The structure described by Ba2CoCl6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), two equivalent Cl(3), two equivalent Cl(5), and two equivalent Cl(6) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(4), one Cl(6), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(5) atoms. Co(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(6), and two equivalent Cl(4) atoms to form edge-sharing CoCl6 octahedra. There are six inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to one Ba(2), two equivalent Ba(1), and one Co(1) atom to form distorted ClBa3Co trigonal pyramids that share corners with two equivalent Cl(5)Ba4 tetrahedra, corners with two equivalent Cl(6)Ba3Co trigonal pyramids, and edges with two equivalent Cl(5)Ba4 tetrahedra. In the second Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the third Cl site, Cl(2) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(2), and one Co(1) atom. In the fourth Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and one Co(1) atom. In the fifth Cl site, Cl(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), and two equivalent Co(1) atoms. In the sixth Cl site, Cl(5) is bonded to two equivalent Ba(1) and two equivalent Ba(2) atoms to form ClBa4 tetrahedra that share corners with two equivalent Cl(5)Ba4 tetrahedra, corners with two equivalent Cl(6)Ba3Co trigonal pyramids,  an edgeedge with one Cl(5)Ba4 tetrahedra, and edges with two equivalent Cl(6)Ba3Co trigonal pyramids. is represented by the CIF file [CIF]
data_Ba2CoCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.190
_cell_length_b   9.233
_cell_length_c   15.862
_cell_angle_alpha   54.539
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   976.956
_cell_formula_units_Z   4
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  0.390  0.066  0.795  1.0
  Ba  Ba1  1  0.890  0.934  0.705  1.0
  Ba  Ba2  1  0.610  0.934  0.205  1.0
  Ba  Ba3  1  0.110  0.066  0.295  1.0
  Ba  Ba4  1  0.280  0.473  0.904  1.0
  Ba  Ba5  1  0.780  0.527  0.596  1.0
  Ba  Ba6  1  0.720  0.527  0.096  1.0
  Ba  Ba7  1  0.220  0.473  0.404  1.0
  Co  Co8  1  0.857  0.200  0.932  1.0
  Co  Co9  1  0.357  0.800  0.568  1.0
  Co  Co10  1  0.143  0.800  0.068  1.0
  Co  Co11  1  0.643  0.200  0.432  1.0
  Cl  Cl12  1  0.579  0.213  0.961  1.0
  Cl  Cl13  1  0.079  0.787  0.539  1.0
  Cl  Cl14  1  0.421  0.787  0.039  1.0
  Cl  Cl15  1  0.921  0.213  0.461  1.0
  Cl  Cl16  1  0.420  0.496  0.703  1.0
  Cl  Cl17  1  0.920  0.504  0.797  1.0
  Cl  Cl18  1  0.580  0.504  0.297  1.0
  Cl  Cl19  1  0.080  0.496  0.203  1.0
  Cl  Cl20  1  0.928  0.250  0.070  1.0
  Cl  Cl21  1  0.428  0.750  0.430  1.0
  Cl  Cl22  1  0.072  0.750  0.930  1.0
  Cl  Cl23  1  0.572  0.250  0.570  1.0
  Cl  Cl24  1  0.354  0.128  0.427  1.0
  Cl  Cl25  1  0.854  0.872  0.073  1.0
  Cl  Cl26  1  0.646  0.872  0.573  1.0
  Cl  Cl27  1  0.146  0.128  0.927  1.0
  Cl  Cl28  1  0.101  0.286  0.634  1.0
  Cl  Cl29  1  0.601  0.714  0.866  1.0
  Cl  Cl30  1  0.899  0.714  0.366  1.0
  Cl  Cl31  1  0.399  0.286  0.134  1.0
  Cl  Cl32  1  0.233  0.859  0.197  1.0
  Cl  Cl33  1  0.733  0.141  0.303  1.0
  Cl  Cl34  1  0.767  0.141  0.803  1.0
  Cl  Cl35  1  0.267  0.859  0.697  1.0
[/CIF]
.
