The structure described by Ba4Ti3O10 crystallizes in the orthorhombic Fmm2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with eight equivalent Ba(1)O12 cuboctahedra, faces with five equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Ti(2)O6 octahedra. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to four equivalent O(4) and five equivalent O(1) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 7-11°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), and four equivalent O(4) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Ti(2)O6 octahedra, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-11°. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ti(2) atoms. In the second O site, O(1) is bonded to five equivalent Ba(2) and one Ti(2) atom to form a mixture of distorted edge and corner-sharing OBa5Ti octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the third O site, O(2) is bonded in a distorted linear geometry to four equivalent Ba(1), one Ti(1), and one Ti(2) atom. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Ba(1) and two equivalent Ti(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba4Ti3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.973
_cell_length_b   14.970
_cell_length_c   4.096
_cell_angle_alpha   82.172
_cell_angle_beta   82.103
_cell_angle_gamma   15.726
_symmetry_Int_Tables_number   1
_cell_volume   246.466
_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
  Ba  Ba0  1  0.925  0.940  0.060  1.0
  Ba  Ba1  1  0.793  0.804  0.196  1.0
  Ba  Ba2  1  0.060  0.075  0.925  1.0
  Ba  Ba3  1  0.196  0.207  0.793  1.0
  Ti  Ti4  1  0.476  0.524  0.476  1.0
  Ti  Ti5  1  0.615  0.660  0.340  1.0
  Ti  Ti6  1  0.340  0.385  0.615  1.0
  O  O7  1  0.306  0.287  0.713  1.0
  O  O8  1  0.577  0.559  0.441  1.0
  O  O9  1  0.505  0.495  0.022  1.0
  O  O10  1  0.022  0.978  0.505  1.0
  O  O11  1  0.639  0.635  0.882  1.0
  O  O12  1  0.156  0.118  0.365  1.0
  O  O13  1  0.365  0.361  0.156  1.0
  O  O14  1  0.882  0.844  0.639  1.0
  O  O15  1  0.713  0.694  0.306  1.0
  O  O16  1  0.441  0.423  0.577  1.0
[/CIF]
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The structure described by Ba4Ti3O10 crystallizes in the orthorhombic Fmm2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(2), four equivalent O(3), and four equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with eight equivalent Ba(1)O12 cuboctahedra, faces with five equivalent Ba(1)O12 cuboctahedra, faces with four equivalent Ti(1)O6 octahedra, and faces with four equivalent Ti(2)O6 octahedra. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to four equivalent O(4) and five equivalent O(1) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(2)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, and faces with eight equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 7-11°. In the second Ti site, Ti(2) is bonded to one O(1), one O(2), and four equivalent O(4) atoms to form TiO6 octahedra that share  a cornercorner with one Ti(1)O6 octahedra, corners with four equivalent Ti(2)O6 octahedra, and faces with four equivalent Ba(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-11°. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 6-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ti(2) atoms. In the second O site, O(1) is bonded to five equivalent Ba(2) and one Ti(2) atom to form a mixture of distorted edge and corner-sharing OBa5Ti octahedra. The corner-sharing octahedral tilt angles range from 3-4°. In the third O site, O(2) is bonded in a distorted linear geometry to four equivalent Ba(1), one Ti(1), and one Ti(2) atom. In the fourth O site, O(3) is bonded in a 6-coordinate geometry to four equivalent Ba(1) and two equivalent Ti(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba4Ti3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.973
_cell_length_b   14.970
_cell_length_c   4.096
_cell_angle_alpha   82.172
_cell_angle_beta   82.103
_cell_angle_gamma   15.726
_symmetry_Int_Tables_number   1
_cell_volume   246.466
_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
  Ba  Ba0  1  0.925  0.940  0.060  1.0
  Ba  Ba1  1  0.793  0.804  0.196  1.0
  Ba  Ba2  1  0.060  0.075  0.925  1.0
  Ba  Ba3  1  0.196  0.207  0.793  1.0
  Ti  Ti4  1  0.476  0.524  0.476  1.0
  Ti  Ti5  1  0.615  0.660  0.340  1.0
  Ti  Ti6  1  0.340  0.385  0.615  1.0
  O  O7  1  0.306  0.287  0.713  1.0
  O  O8  1  0.577  0.559  0.441  1.0
  O  O9  1  0.505  0.495  0.022  1.0
  O  O10  1  0.022  0.978  0.505  1.0
  O  O11  1  0.639  0.635  0.882  1.0
  O  O12  1  0.156  0.118  0.365  1.0
  O  O13  1  0.365  0.361  0.156  1.0
  O  O14  1  0.882  0.844  0.639  1.0
  O  O15  1  0.713  0.694  0.306  1.0
  O  O16  1  0.441  0.423  0.577  1.0
[/CIF]
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