The crystal structure described by CeSe2 is quartz (alpha) structured and crystallizes in the trigonal P3_121 space group. Ce(1) is bonded to four equivalent Se(1) atoms to form corner-sharing CeSe4 tetrahedra. Se(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.114
_cell_length_b   8.114
_cell_length_c   8.437
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   481.074
_cell_formula_units_Z   3
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
  Ce  Ce0  1  0.455  0.000  0.833  1.0
  Ce  Ce1  1  0.545  0.545  0.500  1.0
  Ce  Ce2  1  0.000  0.455  0.167  1.0
  Se  Se3  1  0.107  0.713  0.926  1.0
  Se  Se4  1  0.606  0.893  0.593  1.0
  Se  Se5  1  0.287  0.394  0.260  1.0
  Se  Se6  1  0.893  0.606  0.407  1.0
  Se  Se7  1  0.713  0.107  0.074  1.0
  Se  Se8  1  0.394  0.287  0.740  1.0
[/CIF]
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The crystal structure described by CeSe2 is quartz (alpha) structured and crystallizes in the trigonal P3_121 space group. Ce(1) is bonded to four equivalent Se(1) atoms to form corner-sharing CeSe4 tetrahedra. Se(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. is represented by the CIF card [CIF]
data_CeSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.114
_cell_length_b   8.114
_cell_length_c   8.437
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   481.074
_cell_formula_units_Z   3
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
  Ce  Ce0  1  0.455  0.000  0.833  1.0
  Ce  Ce1  1  0.545  0.545  0.500  1.0
  Ce  Ce2  1  0.000  0.455  0.167  1.0
  Se  Se3  1  0.107  0.713  0.926  1.0
  Se  Se4  1  0.606  0.893  0.593  1.0
  Se  Se5  1  0.287  0.394  0.260  1.0
  Se  Se6  1  0.893  0.606  0.407  1.0
  Se  Se7  1  0.713  0.107  0.074  1.0
  Se  Se8  1  0.394  0.287  0.740  1.0
[/CIF]
.