The structure described by Ba2CoCl6 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), two equivalent Cl(3), two equivalent Cl(5), and two equivalent Cl(6) atoms. In the second Ba site, Ba(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(4), one Cl(6), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(5) atoms. Co(1) is bonded to one Cl(1), one Cl(2), one Cl(3), one Cl(6), and two equivalent Cl(4) atoms to form edge-sharing CoCl6 octahedra. There are six inequivalent Cl sites. In the first Cl site, Cl(6) is bonded to one Ba(2), two equivalent Ba(1), and one Co(1) atom to form distorted ClBa3Co trigonal pyramids that share corners with two equivalent Cl(5)Ba4 tetrahedra, corners with two equivalent Cl(6)Ba3Co trigonal pyramids, and edges with two equivalent Cl(5)Ba4 tetrahedra. In the second Cl site, Cl(1) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the third Cl site, Cl(2) is bonded in a 4-coordinate geometry to one Ba(1), two equivalent Ba(2), and one Co(1) atom. In the fourth Cl site, Cl(3) is bonded in a 5-coordinate geometry to two equivalent Ba(1), two equivalent Ba(2), and one Co(1) atom. In the fifth Cl site, Cl(4) is bonded in a 4-coordinate geometry to one Ba(1), one Ba(2), and two equivalent Co(1) atoms. In the sixth Cl site, Cl(5) is bonded to two equivalent Ba(1) and two equivalent Ba(2) atoms to form ClBa4 tetrahedra that share corners with two equivalent Cl(5)Ba4 tetrahedra, corners with two equivalent Cl(6)Ba3Co trigonal pyramids,  an edgeedge with one Cl(5)Ba4 tetrahedra, and edges with two equivalent Cl(6)Ba3Co trigonal pyramids. is represented by the CIF file [CIF]
data_Ba2CoCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.190
_cell_length_b   9.233
_cell_length_c   15.862
_cell_angle_alpha   54.539
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   976.956
_cell_formula_units_Z   4
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  0.390  0.066  0.795  1.0
  Ba  Ba1  1  0.890  0.934  0.705  1.0
  Ba  Ba2  1  0.610  0.934  0.205  1.0
  Ba  Ba3  1  0.110  0.066  0.295  1.0
  Ba  Ba4  1  0.280  0.473  0.904  1.0
  Ba  Ba5  1  0.780  0.527  0.596  1.0
  Ba  Ba6  1  0.720  0.527  0.096  1.0
  Ba  Ba7  1  0.220  0.473  0.404  1.0
  Co  Co8  1  0.857  0.200  0.932  1.0
  Co  Co9  1  0.357  0.800  0.568  1.0
  Co  Co10  1  0.143  0.800  0.068  1.0
  Co  Co11  1  0.643  0.200  0.432  1.0
  Cl  Cl12  1  0.579  0.213  0.961  1.0
  Cl  Cl13  1  0.079  0.787  0.539  1.0
  Cl  Cl14  1  0.421  0.787  0.039  1.0
  Cl  Cl15  1  0.921  0.213  0.461  1.0
  Cl  Cl16  1  0.420  0.496  0.703  1.0
  Cl  Cl17  1  0.920  0.504  0.797  1.0
  Cl  Cl18  1  0.580  0.504  0.297  1.0
  Cl  Cl19  1  0.080  0.496  0.203  1.0
  Cl  Cl20  1  0.928  0.250  0.070  1.0
  Cl  Cl21  1  0.428  0.750  0.430  1.0
  Cl  Cl22  1  0.072  0.750  0.930  1.0
  Cl  Cl23  1  0.572  0.250  0.570  1.0
  Cl  Cl24  1  0.354  0.128  0.427  1.0
  Cl  Cl25  1  0.854  0.872  0.073  1.0
  Cl  Cl26  1  0.646  0.872  0.573  1.0
  Cl  Cl27  1  0.146  0.128  0.927  1.0
  Cl  Cl28  1  0.101  0.286  0.634  1.0
  Cl  Cl29  1  0.601  0.714  0.866  1.0
  Cl  Cl30  1  0.899  0.714  0.366  1.0
  Cl  Cl31  1  0.399  0.286  0.134  1.0
  Cl  Cl32  1  0.233  0.859  0.197  1.0
  Cl  Cl33  1  0.733  0.141  0.303  1.0
  Cl  Cl34  1  0.767  0.141  0.803  1.0
  Cl  Cl35  1  0.267  0.859  0.697  1.0
[/CIF]
.