The compound described by Co2AlO4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Al(1)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CoO4 tetrahedra that share corners with six equivalent Co(1)O6 octahedra and corners with six equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-63°. Al(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form AlO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Al(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), and two equivalent Al(1) atoms to form a mixture of distorted edge and corner-sharing OAl2Co2 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Al(1) atom. is represented by the CIF file [CIF]
data_Al(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.813
_cell_length_b   5.813
_cell_length_c   5.813
_cell_angle_alpha   119.594
_cell_angle_beta   118.828
_cell_angle_gamma   91.374
_symmetry_Int_Tables_number   1
_cell_volume   140.498
_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
  Al  Al0  1  0.500  0.500  0.500  1.0
  Al  Al1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.500  0.000  0.500  1.0
  Co  Co3  1  0.122  0.372  0.750  1.0
  Co  Co4  1  0.000  0.000  0.000  1.0
  Co  Co5  1  0.878  0.628  0.250  1.0
  O  O6  1  0.293  0.762  0.532  1.0
  O  O7  1  0.730  0.762  0.968  1.0
  O  O8  1  0.732  0.216  0.984  1.0
  O  O9  1  0.732  0.747  0.516  1.0
  O  O10  1  0.268  0.253  0.484  1.0
  O  O11  1  0.268  0.784  0.016  1.0
  O  O12  1  0.707  0.238  0.468  1.0
  O  O13  1  0.270  0.238  0.032  1.0
[/CIF]
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The compound described by Co2AlO4 is Spinel-like structured and crystallizes in the orthorhombic Imma space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CoO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Co(1)O6 octahedra, and edges with four equivalent Al(1)O6 octahedra. In the second Co site, Co(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form CoO4 tetrahedra that share corners with six equivalent Co(1)O6 octahedra and corners with six equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-63°. Al(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form AlO6 octahedra that share corners with six equivalent Co(2)O4 tetrahedra, edges with two equivalent Al(1)O6 octahedra, and edges with four equivalent Co(1)O6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Co(1), one Co(2), and two equivalent Al(1) atoms to form a mixture of distorted edge and corner-sharing OAl2Co2 trigonal pyramids. In the second O site, O(2) is bonded in a rectangular see-saw-like geometry to one Co(2), two equivalent Co(1), and one Al(1) atom. is represented by the CIF file [CIF]
data_Al(CoO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.813
_cell_length_b   5.813
_cell_length_c   5.813
_cell_angle_alpha   119.594
_cell_angle_beta   118.828
_cell_angle_gamma   91.374
_symmetry_Int_Tables_number   1
_cell_volume   140.498
_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
  Al  Al0  1  0.500  0.500  0.500  1.0
  Al  Al1  1  0.500  0.000  0.000  1.0
  Co  Co2  1  0.500  0.000  0.500  1.0
  Co  Co3  1  0.122  0.372  0.750  1.0
  Co  Co4  1  0.000  0.000  0.000  1.0
  Co  Co5  1  0.878  0.628  0.250  1.0
  O  O6  1  0.293  0.762  0.532  1.0
  O  O7  1  0.730  0.762  0.968  1.0
  O  O8  1  0.732  0.216  0.984  1.0
  O  O9  1  0.732  0.747  0.516  1.0
  O  O10  1  0.268  0.253  0.484  1.0
  O  O11  1  0.268  0.784  0.016  1.0
  O  O12  1  0.707  0.238  0.468  1.0
  O  O13  1  0.270  0.238  0.032  1.0
[/CIF]
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