, and  an edgeedge with one Na(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 50-60°. In the second Cr site, Cr(2) is bonded to one S(2), one S(4), two equivalent S(1), and two equivalent S(3) atoms to form CrS6 octahedra that share corners with three equivalent Cr(1)S6 octahedra, corners with four equivalent Na(1)S7 pentagonal bipyramids, edges with two equivalent Cr(1)S6 octahedra, edges with two equivalent Cr(2)S6 octahedra, and edges with four equivalent Na(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 50-60°. There are four inequivalent S sites. In the first S site, S(1) is bonded to three equivalent Na(1) and two equivalent Cr(2) atoms to form SNa3Cr2 square pyramids that share corners with two equivalent S(4)Na2Cr3 square pyramids, corners with six equivalent S(3)Na2Cr3 trigonal bipyramids, edges with three equivalent S(4)Na2Cr3 square pyramids, edges with four equivalent S(1)Na3Cr2 square pyramids, and edges with two equivalent S(3)Na2Cr3 trigonal bipyramids. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Cr(2) and three equivalent Cr(1) atoms. In the third S site, S(3) is bonded to two equivalent Na(1), one Cr(1), and two equivalent Cr(2) atoms to form distorted SNa2Cr3 trigonal bipyramids that share corners with two equivalent S(4)Na2Cr3 square pyramids, corners with six equivalent S(1)Na3Cr2 square pyramids, edges with two equivalent S(1)Na3Cr2 square pyramids, edges with three equivalent S(4)Na2Cr3 square pyramids, and edges with two equivalent S(3)Na2Cr3 trigonal bipyramids. In the fourth S site, S(4) is bonded to two equivalent Na(1), one Cr(2), and two equivalent Cr(1) atoms to form SNa2Cr3 square pyramids that share corners with two equivalent S(1)Na3Cr2 square pyramids, corners with two equivalent S(3)Na2Cr3 trigonal bipyramids, edges with two equivalent S(4)Na2Cr3 square pyramids, edges with three equivalent S(1)Na3Cr2 square pyramids, and edges with three equivalent S(3)Na2Cr3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Na(CrS2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.524
_cell_length_b   3.524
_cell_length_c   12.271
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   498.398
_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
  Na  Na0  1  0.135  0.750  0.413  1.0
  Na  Na1  1  0.865  0.250  0.587  1.0
  Na  Na2  1  0.365  0.250  0.913  1.0
  Na  Na3  1  0.635  0.750  0.087  1.0
  Cr  Cr4  1  0.103  0.250  0.080  1.0
  Cr  Cr5  1  0.897  0.750  0.920  1.0
  Cr  Cr6  1  0.397  0.750  0.580  1.0
  Cr  Cr7  1  0.603  0.250  0.420  1.0
  Cr  Cr8  1  0.152  0.250  0.705  1.0
  Cr  Cr9  1  0.848  0.750  0.295  1.0
  Cr  Cr10  1  0.348  0.750  0.205  1.0
  Cr  Cr11  1  0.652  0.250  0.795  1.0
  S  S12  1  0.044  0.750  0.635  1.0
  S  S13  1  0.956  0.250  0.365  1.0
  S  S14  1  0.456  0.250  0.135  1.0
  S  S15  1  0.544  0.750  0.865  1.0
  S  S16  1  0.035  0.250  0.884  1.0
  S  S17  1  0.965  0.750  0.116  1.0
  S  S18  1  0.465  0.750  0.384  1.0
  S  S19  1  0.535  0.250  0.616  1.0
  S  S20  1  0.212  0.250  0.247  1.0
  S  S21  1  0.788  0.750  0.753  1.0
  S  S22  1  0.288  0.750  0.747  1.0
  S  S23  1  0.712  0.250  0.253  1.0
  S  S24  1  0.234  0.750  0.039  1.0
  S  S25  1  0.766  0.250  0.961  1.0
  S  S26  1  0.266  0.250  0.539  1.0
  S  S27  1  0.734  0.750  0.461  1.0
[/CIF]
.