The material structure described by Cr2AgS4 crystallizes in the orthorhombic Pnma space group. 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 Ag(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 Ag(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 52-59°. 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 Ag(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 Ag(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 52-59°. Ag(1) is bonded to two equivalent S(3), two equivalent S(4), and three equivalent S(1) atoms to form distorted AgS7 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 Ag(1)S7 pentagonal bipyramids, and faces with two equivalent Ag(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-66°. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Cr(2) and three equivalent Ag(1) atoms to form distorted SCr2Ag3 square pyramids that share corners with two equivalent S(4)Cr3Ag2 square pyramids, corners with six equivalent S(3)Cr3Ag2 trigonal bipyramids, edges with three equivalent S(4)Cr3Ag2 square pyramids, edges with four equivalent S(1)Cr2Ag3 square pyramids, and edges with two equivalent S(3)Cr3Ag2 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 one Cr(1), two equivalent Cr(2), and two equivalent Ag(1) atoms to form distorted SCr3Ag2 trigonal bipyramids that share corners with two equivalent S(4)Cr3Ag2 square pyramids, corners with six equivalent S(1)Cr2Ag3 square pyramids, edges with two equivalent S(1)Cr2Ag3 square pyramids, edges with three equivalent S(4)Cr3Ag2 square pyramids, and edges with two equivalent S(3)Cr3Ag2 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Cr(2), two equivalent Cr(1), and two equivalent Ag(1) atoms to form distorted SCr3Ag2 square pyramids that share corners with two equivalent S(1)Cr2Ag3 square pyramids, corners with two equivalent S(3)Cr3Ag2 trigonal bipyramids, edges with two equivalent S(4)Cr3Ag2 square pyramids, edges with three equivalent S(1)Cr2Ag3 square pyramids, and edges with three equivalent S(3)Cr3Ag2 trigonal bipyramids. is represented by the CIF file [CIF]
data_Cr2AgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.494
_cell_length_b   11.644
_cell_length_c   11.940
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   485.803
_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
  Cr  Cr0  1  0.750  0.104  0.420  1.0
  Cr  Cr1  1  0.250  0.896  0.580  1.0
  Cr  Cr2  1  0.250  0.396  0.920  1.0
  Cr  Cr3  1  0.750  0.604  0.080  1.0
  Cr  Cr4  1  0.750  0.151  0.790  1.0
  Cr  Cr5  1  0.250  0.849  0.210  1.0
  Cr  Cr6  1  0.250  0.349  0.290  1.0
  Cr  Cr7  1  0.750  0.651  0.710  1.0
  Ag  Ag8  1  0.250  0.130  0.091  1.0
  Ag  Ag9  1  0.750  0.870  0.909  1.0
  Ag  Ag10  1  0.750  0.370  0.591  1.0
  Ag  Ag11  1  0.250  0.630  0.409  1.0
  S  S12  1  0.250  0.050  0.877  1.0
  S  S13  1  0.750  0.950  0.123  1.0
  S  S14  1  0.750  0.450  0.377  1.0
  S  S15  1  0.250  0.550  0.623  1.0
  S  S16  1  0.750  0.035  0.617  1.0
  S  S17  1  0.250  0.965  0.383  1.0
  S  S18  1  0.250  0.465  0.117  1.0
  S  S19  1  0.750  0.535  0.883  1.0
  S  S20  1  0.750  0.210  0.248  1.0
  S  S21  1  0.250  0.790  0.752  1.0
  S  S22  1  0.250  0.290  0.748  1.0
  S  S23  1  0.750  0.710  0.252  1.0
  S  S24  1  0.250  0.236  0.460  1.0
  S  S25  1  0.750  0.764  0.540  1.0
  S  S26  1  0.750  0.264  0.960  1.0
  S  S27  1  0.250  0.736  0.040  1.0
[/CIF]
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The material structure described by Cr2AgS4 crystallizes in the orthorhombic Pnma space group. 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 Ag(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 Ag(1)S7 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 52-59°. 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 Ag(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 Ag(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 52-59°. Ag(1) is bonded to two equivalent S(3), two equivalent S(4), and three equivalent S(1) atoms to form distorted AgS7 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 Ag(1)S7 pentagonal bipyramids, and faces with two equivalent Ag(1)S7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 22-66°. There are four inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Cr(2) and three equivalent Ag(1) atoms to form distorted SCr2Ag3 square pyramids that share corners with two equivalent S(4)Cr3Ag2 square pyramids, corners with six equivalent S(3)Cr3Ag2 trigonal bipyramids, edges with three equivalent S(4)Cr3Ag2 square pyramids, edges with four equivalent S(1)Cr2Ag3 square pyramids, and edges with two equivalent S(3)Cr3Ag2 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 one Cr(1), two equivalent Cr(2), and two equivalent Ag(1) atoms to form distorted SCr3Ag2 trigonal bipyramids that share corners with two equivalent S(4)Cr3Ag2 square pyramids, corners with six equivalent S(1)Cr2Ag3 square pyramids, edges with two equivalent S(1)Cr2Ag3 square pyramids, edges with three equivalent S(4)Cr3Ag2 square pyramids, and edges with two equivalent S(3)Cr3Ag2 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Cr(2), two equivalent Cr(1), and two equivalent Ag(1) atoms to form distorted SCr3Ag2 square pyramids that share corners with two equivalent S(1)Cr2Ag3 square pyramids, corners with two equivalent S(3)Cr3Ag2 trigonal bipyramids, edges with two equivalent S(4)Cr3Ag2 square pyramids, edges with three equivalent S(1)Cr2Ag3 square pyramids, and edges with three equivalent S(3)Cr3Ag2 trigonal bipyramids. is represented by the CIF file [CIF]
data_Cr2AgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.494
_cell_length_b   11.644
_cell_length_c   11.940
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   485.803
_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
  Cr  Cr0  1  0.750  0.104  0.420  1.0
  Cr  Cr1  1  0.250  0.896  0.580  1.0
  Cr  Cr2  1  0.250  0.396  0.920  1.0
  Cr  Cr3  1  0.750  0.604  0.080  1.0
  Cr  Cr4  1  0.750  0.151  0.790  1.0
  Cr  Cr5  1  0.250  0.849  0.210  1.0
  Cr  Cr6  1  0.250  0.349  0.290  1.0
  Cr  Cr7  1  0.750  0.651  0.710  1.0
  Ag  Ag8  1  0.250  0.130  0.091  1.0
  Ag  Ag9  1  0.750  0.870  0.909  1.0
  Ag  Ag10  1  0.750  0.370  0.591  1.0
  Ag  Ag11  1  0.250  0.630  0.409  1.0
  S  S12  1  0.250  0.050  0.877  1.0
  S  S13  1  0.750  0.950  0.123  1.0
  S  S14  1  0.750  0.450  0.377  1.0
  S  S15  1  0.250  0.550  0.623  1.0
  S  S16  1  0.750  0.035  0.617  1.0
  S  S17  1  0.250  0.965  0.383  1.0
  S  S18  1  0.250  0.465  0.117  1.0
  S  S19  1  0.750  0.535  0.883  1.0
  S  S20  1  0.750  0.210  0.248  1.0
  S  S21  1  0.250  0.790  0.752  1.0
  S  S22  1  0.250  0.290  0.748  1.0
  S  S23  1  0.750  0.710  0.252  1.0
  S  S24  1  0.250  0.236  0.460  1.0
  S  S25  1  0.750  0.764  0.540  1.0
  S  S26  1  0.750  0.264  0.960  1.0
  S  S27  1  0.250  0.736  0.040  1.0
[/CIF]
.