The crystal structure described by Co4TeO8 is beta indium sulfide-derived structured and crystallizes in the monoclinic C2/m space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(4) and four equivalent O(5) atoms to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Te(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-22°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(6) atoms to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Te(2)O6 octahedra, and edges with four equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-18°. In the third Co site, Co(3) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-22°. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form CoO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Te(2)O6 octahedra. In the fifth Co site, Co(5) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(2) and four equivalent O(5) atoms to form TeO6 octahedra that share edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. In the second Te site, Te(2) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form TeO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with four equivalent Co(4)O6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Co(4) and one Te(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Co(5) and one Te(1) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Co(2), one Co(3), and two equivalent Co(4) atoms. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Co(1), one Co(3), and two equivalent Co(5) atoms. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(3), one Co(5), and one Te(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(4), and one Te(2) atom. is represented by the CIF file [CIF]
data_Co4TeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.971
_cell_length_b   5.973
_cell_length_c   6.044
_cell_angle_alpha   116.850
_cell_angle_beta   93.732
_cell_angle_gamma   118.484
_symmetry_Int_Tables_number   1
_cell_volume   157.860
_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
  Co  Co0  1  0.000  1.000  1.000  1.0
  Co  Co1  1  0.500  0.000  0.500  1.0
  Co  Co2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.265  0.482  0.747  1.0
  O  O5  1  0.735  0.518  0.253  1.0
  O  O6  1  0.749  0.942  0.691  1.0
  O  O7  1  0.251  0.058  0.309  1.0
  O  O8  1  0.735  0.952  0.231  1.0
  O  O9  1  0.279  0.496  0.231  1.0
  O  O10  1  0.265  0.048  0.769  1.0
  O  O11  1  0.721  0.504  0.769  1.0
  Te  Te12  1  0.500  0.500  1.000  1.0
[/CIF]
.
The crystal structure described by Co4TeO8 is beta indium sulfide-derived structured and crystallizes in the monoclinic C2/m space group. There are five inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(4) and four equivalent O(5) atoms to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Te(1)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-22°. In the second Co site, Co(2) is bonded to two equivalent O(3) and four equivalent O(6) atoms to form CoO6 octahedra that share corners with six equivalent Co(3)O6 octahedra, edges with two equivalent Te(2)O6 octahedra, and edges with four equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-18°. In the third Co site, Co(3) is bonded to one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with three equivalent Co(1)O6 octahedra, corners with three equivalent Co(2)O6 octahedra,  an edgeedge with one Te(1)O6 octahedra,  an edgeedge with one Te(2)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Co(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-22°. In the fourth Co site, Co(4) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(6) atoms to form CoO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Te(2)O6 octahedra. In the fifth Co site, Co(5) is bonded to two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms to form CoO6 octahedra that share edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, edges with two equivalent Co(5)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent O(2) and four equivalent O(5) atoms to form TeO6 octahedra that share edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with four equivalent Co(5)O6 octahedra. In the second Te site, Te(2) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form TeO6 octahedra that share edges with two equivalent Co(2)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with four equivalent Co(4)O6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to two equivalent Co(4) and one Te(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to two equivalent Co(5) and one Te(1) atom. In the third O site, O(3) is bonded in a see-saw-like geometry to one Co(2), one Co(3), and two equivalent Co(4) atoms. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Co(1), one Co(3), and two equivalent Co(5) atoms. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(3), one Co(5), and one Te(1) atom. In the sixth O site, O(6) is bonded in a rectangular see-saw-like geometry to one Co(2), one Co(3), one Co(4), and one Te(2) atom. is represented by the CIF file [CIF]
data_Co4TeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.971
_cell_length_b   5.973
_cell_length_c   6.044
_cell_angle_alpha   116.850
_cell_angle_beta   93.732
_cell_angle_gamma   118.484
_symmetry_Int_Tables_number   1
_cell_volume   157.860
_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
  Co  Co0  1  0.000  1.000  1.000  1.0
  Co  Co1  1  0.500  0.000  0.500  1.0
  Co  Co2  1  0.500  0.500  0.500  1.0
  Co  Co3  1  0.000  0.000  0.500  1.0
  O  O4  1  0.265  0.482  0.747  1.0
  O  O5  1  0.735  0.518  0.253  1.0
  O  O6  1  0.749  0.942  0.691  1.0
  O  O7  1  0.251  0.058  0.309  1.0
  O  O8  1  0.735  0.952  0.231  1.0
  O  O9  1  0.279  0.496  0.231  1.0
  O  O10  1  0.265  0.048  0.769  1.0
  O  O11  1  0.721  0.504  0.769  1.0
  Te  Te12  1  0.500  0.500  1.000  1.0
[/CIF]
.