The material described by Ba6La2Co4O15 crystallizes in the monoclinic Cc space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms to form BaO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Co(3)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, and faces with two equivalent Ba(1)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(1), one O(13), one O(14), one O(15), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(1)O6 octahedra,  a faceface with one Co(2)O4 tetrahedra,  a faceface with one Co(3)O4 tetrahedra, and  a faceface with one Co(4)O4 tetrahedra. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(13), one O(15), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(12), one O(14), one O(2), one O(7), one O(8), two equivalent O(11), and two equivalent O(5) atoms. In the fifth Ba site, Ba(5) is bonded in a 10-coordinate geometry to one O(1), one O(12), one O(15), one O(3), one O(4), one O(6), two equivalent O(10), and two equivalent O(9) atoms. In the sixth Ba site, Ba(6) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(14), one O(15), two equivalent O(1), two equivalent O(5), and two equivalent O(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(14), one O(15), one O(2), and one O(3) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra, and faces with two equivalent Ba(2)O12 cuboctahedra. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(4), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 10-68°. In the third Co site, Co(3) is bonded to one O(10), one O(15), one O(6), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 10-68°. In the fourth Co site, Co(4) is bonded to one O(11), one O(14), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-65°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded to one Ba(2), one Ba(4), one Ba(5), two equivalent La(2), and one Co(1) atom to form distorted OBa3La2Co octahedra that share corners with two equivalent O(1)Ba3La2Co octahedra,  a faceface with one O(2)Ba4LaCo octahedra, and  a faceface with one O(3)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles are 33°. In the second O site, O(2) is bonded to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(1) atom to form distorted OBa4LaCo octahedra that share corners with two equivalent O(3)Ba4LaCo octahedra,  a faceface with one O(1)Ba3La2Co octahedra, and  a faceface with one O(3)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles range from 34-37°. In the third O site, O(3) is bonded to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(1) atom to form distorted OBa4LaCo octahedra that share corners with two equivalent O(2)Ba4LaCo octahedra,  a faceface with one O(1)Ba3La2Co octahedra, and  a faceface with one O(2)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles range from 34-37°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(4), two equivalent La(2), and one Co(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(3) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(4) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(5), two equivalent La(2), and one Co(3) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(6), two equivalent Ba(1), two equivalent Ba(5), and one Co(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Ba(6), two equivalent Ba(1), two equivalent Ba(4), and one Co(4) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Ba(4), one Ba(5), one Ba(6), two equivalent Ba(1), and one Co(2) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(6), one La(1), one Co(1), and one Co(2) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one La(1), one La(2), one Co(1), and one Co(4) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one La(2), one Co(1), and one Co(3) atom. is represented by the CIF card [CIF]
data_Ba6La2Co4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.937
_cell_length_b   11.937
_cell_length_c   7.135
_cell_angle_alpha   89.370
_cell_angle_beta   89.370
_cell_angle_gamma   119.487
_symmetry_Int_Tables_number   1
_cell_volume   884.748
_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  0.000  0.001  0.503  1.0
  Ba  Ba1  1  0.001  0.000  0.003  1.0
  Ba  Ba2  1  0.334  0.665  0.026  1.0
  Ba  Ba3  1  0.665  0.334  0.526  1.0
  Ba  Ba4  1  0.522  0.047  0.173  1.0
  Ba  Ba5  1  0.047  0.522  0.673  1.0
  Ba  Ba6  1  0.820  0.646  0.838  1.0
  Ba  Ba7  1  0.354  0.177  0.839  1.0
  Ba  Ba8  1  0.819  0.177  0.836  1.0
  Ba  Ba9  1  0.177  0.354  0.339  1.0
  Ba  Ba10  1  0.646  0.820  0.338  1.0
  Ba  Ba11  1  0.177  0.819  0.336  1.0
  La  La12  1  0.952  0.475  0.179  1.0
