The compound described by Ba3Co8Sn3O20 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(5) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Sn(2)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, and corners with three equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Co site, Co(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and corners with three equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-61°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form SnO6 octahedra that share corners with four equivalent Co(2)O4 tetrahedra and edges with four equivalent Sn(2)O6 octahedra. In the second Sn site, Sn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra,  an edgeedge with one Sn(2)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Sn(2) atom. In the second O site, O(4) is bonded in a 3-coordinate geometry to one Ba(1), one Co(1), and one Co(2) atom. In the third O site, O(5) is bonded to one Ba(1), one Ba(2), one Co(1), and one Co(2) atom to form distorted OBa2Co2 tetrahedra that share  a cornercorner with one O(2)BaSn3 tetrahedra, corners with two equivalent O(5)Ba2Co2 tetrahedra, and  an edgeedge with one O(5)Ba2Co2 tetrahedra. In the fourth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Sn(1), and one Sn(2) atom. In the fifth O site, O(1) is bonded in a distorted trigonal planar geometry to one Ba(2) and two equivalent Co(1) atoms. In the sixth O site, O(2) is bonded to one Ba(1), one Sn(1), and two equivalent Sn(2) atoms to form distorted OBaSn3 tetrahedra that share  a cornercorner with one O(2)BaSn3 tetrahedra, corners with two equivalent O(5)Ba2Co2 tetrahedra, and  an edgeedge with one O(2)BaSn3 tetrahedra. is represented by the CIF card [CIF]
data_Ba3Co8Sn3O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.211
_cell_length_b   10.211
_cell_length_c   5.326
_cell_angle_alpha   75.743
_cell_angle_beta   75.743
_cell_angle_gamma   72.563
_symmetry_Int_Tables_number   1
_cell_volume   504.536
_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  0.226  0.226  0.270  1.0
  Ba  Ba1  1  0.774  0.774  0.730  1.0
  Ba  Ba2  1  0.500  0.500  0.000  1.0
  Co  Co3  1  0.487  0.223  0.660  1.0
  Co  Co4  1  0.513  0.777  0.340  1.0
  Co  Co5  1  0.777  0.513  0.340  1.0
  Co  Co6  1  0.223  0.487  0.660  1.0
  Co  Co7  1  0.366  0.923  0.837  1.0
  Co  Co8  1  0.634  0.077  0.163  1.0
  Co  Co9  1  0.077  0.634  0.163  1.0
  Co  Co10  1  0.923  0.366  0.837  1.0
  Sn  Sn11  1  0.000  0.000  0.000  1.0
  Sn  Sn12  1  0.144  0.856  0.500  1.0
  Sn  Sn13  1  0.856  0.144  0.500  1.0
  O  O14  1  0.406  0.406  0.517  1.0
  O  O15  1  0.594  0.594  0.483  1.0
  O  O16  1  0.066  0.066  0.602  1.0
  O  O17  1  0.934  0.934  0.398  1.0
  O  O18  1  0.662  0.167  0.425  1.0
  O  O19  1  0.338  0.833  0.575  1.0
  O  O20  1  0.833  0.338  0.575  1.0
  O  O21  1  0.167  0.662  0.425  1.0
  O  O22  1  0.380  0.103  0.678  1.0
  O  O23  1  0.620  0.897  0.322  1.0
  O  O24  1  0.897  0.620  0.322  1.0
  O  O25  1  0.103  0.380  0.678  1.0
  O  O26  1  0.506  0.783  0.988  1.0
  O  O27  1  0.494  0.217  0.012  1.0
  O  O28  1  0.217  0.494  0.012  1.0
  O  O29  1  0.783  0.506  0.988  1.0
  O  O30  1  0.195  0.953  0.109  1.0
  O  O31  1  0.805  0.047  0.891  1.0
  O  O32  1  0.047  0.805  0.891  1.0
  O  O33  1  0.953  0.195  0.109  1.0
[/CIF]
.
