The material structure described by Cs2Se is Fluorite structured and crystallizes in the trigonal R-3m space group. Cs(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CsSe4 tetrahedra. Se(1) is bonded in a body-centered cubic geometry to eight equivalent Cs(1) atoms. is represented by the CIF file [CIF]
data_Cs2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.978
_cell_length_b   5.978
_cell_length_c   5.970
_cell_angle_alpha   59.957
_cell_angle_beta   59.957
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   150.758
_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
  Cs  Cs0  1  0.251  0.251  0.248  1.0
  Cs  Cs1  1  0.749  0.749  0.752  1.0
  Se  Se2  1  0.000  0.000  0.000  1.0
[/CIF]
.
The material structure described by Cs2Se is Fluorite structured and crystallizes in the trigonal R-3m space group. Cs(1) is bonded to four equivalent Se(1) atoms to form a mixture of corner and edge-sharing CsSe4 tetrahedra. Se(1) is bonded in a body-centered cubic geometry to eight equivalent Cs(1) atoms. is represented by the CIF file [CIF]
data_Cs2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.978
_cell_length_b   5.978
_cell_length_c   5.970
_cell_angle_alpha   59.957
_cell_angle_beta   59.957
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   150.758
_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
  Cs  Cs0  1  0.251  0.251  0.248  1.0
  Cs  Cs1  1  0.749  0.749  0.752  1.0
  Se  Se2  1  0.000  0.000  0.000  1.0
[/CIF]
.