  La  La13  1  0.523  0.478  0.169  1.0
  La  La14  1  0.475  0.952  0.679  1.0
  La  La15  1  0.478  0.523  0.669  1.0
  Co  Co16  1  0.663  0.330  0.988  1.0
  Co  Co17  1  0.330  0.663  0.488  1.0
  Co  Co18  1  0.169  0.816  0.838  1.0
  Co  Co19  1  0.175  0.354  0.845  1.0
  Co  Co20  1  0.649  0.823  0.838  1.0
  Co  Co21  1  0.816  0.169  0.338  1.0
  Co  Co22  1  0.823  0.649  0.338  1.0
  Co  Co23  1  0.354  0.175  0.345  1.0
  O  O24  1  0.416  0.586  0.338  1.0
  O  O25  1  0.410  0.818  0.348  1.0
  O  O26  1  0.165  0.582  0.322  1.0
  O  O27  1  0.586  0.416  0.838  1.0
  O  O28  1  0.582  0.165  0.822  1.0
  O  O29  1  0.818  0.410  0.848  1.0
  O  O30  1  0.928  0.325  0.457  1.0
  O  O31  1  0.665  0.604  0.470  1.0
  O  O32  1  0.392  0.072  0.487  1.0
  O  O33  1  0.928  0.605  0.461  1.0
  O  O34  1  0.676  0.067  0.486  1.0
  O  O35  1  0.401  0.334  0.472  1.0
  O  O36  1  0.067  0.676  0.986  1.0
  O  O37  1  0.334  0.401  0.972  1.0
  O  O38  1  0.605  0.928  0.961  1.0
  O  O39  1  0.072  0.392  0.987  1.0
  O  O40  1  0.325  0.928  0.957  1.0
  O  O41  1  0.604  0.665  0.970  1.0
  O  O42  1  0.103  0.198  0.739  1.0
  O  O43  1  0.812  0.898  0.743  1.0
  O  O44  1  0.098  0.904  0.736  1.0
  O  O45  1  0.898  0.812  0.243  1.0
  O  O46  1  0.198  0.103  0.239  1.0
  O  O47  1  0.904  0.098  0.236  1.0
  O  O48  1  0.758  0.259  0.161  1.0
  O  O49  1  0.751  0.509  0.167  1.0
  O  O50  1  0.502  0.262  0.160  1.0
  O  O51  1  0.259  0.758  0.661  1.0
  O  O52  1  0.262  0.502  0.660  1.0
  O  O53  1  0.509  0.751  0.667  1.0
[/CIF]
.
The material described by Ba6La2Co4O15 crystallizes in the monoclinic Cc space group. There are six inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to two equivalent O(10), two equivalent O(11), and two equivalent O(12) atoms to form BaO6 octahedra that share corners with two equivalent Co(2)O4 tetrahedra, corners with two equivalent Co(3)O4 tetrahedra, corners with two equivalent Co(4)O4 tetrahedra, and faces with two equivalent Ba(1)O6 octahedra. In the second Ba site, Ba(2) is bonded to one O(1), one O(13), one O(14), one O(15), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), one O(8), and one O(9) atom to form distorted BaO12 cuboctahedra that share faces with two equivalent Co(1)O6 octahedra,  a faceface with one Co(2)O4 tetrahedra,  a faceface with one Co(3)O4 tetrahedra, and  a faceface with one Co(4)O4 tetrahedra. In the third Ba site, Ba(3) is bonded in a 8-coordinate geometry to one O(13), one O(15), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. In the fourth Ba site, Ba(4) is bonded in a 10-coordinate geometry to one O(1), one O(12), one O(14), one O(2), one O(7), one O(8), two equivalent O(11), and two equivalent O(5) atoms. In the fifth Ba site, Ba(5) is bonded in a 10-coordinate geometry to one O(1), one O(12), one O(15), one O(3), one O(4), one O(6), two equivalent O(10), and two equivalent O(9) atoms. In the sixth Ba site, Ba(6) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. There are two inequivalent La sites. In the first La site, La(1) is bonded in a 8-coordinate geometry to one O(13), one O(14), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom. In the second La site, La(2) is bonded in a 8-coordinate geometry to one O(14), one O(15), two equivalent O(1), two equivalent O(5), and two equivalent O(9) atoms. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(13), one O(14), one O(15), one O(2), and one O(3) atom to form CoO6 octahedra that share  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Co(3)O4 tetrahedra,  a cornercorner with one Co(4)O4 tetrahedra, and faces with two equivalent Ba(2)O12 cuboctahedra. In the second Co site, Co(2) is bonded to one O(12), one O(13), one O(4), and one O(8) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 10-68°. In the third Co site, Co(3) is bonded to one O(10), one O(15), one O(6), and one O(9) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 10-68°. In the fourth Co site, Co(4) is bonded to one O(11), one O(14), one O(5), and one O(7) atom to form CoO4 tetrahedra that share  a cornercorner with one Co(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra, and  a faceface with one Ba(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-65°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded to one Ba(2), one Ba(4), one Ba(5), two equivalent La(2), and one Co(1) atom to form distorted OBa3La2Co octahedra that share corners with two equivalent O(1)Ba3La2Co octahedra,  a faceface with one O(2)Ba4LaCo octahedra, and  a