The compound described by Ba3Co8Sn3O20 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(4), and two equivalent O(5) atoms. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(5) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form CoO4 tetrahedra that share  a cornercorner with one Sn(2)O6 octahedra,  a cornercorner with one Co(1)O4 tetrahedra, and corners with three equivalent Co(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 55°. In the second Co site, Co(2) is bonded to one O(3), one O(4), one O(5), and one O(6) atom to form CoO4 tetrahedra that share  a cornercorner with one Sn(1)O6 octahedra, corners with two equivalent Sn(2)O6 octahedra, and corners with three equivalent Co(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 47-61°. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form SnO6 octahedra that share corners with four equivalent Co(2)O4 tetrahedra and edges with four equivalent Sn(2)O6 octahedra. In the second Sn site, Sn(2) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(6) atoms to form SnO6 octahedra that share corners with two equivalent Co(1)O4 tetrahedra, corners with four equivalent Co(2)O4 tetrahedra,  an edgeedge with one Sn(2)O6 octahedra, and edges with two equivalent Sn(1)O6 octahedra. There are six inequivalent O sites. In the first O site, O(3) is bonded in a trigonal planar geometry to one Co(1), one Co(2), and one Sn(2) atom. In the second O site, O(4) is bonded in a 3-coordinate geometry to one Ba(1), one Co(1), and one Co(2) atom. In the third O site, O(5) is bonded to one Ba(1), one Ba(2), one Co(1), and one Co(2) atom to form distorted OBa2Co2 tetrahedra that share  a cornercorner with one O(2)BaSn3 tetrahedra, corners with two equivalent O(5)Ba2Co2 tetrahedra, and  an edgeedge with one O(5)Ba2Co2 tetrahedra. In the fourth O site, O(6) is bonded in a 3-coordinate geometry to one Co(2), one Sn(1), and one Sn(2) atom. In the fifth O site, O(1) is bonded in a distorted trigonal planar geometry to one Ba(2) and two equivalent Co(1) atoms. In the sixth O site, O(2) is bonded to one Ba(1), one Sn(1), and two equivalent Sn(2) atoms to form distorted OBaSn3 tetrahedra that share  a cornercorner with one O(2)BaSn3 tetrahedra, corners with two equivalent O(5)Ba2Co2 tetrahedra, and  an edgeedge with one O(2)BaSn3 tetrahedra. is represented by the CIF card [CIF]
data_Ba3Co8Sn3O20
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.211
_cell_length_b   10.211
_cell_length_c   5.326
_cell_angle_alpha   75.743
_cell_angle_beta   75.743
_cell_angle_gamma   72.563
_symmetry_Int_Tables_number   1
_cell_volume   504.536
_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  0.226  0.226  0.270  1.0
  Ba  Ba1  1  0.774  0.774  0.730  1.0
  Ba  Ba2  1  0.500  0.500  0.000  1.0
  Co  Co3  1  0.487  0.223  0.660  1.0
  Co  Co4  1  0.513  0.777  0.340  1.0
  Co  Co5  1  0.777  0.513  0.340  1.0
  Co  Co6  1  0.223  0.487  0.660  1.0
  Co  Co7  1  0.366  0.923  0.837  1.0
  Co  Co8  1  0.634  0.077  0.163  1.0
  Co  Co9  1  0.077  0.634  0.163  1.0
  Co  Co10  1  0.923  0.366  0.837  1.0
  Sn  Sn11  1  0.000  0.000  0.000  1.0
  Sn  Sn12  1  0.144  0.856  0.500  1.0
  Sn  Sn13  1  0.856  0.144  0.500  1.0
  O  O14  1  0.406  0.406  0.517  1.0
  O  O15  1  0.594  0.594  0.483  1.0
  O  O16  1  0.066  0.066  0.602  1.0
  O  O17  1  0.934  0.934  0.398  1.0
  O  O18  1  0.662  0.167  0.425  1.0
  O  O19  1  0.338  0.833  0.575  1.0
  O  O20  1  0.833  0.338  0.575  1.0
  O  O21  1  0.167  0.662  0.425  1.0
  O  O22  1  0.380  0.103  0.678  1.0
  O  O23  1  0.620  0.897  0.322  1.0
  O  O24  1  0.897  0.620  0.322  1.0
  O  O25  1  0.103  0.380  0.678  1.0
  O  O26  1  0.506  0.783  0.988  1.0
  O  O27  1  0.494  0.217  0.012  1.0
  O  O28  1  0.217  0.494  0.012  1.0
  O  O29  1  0.783  0.506  0.988  1.0
  O  O30  1  0.195  0.953  0.109  1.0
  O  O31  1  0.805  0.047  0.891  1.0
  O  O32  1  0.047  0.805  0.891  1.0
  O  O33  1  0.953  0.195  0.109  1.0
[/CIF]
.