The compound described by CoCr2Se4 crystallizes in the triclinic P-1 space group. Cr(1) is bonded in a 6-coordinate geometry to three equivalent Se(1) and three equivalent Se(2) atoms. Co(1) is bonded in a square co-planar geometry to two equivalent Se(1) and two equivalent Se(2) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted see-saw-like geometry to three equivalent Cr(1) and one Co(1) atom. In the second Se site, Se(2) is bonded in a distorted square co-planar geometry to three equivalent Cr(1) and one Co(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2CoSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.100
_cell_length_b   6.444
_cell_length_c   6.897
_cell_angle_alpha   136.670
_cell_angle_beta   116.370
_cell_angle_gamma   69.110
_symmetry_Int_Tables_number   1
_cell_volume   139.157
_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
  Cr  Cr0  1  0.641  0.612  0.377  1.0
  Cr  Cr1  1  0.359  0.388  0.623  1.0
  Co  Co2  1  0.000  0.000  0.000  1.0
  Se  Se3  1  0.514  0.131  0.824  1.0
  Se  Se4  1  0.869  0.503  0.699  1.0
  Se  Se5  1  0.131  0.497  0.301  1.0
  Se  Se6  1  0.486  0.869  0.176  1.0
[/CIF]
.
The compound described by CoCr2Se4 crystallizes in the triclinic P-1 space group. Cr(1) is bonded in a 6-coordinate geometry to three equivalent Se(1) and three equivalent Se(2) atoms. Co(1) is bonded in a square co-planar geometry to two equivalent Se(1) and two equivalent Se(2) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a distorted see-saw-like geometry to three equivalent Cr(1) and one Co(1) atom. In the second Se site, Se(2) is bonded in a distorted square co-planar geometry to three equivalent Cr(1) and one Co(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2CoSe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.100
_cell_length_b   6.444
_cell_length_c   6.897
_cell_angle_alpha   136.670
_cell_angle_beta   116.370
_cell_angle_gamma   69.110
_symmetry_Int_Tables_number   1
_cell_volume   139.157
_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
  Cr  Cr0  1  0.641  0.612  0.377  1.0
  Cr  Cr1  1  0.359  0.388  0.623  1.0
  Co  Co2  1  0.000  0.000  0.000  1.0
  Se  Se3  1  0.514  0.131  0.824  1.0
  Se  Se4  1  0.869  0.503  0.699  1.0
  Se  Se5  1  0.131  0.497  0.301  1.0
  Se  Se6  1  0.486  0.869  0.176  1.0
[/CIF]
.