faceface with one O(3)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles are 33°. In the second O site, O(2) is bonded to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(1) atom to form distorted OBa4LaCo octahedra that share corners with two equivalent O(3)Ba4LaCo octahedra,  a faceface with one O(1)Ba3La2Co octahedra, and  a faceface with one O(3)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles range from 34-37°. In the third O site, O(3) is bonded to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(1) atom to form distorted OBa4LaCo octahedra that share corners with two equivalent O(2)Ba4LaCo octahedra,  a faceface with one O(1)Ba3La2Co octahedra, and  a faceface with one O(2)Ba4LaCo octahedra. The corner-sharing octahedral tilt angles range from 34-37°. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(2) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(4), two equivalent La(2), and one Co(4) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one Ba(6), one La(1), and one Co(3) atom. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(4) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(4), one Ba(6), one La(1), and one Co(2) atom. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Ba(2), two equivalent Ba(5), two equivalent La(2), and one Co(3) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Ba(6), two equivalent Ba(1), two equivalent Ba(5), and one Co(3) atom. In the eleventh O site, O(11) is bonded in a 6-coordinate geometry to one Ba(6), two equivalent Ba(1), two equivalent Ba(4), and one Co(4) atom. In the twelfth O site, O(12) is bonded in a 6-coordinate geometry to one Ba(4), one Ba(5), one Ba(6), two equivalent Ba(1), and one Co(2) atom. In the thirteenth O site, O(13) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(6), one La(1), one Co(1), and one Co(2) atom. In the fourteenth O site, O(14) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(4), one La(1), one La(2), one Co(1), and one Co(4) atom. In the fifteenth O site, O(15) is bonded in a 6-coordinate geometry to one Ba(2), one Ba(3), one Ba(5), one La(2), one Co(1), and one Co(3) atom. is represented by the CIF card [CIF]
data_Ba6La2Co4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.937
_cell_length_b   11.937
_cell_length_c   7.135
_cell_angle_alpha   89.370
_cell_angle_beta   89.370
_cell_angle_gamma   119.487
_symmetry_Int_Tables_number   1
_cell_volume   884.748
_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  0.000  0.001  0.503  1.0
  Ba  Ba1  1  0.001  0.000  0.003  1.0
  Ba  Ba2  1  0.334  0.665  0.026  1.0
  Ba  Ba3  1  0.665  0.334  0.526  1.0
  Ba  Ba4  1  0.522  0.047  0.173  1.0
  Ba  Ba5  1  0.047  0.522  0.673  1.0
  Ba  Ba6  1  0.820  0.646  0.838  1.0
  Ba  Ba7  1  0.354  0.177  0.839  1.0
  Ba  Ba8  1  0.819  0.177  0.836  1.0
  Ba  Ba9  1  0.177  0.354  0.339  1.0
  Ba  Ba10  1  0.646  0.820  0.338  1.0
  Ba  Ba11  1  0.177  0.819  0.336  1.0
  La  La12  1  0.952  0.475  0.179  1.0
  La  La13  1  0.523  0.478  0.169  1.0
  La  La14  1  0.475  0.952  0.679  1.0
  La  La15  1  0.478  0.523  0.669  1.0
  Co  Co16  1  0.663  0.330  0.988  1.0
  Co  Co17  1  0.330  0.663  0.488  1.0
  Co  Co18  1  0.169  0.816  0.838  1.0
  Co  Co19  1  0.175  0.354  0.845  1.0
  Co  Co20  1  0.649  0.823  0.838  1.0
  Co  Co21  1  0.816  0.169  0.338  1.0
  Co  Co22  1  0.823  0.649  0.338  1.0
  Co  Co23  1  0.354  0.175  0.345  1.0
  O  O24  1  0.416  0.586  0.338  1.0
  O  O25  1  0.410  0.818  0.348  1.0
  O  O26  1  0.165  0.582  0.322  1.0
  O  O27  1  0.586  0.416  0.838  1.0
  O  O28  1  0.582  0.165  0.822  1.0
  O  O29  1  0.818  0.410  0.848  1.0
  O  O30  1  0.928  0.325  0.457  1.0
  O  O31  1  0.665  0.604  0.470  1.0
  O  O32  1  0.392  0.072  0.487  1.0
  O  O33  1  0.928  0.605  0.461  1.0
  O  O34  1  0.676  0.067  0.486  1.0
  O  O35  1  0.401  0.334  0.472  1.0
  O  O36  1  0.067  0.676  0.986  1.0
  O  O37  1  0.334  0.401  0.972  1.0
  O  O38  1  0.605  0.928  0.961  1.0
  O  O39  1  0.072  0.392  0.987  1.0
  O  O40  1  0.325  0.928  0.957  1.0
  O  O41  1  0.604  0.665  0.970  1.0
  O  O42  1  0.103  0.198  0.739  1.0
  O  O43  1  0.812  0.898  0.743  1.0
  O  O44  1  0.098  0.904  0.736  1.0
  O  O45  1  0.898  0.812  0.243  1.0
  O  O46  1  0.198  0.103  0.239  1.0
  O  O47  1  0.904  0.098  0.236  1.0
  O  O48  1  0.758  0.259  0.161  1.0
  O  O49  1  0.751  0.509  0.167  1.0
  O  O50  1  0.502  0.262  0.160  1.0
  O  O51  1  0.259  0.758  0.661  1.0
  O  O52  1  0.262  0.502  0.660  1.0
  O  O53  1  0.509  0.751  0.667  1.0
[/CIF]
.