The structure described by MgCo3TeO8 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Te(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form CoO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Te(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. Te(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TeO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Co(1), one Co(2), and one Te(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), two equivalent Co(2), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Co(1) and two equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_MgCo3TeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.995
_cell_length_b   5.991
_cell_length_c   6.073
_cell_angle_alpha   59.703
_cell_angle_beta   120.319
_cell_angle_gamma   121.310
_symmetry_Int_Tables_number   1
_cell_volume   151.960
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Co  Co1  1  0.500  0.500  0.000  1.0
  Co  Co2  1  0.500  0.000  0.000  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Te  Te4  1  0.500  0.500  0.500  1.0
  O  O5  1  0.738  0.725  0.745  1.0
  O  O6  1  0.736  0.264  0.746  1.0
  O  O7  1  0.262  0.737  0.815  1.0
  O  O8  1  0.275  0.262  0.745  1.0
  O  O9  1  0.725  0.738  0.255  1.0
  O  O10  1  0.738  0.263  0.185  1.0
  O  O11  1  0.264  0.736  0.254  1.0
  O  O12  1  0.262  0.275  0.255  1.0
[/CIF]
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The structure described by MgCo3TeO8 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form MgO6 octahedra that share corners with six equivalent Te(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(3) and four equivalent O(1) atoms to form CoO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Te(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form CoO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Te(1)O6 octahedra. Te(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form TeO6 octahedra that share corners with six equivalent Mg(1)O6 octahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles are 3°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one Co(1), one Co(2), and one Te(1) atom. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), two equivalent Co(2), and one Te(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Co(1) and two equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_MgCo3TeO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.995
_cell_length_b   5.991
_cell_length_c   6.073
_cell_angle_alpha   59.703
_cell_angle_beta   120.319
_cell_angle_gamma   121.310
_symmetry_Int_Tables_number   1
_cell_volume   151.960
_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
  Mg  Mg0  1  0.000  0.000  0.000  1.0
  Co  Co1  1  0.500  0.500  0.000  1.0
  Co  Co2  1  0.500  0.000  0.000  1.0
  Co  Co3  1  0.000  0.500  0.000  1.0
  Te  Te4  1  0.500  0.500  0.500  1.0
  O  O5  1  0.738  0.725  0.745  1.0
  O  O6  1  0.736  0.264  0.746  1.0
  O  O7  1  0.262  0.737  0.815  1.0
  O  O8  1  0.275  0.262  0.745  1.0
  O  O9  1  0.725  0.738  0.255  1.0
  O  O10  1  0.738  0.263  0.185  1.0
  O  O11  1  0.264  0.736  0.254  1.0
  O  O12  1  0.262  0.275  0.255  1.0
[/CIF]
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