The material structure described by Ba4Ir3O10 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one O(4), two equivalent O(1), three equivalent O(2), and four equivalent O(3) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one O(2), two equivalent O(1), three equivalent O(4), and four equivalent O(3) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form face-sharing IrO6 octahedra. In the second Ir site, Ir(2) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of corner and face-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 12°. There are four inequivalent O sites. In the first O site, O(2) is bonded to one Ba(2), three equivalent Ba(1), and one Ir(2) atom to form distorted OBa4Ir trigonal bipyramids that share  a cornercorner with one O(4)Ba4Ir2 octahedra, corners with ten equivalent O(3)Ba4Ir2 octahedra, corners with two equivalent O(2)Ba4Ir trigonal bipyramids, edges with three equivalent O(4)Ba4Ir2 octahedra, edges with four equivalent O(3)Ba4Ir2 octahedra, and edges with two equivalent O(2)Ba4Ir trigonal bipyramids. The corner-sharing octahedral tilt angles range from 5-63°. In the second O site, O(3) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ir(1), and one Ir(2) atom to form distorted OBa4Ir2 octahedra that share corners with three equivalent O(3)Ba4Ir2 octahedra, corners with five equivalent O(4)Ba4Ir2 octahedra, corners with five equivalent O(2)Ba4Ir trigonal bipyramids, edges with two equivalent O(3)Ba4Ir2 octahedra, edges with two equivalent O(2)Ba4Ir trigonal bipyramids, faces with two equivalent O(4)Ba4Ir2 octahedra, and faces with three equivalent O(3)Ba4Ir2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the third O site, O(4) is bonded to one Ba(1), three equivalent Ba(2), one Ir(1), and one Ir(2) atom to form distorted OBa4Ir2 octahedra that share corners with three equivalent O(4)Ba4Ir2 octahedra, corners with ten equivalent O(3)Ba4Ir2 octahedra,  a cornercorner with one O(2)Ba4Ir trigonal bipyramid, edges with two equivalent O(4)Ba4Ir2 octahedra, edges with three equivalent O(2)Ba4Ir trigonal bipyramids, and faces with four equivalent O(3)Ba4Ir2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ir(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba4Ir3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.285
_cell_length_b   7.285
_cell_length_c   13.319
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.051
_symmetry_Int_Tables_number   1
_cell_volume   516.539
_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
  Ba  Ba0  1  0.243  0.757  0.880  1.0
  Ba  Ba1  1  0.757  0.243  0.120  1.0
  Ba  Ba2  1  0.257  0.743  0.380  1.0
  Ba  Ba3  1  0.743  0.257  0.620  1.0
  Ba  Ba4  1  0.539  0.461  0.861  1.0
  Ba  Ba5  1  0.461  0.539  0.139  1.0
  Ba  Ba6  1  0.039  0.961  0.639  1.0
  Ba  Ba7  1  0.961  0.039  0.361  1.0
  Ir  Ir8  1  0.000  0.000  0.000  1.0
  Ir  Ir9  1  0.500  0.500  0.500  1.0
  Ir  Ir10  1  0.879  0.121  0.851  1.0
  Ir  Ir11  1  0.121  0.879  0.149  1.0
  Ir  Ir12  1  0.621  0.379  0.351  1.0
  Ir  Ir13  1  0.379  0.621  0.649  1.0
  O  O14  1  0.144  0.356  0.750  1.0
  O  O15  1  0.356  0.144  0.250  1.0
  O  O16  1  0.856  0.644  0.250  1.0
  O  O17  1  0.644  0.856  0.750  1.0
  O  O18  1  0.232  0.768  0.662  1.0
  O  O19  1  0.768  0.232  0.338  1.0
  O  O20  1  0.268  0.732  0.162  1.0
  O  O21  1  0.732  0.268  0.838  1.0
  O  O22  1  0.383  0.158  0.467  1.0
  O  O23  1  0.158  0.383  0.533  1.0
  O  O24  1  0.117  0.342  0.967  1.0
  O  O25  1  0.342  0.117  0.033  1.0
  O  O26  1  0.617  0.842  0.533  1.0
  O  O27  1  0.842  0.617  0.467  1.0
  O  O28  1  0.039  0.961  0.852  1.0
  O  O29  1  0.961  0.039  0.148  1.0
  O  O30  1  0.461  0.539  0.352  1.0
  O  O31  1  0.539  0.461  0.648  1.0
  O  O32  1  0.658  0.883  0.967  1.0
  O  O33  1  0.883  0.658  0.033  1.0
[/CIF]
.
