The crystal structure described by La2Ti2CoO8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), two equivalent O(4), and five equivalent O(2) atoms. In the second La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), two equivalent O(4), and five equivalent O(2) atoms. Ti(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Co(1) is bonded to four equivalent O(1) atoms to form distorted corner-sharing CoO4 trigonal pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ti(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to five La(1,1) and one Ti(1) atom. In the third O site, O(3) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2Ti2CoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.719
_cell_length_b   3.719
_cell_length_c   12.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.001
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.667
_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  0.500  0.500  0.000  1.0
  La  La1  1  0.000  0.500  0.614  1.0
  La  La2  1  0.500  1.000  0.386  1.0
  O  O3  1  1.000  0.500  0.066  1.0
  O  O4  1  0.500  1.000  0.934  1.0
  O  O5  1  0.000  0.500  0.427  1.0
  O  O6  1  0.500  1.000  0.573  1.0
  O  O7  1  0.500  0.500  0.751  1.0
  O  O8  1  0.500  0.500  0.249  1.0
  O  O9  1  1.000  1.000  0.252  1.0
  O  O10  1  0.000  0.000  0.748  1.0
  Ti  Ti11  1  0.000  0.500  0.208  1.0
  Ti  Ti12  1  0.500  1.000  0.792  1.0
[/CIF]
.
The crystal structure described by La2Ti2CoO8 crystallizes in the tetragonal P-4m2 space group. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), two equivalent O(4), and five equivalent O(2) atoms. In the second La site, La(1) is bonded in a 9-coordinate geometry to two equivalent O(3), two equivalent O(4), and five equivalent O(2) atoms. Ti(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Co(1) is bonded to four equivalent O(1) atoms to form distorted corner-sharing CoO4 trigonal pyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ti(1) and two equivalent Co(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to five La(1,1) and one Ti(1) atom. In the third O site, O(3) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent La(1) and two equivalent Ti(1) atoms to form a mixture of distorted corner and edge-sharing OLa2Ti2 trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2Ti2CoO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.719
_cell_length_b   3.719
_cell_length_c   12.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.001
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   176.667
_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  0.500  0.500  0.000  1.0
  La  La1  1  0.000  0.500  0.614  1.0
  La  La2  1  0.500  1.000  0.386  1.0
  O  O3  1  1.000  0.500  0.066  1.0
  O  O4  1  0.500  1.000  0.934  1.0
  O  O5  1  0.000  0.500  0.427  1.0
  O  O6  1  0.500  1.000  0.573  1.0
  O  O7  1  0.500  0.500  0.751  1.0
  O  O8  1  0.500  0.500  0.249  1.0
  O  O9  1  1.000  1.000  0.252  1.0
  O  O10  1  0.000  0.000  0.748  1.0
  Ti  Ti11  1  0.000  0.500  0.208  1.0
  Ti  Ti12  1  0.500  1.000  0.792  1.0
[/CIF]
.