The material structure described by Cs2SnTe4 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 9-coordinate geometry to two equivalent Te(2), three equivalent Te(1), and four equivalent Te(3) atoms. Sn(1) is bonded to one Te(1), one Te(2), and two equivalent Te(3) atoms to form SnTe4 tetrahedra that share corners with two equivalent Te(3)Cs4SnTe pentagonal pyramids. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to six equivalent Cs(1), one Sn(1), and one Te(2) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to four equivalent Cs(1), one Sn(1), and one Te(1) atom. In the third Te site, Te(3) is bonded to four equivalent Cs(1), one Sn(1), and one Te(3) atom to form distorted TeCs4SnTe pentagonal pyramids that share corners with five equivalent Te(3)Cs4SnTe pentagonal pyramids,  a cornercorner with one Sn(1)Te4 tetrahedra, and edges with four equivalent Te(3)Cs4SnTe pentagonal pyramids. is represented by the CIF file [CIF]
data_Cs2SnTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.810
_cell_length_b   12.132
_cell_length_c   12.920
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1224.124
_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
  Cs  Cs0  1  0.895  0.055  0.854  1.0
  Cs  Cs1  1  0.395  0.945  0.646  1.0
  Cs  Cs2  1  0.105  0.555  0.146  1.0
  Cs  Cs3  1  0.605  0.445  0.354  1.0
  Cs  Cs4  1  0.105  0.945  0.146  1.0
  Cs  Cs5  1  0.605  0.055  0.354  1.0
  Cs  Cs6  1  0.895  0.445  0.854  1.0
  Cs  Cs7  1  0.395  0.555  0.646  1.0
  Sn  Sn8  1  0.498  0.250  0.066  1.0
  Sn  Sn9  1  0.502  0.750  0.934  1.0
  Sn  Sn10  1  0.002  0.250  0.566  1.0
  Sn  Sn11  1  0.998  0.750  0.434  1.0
  Te  Te12  1  0.159  0.750  0.875  1.0
  Te  Te13  1  0.659  0.250  0.625  1.0
  Te  Te14  1  0.841  0.250  0.125  1.0
  Te  Te15  1  0.341  0.750  0.375  1.0
  Te  Te16  1  0.748  0.750  0.275  1.0
  Te  Te17  1  0.752  0.750  0.775  1.0
  Te  Te18  1  0.248  0.250  0.225  1.0
  Te  Te19  1  0.252  0.250  0.725  1.0
  Te  Te20  1  0.909  0.571  0.570  1.0
  Te  Te21  1  0.409  0.429  0.930  1.0
  Te  Te22  1  0.091  0.071  0.430  1.0
  Te  Te23  1  0.591  0.929  0.070  1.0
  Te  Te24  1  0.091  0.429  0.430  1.0
  Te  Te25  1  0.591  0.571  0.070  1.0
  Te  Te26  1  0.909  0.929  0.570  1.0
  Te  Te27  1  0.409  0.071  0.930  1.0
[/CIF]
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The material structure described by Cs2SnTe4 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 9-coordinate geometry to two equivalent Te(2), three equivalent Te(1), and four equivalent Te(3) atoms. Sn(1) is bonded to one Te(1), one Te(2), and two equivalent Te(3) atoms to form SnTe4 tetrahedra that share corners with two equivalent Te(3)Cs4SnTe pentagonal pyramids. There are three inequivalent Te sites. In the first Te site, Te(1) is bonded in a 8-coordinate geometry to six equivalent Cs(1), one Sn(1), and one Te(2) atom. In the second Te site, Te(2) is bonded in a 5-coordinate geometry to four equivalent Cs(1), one Sn(1), and one Te(1) atom. In the third Te site, Te(3) is bonded to four equivalent Cs(1), one Sn(1), and one Te(3) atom to form distorted TeCs4SnTe pentagonal pyramids that share corners with five equivalent Te(3)Cs4SnTe pentagonal pyramids,  a cornercorner with one Sn(1)Te4 tetrahedra, and edges with four equivalent Te(3)Cs4SnTe pentagonal pyramids. is represented by the CIF file [CIF]
data_Cs2SnTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.810
_cell_length_b   12.132
_cell_length_c   12.920
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1224.124
_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
  Cs  Cs0  1  0.895  0.055  0.854  1.0
  Cs  Cs1  1  0.395  0.945  0.646  1.0
  Cs  Cs2  1  0.105  0.555  0.146  1.0
  Cs  Cs3  1  0.605  0.445  0.354  1.0
  Cs  Cs4  1  0.105  0.945  0.146  1.0
  Cs  Cs5  1  0.605  0.055  0.354  1.0
  Cs  Cs6  1  0.895  0.445  0.854  1.0
  Cs  Cs7  1  0.395  0.555  0.646  1.0
  Sn  Sn8  1  0.498  0.250  0.066  1.0
  Sn  Sn9  1  0.502  0.750  0.934  1.0
  Sn  Sn10  1  0.002  0.250  0.566  1.0
  Sn  Sn11  1  0.998  0.750  0.434  1.0
  Te  Te12  1  0.159  0.750  0.875  1.0
  Te  Te13  1  0.659  0.250  0.625  1.0
  Te  Te14  1  0.841  0.250  0.125  1.0
  Te  Te15  1  0.341  0.750  0.375  1.0
  Te  Te16  1  0.748  0.750  0.275  1.0
  Te  Te17  1  0.752  0.750  0.775  1.0
  Te  Te18  1  0.248  0.250  0.225  1.0
  Te  Te19  1  0.252  0.250  0.725  1.0
  Te  Te20  1  0.909  0.571  0.570  1.0
  Te  Te21  1  0.409  0.429  0.930  1.0
  Te  Te22  1  0.091  0.071  0.430  1.0
  Te  Te23  1  0.591  0.929  0.070  1.0
  Te  Te24  1  0.091  0.429  0.430  1.0
  Te  Te25  1  0.591  0.571  0.070  1.0
  Te  Te26  1  0.909  0.929  0.570  1.0
  Te  Te27  1  0.409  0.071  0.930  1.0
[/CIF]
.