The material structure described by Ba3Sr(CoO3)4 crystallizes in the triclinic P1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(11), one O(12), one O(9), two equivalent O(2), two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(3)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the second Ba site, Ba(2) is bonded to one O(5), one O(6), one O(7), one O(8), two equivalent O(1), two equivalent O(10), two equivalent O(3), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(3)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-15°. In the third Ba site, Ba(3) is bonded to one O(5), one O(6), one O(7), one O(8), two equivalent O(11), two equivalent O(12), two equivalent O(2), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-15°. Sr(1) is bonded to one O(10), one O(11), one O(12), one O(9), two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-16°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra,  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Co(3)O6 octahedra. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra,  a cornercorner with one Sr(1)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Co(4)O6 octahedra. In the third Co site, Co(3) is bonded to one O(11), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra,  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Co(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra,  a cornercorner with one Sr(1)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Co(2)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(2), two equivalent Sr(1), one Co(2), and one Co(4) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(3), one Co(1), and one Co(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ba(2), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(3), one Co(2), and one Co(4) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Ba(1), one Co(2), and one Co(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Ba(1), one Co(2), and one Co(4) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), one Co(2), and one Co(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), one Co(2), and one Co(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(3), one Sr(1), one Co(1), and one Co(3) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(3), one Sr(1), one Co(1), and one Co(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Sr(CoO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.830
_cell_length_b   5.674
_cell_length_c   9.821
_cell_angle_alpha   90.019
_cell_angle_beta   89.950
_cell_angle_gamma   89.531
_symmetry_Int_Tables_number   1
_cell_volume   269.174
_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  0.250  0.999  0.667  1.0
  Ba  Ba1  1  0.749  0.001  0.331  1.0
  Ba  Ba2  1  0.750  0.500  0.835  1.0
  Sr  Sr3  1  0.246  0.500  0.168  1.0
  Co  Co4  1  0.000  1.000  0.004  1.0
  Co  Co5  1  1.000  0.500  0.496  1.0
  Co  Co6  1  0.501  0.000  0.004  1.0
  Co  Co7  1  0.500  0.500  0.496  1.0
  O  O8  1  0.750  0.500  0.346  1.0
  O  O9  1  0.746  1.000  0.854  1.0
  O  O10  1  0.255  0.999  0.152  1.0
  O  O11  1  0.250  0.500  0.647  1.0
  O  O12  1  0.765  0.778  0.076  1.0
  O  O13  1  0.740  0.225  0.076  1.0
  O  O14  1  0.748  0.280  0.571  1.0
  O  O15  1  0.752  0.720  0.571  1.0
  O  O16  1  0.252  0.719  0.420  1.0
  O  O17  1  0.248  0.282  0.420  1.0
  O  O18  1  0.238  0.223  0.933  1.0
  O  O19  1  0.259  0.773  0.933  1.0
[/CIF]
.
The material structure described by Ba3Sr(CoO3)4 crystallizes in the triclinic P1 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one O(10), one O(11), one O(12), one O(9), two equivalent O(2), two equivalent O(4), two equivalent O(7), and two equivalent O(8) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Sr(1)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with four equivalent Ba(3)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(3)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-14°. In the second Ba site, Ba(2) is bonded to one O(5), one O(6), one O(7), one O(8), two equivalent O(1), two equivalent O(10), two equivalent O(3), and two equivalent O(9) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Ba(3)O12 cuboctahedra,  a cornercorner with one Co(1)O6 octahedra,  a cornercorner with one Co(3)O6 octahedra, corners with two equivalent Co(2)O6 octahedra, corners with two equivalent Co(4)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra,  a faceface with one Co(1)O6 octahedra,  a faceface with one Co(3)O6 octahedra, faces with two equivalent Co(2)O6 octahedra, and faces with two equivalent Co(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-15°. In the third Ba site, Ba(3) is bonded to one O(5), one O(6), one