The structure described by Co7O12 crystallizes in the triclinic P1 space group. There are seven inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 14°. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(4), one O(5), and one O(9) atom. In the third Co site, Co(3) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 20°. In the fourth Co site, Co(4) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form a mixture of distorted corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 13-20°. In the fifth Co site, Co(5) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 13°. In the sixth Co site, Co(6) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 18°. In the seventh Co site, Co(7) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 14°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the fourth O site, O(4) is bonded in a trigonal pyramidal geometry to one Co(1), one Co(2), one Co(5), and one Co(7) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(1), one Co(5), and one Co(7) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the tenth O site, O(10) is bonded in a T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(5), and one Co(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co7O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.990
_cell_length_b   4.968
_cell_length_c   9.736
_cell_angle_alpha   84.214
_cell_angle_beta   98.075
_cell_angle_gamma   57.925
_symmetry_Int_Tables_number   1
_cell_volume   198.021
_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  0.071  0.080  0.248  1.0
  Co  Co1  1  0.044  0.550  0.972  1.0
  Co  Co2  1  0.254  0.238  0.752  1.0
  Co  Co3  1  0.540  0.000  0.517  1.0
  Co  Co4  1  0.415  0.413  0.254  1.0
  Co  Co5  1  0.568  0.572  0.746  1.0
  Co  Co6  1  0.747  0.747  0.250  1.0
  O  O7  1  0.966  0.260  0.866  1.0
  O  O8  1  0.245  0.970  0.632  1.0
  O  O9  1  0.160  0.356  0.362  1.0
  O  O10  1  0.356  0.156  0.143  1.0
  O  O11  1  0.317  0.507  0.861  1.0
  O  O12  1  0.492  0.308  0.645  1.0
  O  O13  1  0.458  0.722  0.353  1.0
  O  O14  1  0.705  0.454  0.152  1.0
  O  O15  1  0.598  0.849  0.859  1.0
  O  O16  1  0.837  0.607  0.637  1.0
  O  O17  1  0.789  0.014  0.363  1.0
  O  O18  1  0.016  0.774  0.138  1.0
[/CIF]
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The structure described by Co7O12 crystallizes in the triclinic P1 space group. There are seven inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 14°. In the second Co site, Co(2) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(4), one O(5), and one O(9) atom. In the third Co site, Co(3) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 20°. In the fourth Co site, Co(4) is bonded to one O(10), one O(11), one O(2), one O(3), one O(6), and one O(7) atom to form a mixture of distorted corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles range from 13-20°. In the fifth Co site, Co(5) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 13°. In the sixth Co site, Co(6) is bonded to one O(1), one O(10), one O(2), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 18°. In the seventh Co site, Co(7) is bonded to one O(11), one O(12), one O(3), one O(4), one O(7), and one O(8) atom to form a mixture of corner and edge-sharing CoO6 octahedra. The corner-sharing octahedral tilt angles are 14°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the fourth O site, O(4) is bonded in a trigonal pyramidal geometry to one Co(1), one Co(2), one Co(5), and one Co(7) atom. In the fifth O site, O(5) is bonded in a T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the seventh O site, O(7) is bonded in a distorted rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Co(1), one Co(5), and one Co(7) atom. In the ninth O site, O(9) is bonded in a T-shaped geometry to one Co(2), one Co(3), and one Co(6) atom. In the tenth O site, O(10) is bonded in a T-shaped geometry to one Co(3), one Co(4), and one Co(6) atom. In the eleventh O site, O(11) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(4), one Co(5), and one Co(7) atom. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to one Co(1), one Co(2), one Co(5), and one Co(7) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Co7O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.990
_cell_length_b   4.968
_cell_length_c   9.736
_cell_angle_alpha   84.214
_cell_angle_beta   98.075
_cell_angle_gamma   57.925
_symmetry_Int_Tables_number   1
_cell_volume   198.021
_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  0.071  0.080  0.248  1.0
  Co  Co1  1  0.044  0.550  0.972  1.0
  Co  Co2  1  0.254  0.238  0.752  1.0
  Co  Co3  1  0.540  0.000  0.517  1.0
  Co  Co4  1  0.415  0.413  0.254  1.0
  Co  Co5  1  0.568  0.572  0.746  1.0
  Co  Co6  1  0.747  0.747  0.250  1.0
  O  O7  1  0.966  0.260  0.866  1.0
  O  O8  1  0.245  0.970  0.632  1.0
  O  O9  1  0.160  0.356  0.362  1.0
  O  O10  1  0.356  0.156  0.143  1.0
  O  O11  1  0.317  0.507  0.861  1.0
  O  O12  1  0.492  0.308  0.645  1.0
  O  O13  1  0.458  0.722  0.353  1.0
  O  O14  1  0.705  0.454  0.152  1.0
  O  O15  1  0.598  0.849  0.859  1.0
  O  O16  1  0.837  0.607  0.637  1.0
  O  O17  1  0.789  0.014  0.363  1.0
  O  O18  1  0.016  0.774  0.138  1.0
[/CIF]
.