The structure described by Co4SbO8 crystallizes in the monoclinic C2/m space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra and corners with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. 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 corners with six equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Co(1)O4 tetrahedra and edges with four equivalent Co(2)O6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1) and two equivalent Co(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(1), two equivalent Co(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Sb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co4SbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.915
_cell_length_b   5.915
_cell_length_c   5.832
_cell_angle_alpha   61.202
_cell_angle_beta   61.202
_cell_angle_gamma   60.803
_symmetry_Int_Tables_number   1
_cell_volume   147.730
_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  0.382  0.382  0.889  1.0
  Co  Co1  1  0.618  0.618  0.111  1.0
  Co  Co2  1  0.000  0.500  0.500  1.0
  Co  Co3  1  0.500  0.000  0.500  1.0
  Sb  Sb4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.256  0.256  0.294  1.0
  O  O6  1  0.242  0.242  0.754  1.0
  O  O7  1  0.262  0.783  0.741  1.0
  O  O8  1  0.783  0.262  0.741  1.0
  O  O9  1  0.744  0.744  0.706  1.0
  O  O10  1  0.758  0.758  0.246  1.0
  O  O11  1  0.738  0.217  0.259  1.0
  O  O12  1  0.217  0.738  0.259  1.0
[/CIF]
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The structure described by Co4SbO8 crystallizes in the monoclinic C2/m space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form CoO4 tetrahedra that share corners with three equivalent Sb(1)O6 octahedra and corners with six equivalent Co(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. 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 corners with six equivalent Co(1)O4 tetrahedra, edges with two equivalent Co(2)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Co(1)O4 tetrahedra and edges with four equivalent Co(2)O6 octahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Co(1) and two equivalent Co(2) atoms. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(1), two equivalent Co(2), and one Sb(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Sb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co4SbO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.915
_cell_length_b   5.915
_cell_length_c   5.832
_cell_angle_alpha   61.202
_cell_angle_beta   61.202
_cell_angle_gamma   60.803
_symmetry_Int_Tables_number   1
_cell_volume   147.730
_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  0.382  0.382  0.889  1.0
  Co  Co1  1  0.618  0.618  0.111  1.0
  Co  Co2  1  0.000  0.500  0.500  1.0
  Co  Co3  1  0.500  0.000  0.500  1.0
  Sb  Sb4  1  0.000  0.000  0.000  1.0
  O  O5  1  0.256  0.256  0.294  1.0
  O  O6  1  0.242  0.242  0.754  1.0
  O  O7  1  0.262  0.783  0.741  1.0
  O  O8  1  0.783  0.262  0.741  1.0
  O  O9  1  0.744  0.744  0.706  1.0
  O  O10  1  0.758  0.758  0.246  1.0
  O  O11  1  0.738  0.217  0.259  1.0
  O  O12  1  0.217  0.738  0.259  1.0
[/CIF]
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