The structure described by Na2CoSe2 crystallizes in the orthorhombic Ibam space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent Co(1) and five equivalent Se(1) atoms. Co(1) is bonded to four equivalent Na(1) and four equivalent Se(1) atoms to form distorted face-sharing CoNa4Se4 tetrahedra. Se(1) is bonded in a 7-coordinate geometry to five equivalent Na(1) and two equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_Na2CoSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.442
_cell_length_b   7.442
_cell_length_c   7.442
_cell_angle_alpha   133.882
_cell_angle_beta   128.200
_cell_angle_gamma   71.845
_symmetry_Int_Tables_number   1
_cell_volume   228.402
_cell_formula_units_Z   2
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
  Na  Na0  1  0.812  0.642  0.170  1.0
  Na  Na1  1  0.188  0.358  0.830  1.0
  Na  Na2  1  0.472  0.142  0.330  1.0
  Na  Na3  1  0.528  0.858  0.670  1.0
  Co  Co4  1  0.000  0.750  0.750  1.0
  Co  Co5  1  0.000  0.250  0.250  1.0
  Se  Se6  1  0.677  0.387  0.290  1.0
  Se  Se7  1  0.323  0.613  0.710  1.0
  Se  Se8  1  0.097  0.887  0.210  1.0
  Se  Se9  1  0.903  0.113  0.790  1.0
[/CIF]
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The structure described by Na2CoSe2 crystallizes in the orthorhombic Ibam space group. Na(1) is bonded in a 7-coordinate geometry to two equivalent Co(1) and five equivalent Se(1) atoms. Co(1) is bonded to four equivalent Na(1) and four equivalent Se(1) atoms to form distorted face-sharing CoNa4Se4 tetrahedra. Se(1) is bonded in a 7-coordinate geometry to five equivalent Na(1) and two equivalent Co(1) atoms. is represented by the CIF file [CIF]
data_Na2CoSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.442
_cell_length_b   7.442
_cell_length_c   7.442
_cell_angle_alpha   133.882
_cell_angle_beta   128.200
_cell_angle_gamma   71.845
_symmetry_Int_Tables_number   1
_cell_volume   228.402
_cell_formula_units_Z   2
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
  Na  Na0  1  0.812  0.642  0.170  1.0
  Na  Na1  1  0.188  0.358  0.830  1.0
  Na  Na2  1  0.472  0.142  0.330  1.0
  Na  Na3  1  0.528  0.858  0.670  1.0
  Co  Co4  1  0.000  0.750  0.750  1.0
  Co  Co5  1  0.000  0.250  0.250  1.0
  Se  Se6  1  0.677  0.387  0.290  1.0
  Se  Se7  1  0.323  0.613  0.710  1.0
  Se  Se8  1  0.097  0.887  0.210  1.0
  Se  Se9  1  0.903  0.113  0.790  1.0
[/CIF]
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