The material structure described by CrSe2 is trigonal omega-like structured and crystallizes in the cubic Fd-3m space group. Cr(1) is bonded to six equivalent Se(1) atoms to form edge-sharing CrSe6 octahedra. Se(1) is bonded in a distorted T-shaped geometry to three equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_CrSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.112
_cell_length_b   7.112
_cell_length_c   7.112
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   254.372
_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  0.625  0.625  0.125  1.0
  Cr  Cr1  1  0.625  0.125  0.625  1.0
  Cr  Cr2  1  0.625  0.625  0.625  1.0
  Cr  Cr3  1  0.125  0.625  0.625  1.0
  Se  Se4  1  0.377  0.377  0.377  1.0
  Se  Se5  1  0.381  0.873  0.873  1.0
  Se  Se6  1  0.873  0.381  0.873  1.0
  Se  Se7  1  0.873  0.873  0.381  1.0
  Se  Se8  1  0.377  0.869  0.377  1.0
  Se  Se9  1  0.377  0.377  0.869  1.0
  Se  Se10  1  0.869  0.377  0.377  1.0
  Se  Se11  1  0.873  0.873  0.873  1.0
[/CIF]
.
The material structure described by CrSe2 is trigonal omega-like structured and crystallizes in the cubic Fd-3m space group. Cr(1) is bonded to six equivalent Se(1) atoms to form edge-sharing CrSe6 octahedra. Se(1) is bonded in a distorted T-shaped geometry to three equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_CrSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.112
_cell_length_b   7.112
_cell_length_c   7.112
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   254.372
_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  0.625  0.625  0.125  1.0
  Cr  Cr1  1  0.625  0.125  0.625  1.0
  Cr  Cr2  1  0.625  0.625  0.625  1.0
  Cr  Cr3  1  0.125  0.625  0.625  1.0
  Se  Se4  1  0.377  0.377  0.377  1.0
  Se  Se5  1  0.381  0.873  0.873  1.0
  Se  Se6  1  0.873  0.381  0.873  1.0
  Se  Se7  1  0.873  0.873  0.381  1.0
  Se  Se8  1  0.377  0.869  0.377  1.0
  Se  Se9  1  0.377  0.377  0.869  1.0
  Se  Se10  1  0.869  0.377  0.377  1.0
  Se  Se11  1  0.873  0.873  0.873  1.0
[/CIF]
.