The compound described by Co8Te(AsO8)2 crystallizes in the orthorhombic Cmce space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the second Co site, Co(2) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with three equivalent Co(4)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, and  a cornercorner with one As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-63°. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fourth Co site, Co(4) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with three equivalent Co(2)O4 tetrahedra, corners with three equivalent As(1)O4 tetrahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. As(1) is bonded to one O(3), one O(4), and two equivalent O(6) atoms to form AsO4 tetrahedra that share corners with three equivalent Co(4)O6 octahedra, corners with four equivalent Co(3)O6 octahedra, and  a cornercorner with one Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-55°. Te(1) is bonded to two equivalent O(5) and four equivalent O(1) atoms to form TeO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(4)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(4), and one Te(1) atom. In the second O site, O(2) is bonded to one Co(4), two equivalent Co(1), and two equivalent Co(3) atoms to form edge-sharing OCo5 square pyramids. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(3) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(2), one Co(4), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co8Te(AsO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.314
_cell_length_b   12.314
_cell_length_c   8.704
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   151.602
_symmetry_Int_Tables_number   1
_cell_volume   627.750
_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
  Co  Co0  1  0.677  0.823  0.750  1.0
  Co  Co1  1  0.059  0.941  0.628  1.0
  Co  Co2  1  0.443  0.057  0.250  1.0
  Co  Co3  1  0.864  0.136  0.028  1.0
  Co  Co4  1  0.559  0.441  0.872  1.0
  Co  Co5  1  0.941  0.059  0.372  1.0
  Co  Co6  1  0.136  0.864  0.972  1.0
  Co  Co7  1  0.823  0.677  0.250  1.0
  Co  Co8  1  0.323  0.177  0.250  1.0
  Co  Co9  1  0.943  0.557  0.250  1.0
  Co  Co10  1  0.441  0.559  0.128  1.0
  Co  Co11  1  0.057  0.443  0.750  1.0
  Co  Co12  1  0.557  0.943  0.750  1.0
  Co  Co13  1  0.636  0.364  0.528  1.0
  Co  Co14  1  0.177  0.323  0.750  1.0
  Co  Co15  1  0.364  0.636  0.472  1.0
  Te  Te16  1  0.000  0.000  0.000  1.0
  Te  Te17  1  0.500  0.500  0.500  1.0
  As  As18  1  0.691  0.309  0.891  1.0
  As  As19  1  0.191  0.809  0.609  1.0
  As  As20  1  0.309  0.691  0.109  1.0
  As  As21  1  0.809  0.191  0.391  1.0
  O  O22  1  0.835  0.717  0.996  1.0
  O  O23  1  0.631  0.369  0.285  1.0
  O  O24  1  0.165  0.283  0.004  1.0
  O  O25  1  0.748  0.252  0.770  1.0
  O  O26  1  0.132  0.868  0.732  1.0
  O  O27  1  0.248  0.752  0.730  1.0
  O  O28  1  0.335  0.217  0.504  1.0
  O  O29  1  0.008  0.992  0.226  1.0
  O  O30  1  0.454  0.081  0.004  1.0
  O  O31  1  0.369  0.631  0.715  1.0
  O  O32  1  0.508  0.492  0.274  1.0
  O  O33  1  0.546  0.919  0.996  1.0
  O  O34  1  0.581  0.954  0.504  1.0
  O  O35  1  0.046  0.419  0.504  1.0
  O  O36  1  0.081  0.454  0.996  1.0
  O  O37  1  0.492  0.508  0.726  1.0
  O  O38  1  0.217  0.335  0.496  1.0
  O  O39  1  0.868  0.132  0.268  1.0
  O  O40  1  0.752  0.248  0.270  1.0
  O  O41  1  0.283  0.165  0.996  1.0
  O  O42  1  0.632  0.368  0.768  1.0
  O  O43  1  0.717  0.835  0.004  1.0
  O  O44  1  0.665  0.783  0.496  1.0
  O  O45  1  0.131  0.869  0.215  1.0
  O  O46  1  0.992  0.008  0.774  1.0
  O  O47  1  0.954  0.581  0.496  1.0
  O  O48  1  0.919  0.546  0.004  1.0
  O  O49  1  0.783  0.665  0.504  1.0
  O  O50  1  0.419  0.046  0.496  1.0
  O  O51  1  0.252  0.748  0.230  1.0
  O  O52  1  0.368  0.632  0.232  1.0
  O  O53  1  0.869  0.131  0.785  1.0
[/CIF]
.