The material structure described by Ba4Ir3O10 crystallizes in the orthorhombic Cmce space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one O(4), two equivalent O(1), three equivalent O(2), and four equivalent O(3) atoms. In the second Ba site, Ba(2) is bonded in a 10-coordinate geometry to one O(2), two equivalent O(1), three equivalent O(4), and four equivalent O(3) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form face-sharing IrO6 octahedra. In the second Ir site, Ir(2) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of corner and face-sharing IrO6 octahedra. The corner-sharing octahedral tilt angles are 12°. There are four inequivalent O sites. In the first O site, O(2) is bonded to one Ba(2), three equivalent Ba(1), and one Ir(2) atom to form distorted OBa4Ir trigonal bipyramids that share  a cornercorner with one O(4)Ba4Ir2 octahedra, corners with ten equivalent O(3)Ba4Ir2 octahedra, corners with two equivalent O(2)Ba4Ir trigonal bipyramids, edges with three equivalent O(4)Ba4Ir2 octahedra, edges with four equivalent O(3)Ba4Ir2 octahedra, and edges with two equivalent O(2)Ba4Ir trigonal bipyramids. The corner-sharing octahedral tilt angles range from 5-63°. In the second O site, O(3) is bonded to two equivalent Ba(1), two equivalent Ba(2), one Ir(1), and one Ir(2) atom to form distorted OBa4Ir2 octahedra that share corners with three equivalent O(3)Ba4Ir2 octahedra, corners with five equivalent O(4)Ba4Ir2 octahedra, corners with five equivalent O(2)Ba4Ir trigonal bipyramids, edges with two equivalent O(3)Ba4Ir2 octahedra, edges with two equivalent O(2)Ba4Ir trigonal bipyramids, faces with two equivalent O(4)Ba4Ir2 octahedra, and faces with three equivalent O(3)Ba4Ir2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the third O site, O(4) is bonded to one Ba(1), three equivalent Ba(2), one Ir(1), and one Ir(2) atom to form distorted OBa4Ir2 octahedra that share corners with three equivalent O(4)Ba4Ir2 octahedra, corners with ten equivalent O(3)Ba4Ir2 octahedra,  a cornercorner with one O(2)Ba4Ir trigonal bipyramid, edges with two equivalent O(4)Ba4Ir2 octahedra, edges with three equivalent O(2)Ba4Ir trigonal bipyramids, and faces with four equivalent O(3)Ba4Ir2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fourth O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and two equivalent Ir(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba4Ir3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.285
_cell_length_b   7.285
_cell_length_c   13.319
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   133.051
_symmetry_Int_Tables_number   1
_cell_volume   516.539
_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
  Ba  Ba0  1  0.243  0.757  0.880  1.0
  Ba  Ba1  1  0.757  0.243  0.120  1.0
  Ba  Ba2  1  0.257  0.743  0.380  1.0
  Ba  Ba3  1  0.743  0.257  0.620  1.0
  Ba  Ba4  1  0.539  0.461  0.861  1.0
  Ba  Ba5  1  0.461  0.539  0.139  1.0
  Ba  Ba6  1  0.039  0.961  0.639  1.0
  Ba  Ba7  1  0.961  0.039  0.361  1.0
  Ir  Ir8  1  0.000  0.000  0.000  1.0
  Ir  Ir9  1  0.500  0.500  0.500  1.0
  Ir  Ir10  1  0.879  0.121  0.851  1.0
  Ir  Ir11  1  0.121  0.879  0.149  1.0
  Ir  Ir12  1  0.621  0.379  0.351  1.0
  Ir  Ir13  1  0.379  0.621  0.649  1.0
  O  O14  1  0.144  0.356  0.750  1.0
  O  O15  1  0.356  0.144  0.250  1.0
  O  O16  1  0.856  0.644  0.250  1.0
  O  O17  1  0.644  0.856  0.750  1.0
  O  O18  1  0.232  0.768  0.662  1.0
  O  O19  1  0.768  0.232  0.338  1.0
  O  O20  1  0.268  0.732  0.162  1.0
  O  O21  1  0.732  0.268  0.838  1.0
  O  O22  1  0.383  0.158  0.467  1.0
  O  O23  1  0.158  0.383  0.533  1.0
  O  O24  1  0.117  0.342  0.967  1.0
  O  O25  1  0.342  0.117  0.033  1.0
  O  O26  1  0.617  0.842  0.533  1.0
  O  O27  1  0.842  0.617  0.467  1.0
  O  O28  1  0.039  0.961  0.852  1.0
  O  O29  1  0.961  0.039  0.148  1.0
  O  O30  1  0.461  0.539  0.352  1.0
  O  O31  1  0.539  0.461  0.648  1.0
  O  O32  1  0.658  0.883  0.967  1.0
  O  O33  1  0.883  0.658  0.033  1.0
[/CIF]
.