O(7), one O(8), two equivalent O(11), two equivalent O(12), two equivalent O(2), and two equivalent O(4) atoms to form BaO12 cuboctahedra that share corners with two equivalent Ba(3)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ba(1)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-15°. Sr(1) is bonded to one O(10), one O(11), one O(12), one O(9), two equivalent O(1), two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form distorted SrO12 cuboctahedra that share corners with two equivalent Sr(1)O12 cuboctahedra, corners with four equivalent Ba(1)O12 cuboctahedra,  a cornercorner with one Co(2)O6 octahedra,  a cornercorner with one Co(4)O6 octahedra, corners with two equivalent Co(1)O6 octahedra, corners with two equivalent Co(3)O6 octahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ba(2)O12 cuboctahedra,  a faceface with one Co(2)O6 octahedra,  a faceface with one Co(4)O6 octahedra, faces with two equivalent Co(1)O6 octahedra, and faces with two equivalent Co(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 11-16°. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(11), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra,  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Co(3)O6 octahedra. In the second Co site, Co(2) is bonded to one O(1), one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra,  a cornercorner with one Sr(1)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Co(4)O6 octahedra. In the third Co site, Co(3) is bonded to one O(11), one O(12), one O(2), one O(3), one O(5), and one O(6) atom to form CoO6 octahedra that share  a cornercorner with one Ba(1)O12 cuboctahedra,  a cornercorner with one Ba(2)O12 cuboctahedra, corners with two equivalent Ba(3)O12 cuboctahedra, corners with two equivalent Sr(1)O12 cuboctahedra,  a faceface with one Ba(1)O12 cuboctahedra,  a faceface with one Ba(2)O12 cuboctahedra, faces with two equivalent Ba(3)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Co(1)O6 octahedra. In the fourth Co site, Co(4) is bonded to one O(1), one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form CoO6 octahedra that share  a cornercorner with one Ba(3)O12 cuboctahedra,  a cornercorner with one Sr(1)O12 cuboctahedra, corners with two equivalent Ba(1)O12 cuboctahedra, corners with two equivalent Ba(2)O12 cuboctahedra,  a faceface with one Ba(3)O12 cuboctahedra,  a faceface with one Sr(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, and faces with two equivalent Co(2)O6 octahedra. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to two equivalent Ba(2), two equivalent Sr(1), one Co(2), and one Co(4) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(3), one Co(1), and one Co(3) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ba(2), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Ba(1), two equivalent Ba(3), one Co(2), and one Co(4) atom. In the fifth O site, O(5) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Sr(1), one Co(1), and one Co(3) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Ba(1), one Co(2), and one Co(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Ba(2), one Ba(3), two equivalent Ba(1), one Co(2), and one Co(4) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), one Co(2), and one Co(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(2), one Sr(1), one Co(2), and one Co(4) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(3), one Sr(1), one Co(1), and one Co(3) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Ba(1), two equivalent Ba(3), one Sr(1), one Co(1), and one Co(3) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba3Sr(CoO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.830
_cell_length_b   5.674
_cell_length_c   9.821
_cell_angle_alpha   90.019
_cell_angle_beta   89.950
_cell_angle_gamma   89.531
_symmetry_Int_Tables_number   1
_cell_volume   269.174
_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  0.250  0.999  0.667  1.0
  Ba  Ba1  1  0.749  0.001  0.331  1.0
  Ba  Ba2  1  0.750  0.500  0.835  1.0
  Sr  Sr3  1  0.246  0.500  0.168  1.0
  Co  Co4  1  0.000  1.000  0.004  1.0
  Co  Co5  1  1.000  0.500  0.496  1.0
  Co  Co6  1  0.501  0.000  0.004  1.0
  Co  Co7  1  0.500  0.500  0.496  1.0
  O  O8  1  0.750  0.500  0.346  1.0
  O  O9  1  0.746  1.000  0.854  1.0
  O  O10  1  0.255  0.999  0.152  1.0
  O  O11  1  0.250  0.500  0.647  1.0
  O  O12  1  0.765  0.778  0.076  1.0
  O  O13  1  0.740  0.225  0.076  1.0
  O  O14  1  0.748  0.280  0.571  1.0
  O  O15  1  0.752  0.720  0.571  1.0
  O  O16  1  0.252  0.719  0.420  1.0
  O  O17  1  0.248  0.282  0.420  1.0
  O  O18  1  0.238  0.223  0.933  1.0
  O  O19  1  0.259  0.773  0.933  1.0
[/CIF]
.