The compound described by Co8Te(AsO8)2 crystallizes in the orthorhombic Cmce space group. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form CoO6 octahedra that share corners with two equivalent Co(3)O6 octahedra, corners with four equivalent Co(2)O4 tetrahedra,  an edgeedge with one Co(3)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(4)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the second Co site, Co(2) is bonded to one O(4), one O(5), and two equivalent O(1) atoms to form CoO4 tetrahedra that share corners with three equivalent Co(4)O6 octahedra, corners with three equivalent Te(1)O6 octahedra, corners with four equivalent Co(1)O6 octahedra, and  a cornercorner with one As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 54-63°. In the third Co site, Co(3) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with two equivalent Co(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra,  an edgeedge with one Co(1)O6 octahedra, edges with two equivalent Co(3)O6 octahedra, and edges with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fourth Co site, Co(4) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(6) atoms to form CoO6 octahedra that share corners with three equivalent Co(2)O4 tetrahedra, corners with three equivalent As(1)O4 tetrahedra,  an edgeedge with one Te(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with two equivalent Co(3)O6 octahedra. As(1) is bonded to one O(3), one O(4), and two equivalent O(6) atoms to form AsO4 tetrahedra that share corners with three equivalent Co(4)O6 octahedra, corners with four equivalent Co(3)O6 octahedra, and  a cornercorner with one Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 52-55°. Te(1) is bonded to two equivalent O(5) and four equivalent O(1) atoms to form TeO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(4)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(4), and one Te(1) atom. In the second O site, O(2) is bonded to one Co(4), two equivalent Co(1), and two equivalent Co(3) atoms to form edge-sharing OCo5 square pyramids. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Co(3) and one As(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Co(2), one Co(4), and one As(1) atom. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Te(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Co(3), one Co(4), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co8Te(AsO8)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.314
_cell_length_b   12.314
_cell_length_c   8.704
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   151.602
_symmetry_Int_Tables_number   1
_cell_volume   627.750
_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
  Co  Co0  1  0.677  0.823  0.750  1.0
  Co  Co1  1  0.059  0.941  0.628  1.0
  Co  Co2  1  0.443  0.057  0.250  1.0
  Co  Co3  1  0.864  0.136  0.028  1.0
  Co  Co4  1  0.559  0.441  0.872  1.0
  Co  Co5  1  0.941  0.059  0.372  1.0
  Co  Co6  1  0.136  0.864  0.972  1.0
  Co  Co7  1  0.823  0.677  0.250  1.0
  Co  Co8  1  0.323  0.177  0.250  1.0
  Co  Co9  1  0.943  0.557  0.250  1.0
  Co  Co10  1  0.441  0.559  0.128  1.0
  Co  Co11  1  0.057  0.443  0.750  1.0
  Co  Co12  1  0.557  0.943  0.750  1.0
  Co  Co13  1  0.636  0.364  0.528  1.0
  Co  Co14  1  0.177  0.323  0.750  1.0
  Co  Co15  1  0.364  0.636  0.472  1.0
  Te  Te16  1  0.000  0.000  0.000  1.0
  Te  Te17  1  0.500  0.500  0.500  1.0
  As  As18  1  0.691  0.309  0.891  1.0
  As  As19  1  0.191  0.809  0.609  1.0
  As  As20  1  0.309  0.691  0.109  1.0
  As  As21  1  0.809  0.191  0.391  1.0
  O  O22  1  0.835  0.717  0.996  1.0
  O  O23  1  0.631  0.369  0.285  1.0
  O  O24  1  0.165  0.283  0.004  1.0
  O  O25  1  0.748  0.252  0.770  1.0
  O  O26  1  0.132  0.868  0.732  1.0
  O  O27  1  0.248  0.752  0.730  1.0
  O  O28  1  0.335  0.217  0.504  1.0
  O  O29  1  0.008  0.992  0.226  1.0
  O  O30  1  0.454  0.081  0.004  1.0
  O  O31  1  0.369  0.631  0.715  1.0
  O  O32  1  0.508  0.492  0.274  1.0
  O  O33  1  0.546  0.919  0.996  1.0
  O  O34  1  0.581  0.954  0.504  1.0
  O  O35  1  0.046  0.419  0.504  1.0
  O  O36  1  0.081  0.454  0.996  1.0
  O  O37  1  0.492  0.508  0.726  1.0
  O  O38  1  0.217  0.335  0.496  1.0
  O  O39  1  0.868  0.132  0.268  1.0
  O  O40  1  0.752  0.248  0.270  1.0
  O  O41  1  0.283  0.165  0.996  1.0
  O  O42  1  0.632  0.368  0.768  1.0
  O  O43  1  0.717  0.835  0.004  1.0
  O  O44  1  0.665  0.783  0.496  1.0
  O  O45  1  0.131  0.869  0.215  1.0
  O  O46  1  0.992  0.008  0.774  1.0
  O  O47  1  0.954  0.581  0.496  1.0
  O  O48  1  0.919  0.546  0.004  1.0
  O  O49  1  0.783  0.665  0.504  1.0
  O  O50  1  0.419  0.046  0.496  1.0
  O  O51  1  0.252  0.748  0.230  1.0
  O  O52  1  0.368  0.632  0.232  1.0
  O  O53  1  0.869  0.131  0.785  1.0
[/CIF]
.