The material structure described by Ba2Co2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one F(1), one F(10), one F(11), one F(2), one F(3), one F(6), one F(7), one F(8), two equivalent F(4), and two equivalent F(5) atoms to form distorted BaF12 cuboctahedra that share  a cornercorner with one Co(1)F6 octahedra, corners with three equivalent Co(2)F6 octahedra, edges with two equivalent Ba(1)F12 cuboctahedra,  an edgeedge with one Co(1)F6 octahedra,  an edgeedge with one Co(2)F6 octahedra, and  a faceface with one Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 28-45°. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(7), one F(8), and one F(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(9) atom to form CoF6 octahedra that share  a cornercorner with one Ba(1)F12 cuboctahedra,  a cornercorner with one Co(2)F6 octahedra,  an edgeedge with one Ba(1)F12 cuboctahedra,  an edgeedge with one Co(2)F6 octahedra, and  a faceface with one Ba(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 55°. In the second Co site, Co(2) is bonded to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom to form distorted CoF6 octahedra that share corners with three equivalent Ba(1)F12 cuboctahedra,  a cornercorner with one Co(1)F6 octahedra,  an edgeedge with one Ba(1)F12 cuboctahedra, and  an edgeedge with one Co(1)F6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one Co(2) atom. In the second F site, F(1) is bonded in a distorted water-like geometry to one Ba(1), one Ba(2), one Co(1), and one Co(2) atom. In the third F site, F(2) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the fourth F site, F(3) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the fifth F site, F(4) is bonded in a distorted single-bond geometry to one Ba(2), two equivalent Ba(1), and one Co(1) atom. In the sixth F site, F(5) is bonded in a distorted trigonal planar geometry to one Ba(2) and two equivalent Ba(1) atoms. In the seventh F site, F(6) is bonded in a bent 120 degrees geometry to one Ba(1), one Co(1), and one Co(2) atom. In the eighth F site, F(7) is bonded in a bent 120 degrees geometry to one Ba(1) and one Ba(2) atom. In the ninth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Co(2) atom. In the tenth F site, F(9) is bonded in a distorted trigonal non-coplanar geometry to one Ba(2), one Co(1), and one Co(2) atom. In the eleventh F site, F(10) is bonded in a single-bond geometry to one Ba(1) and one Co(2) atom. is represented by the CIF card [CIF]
data_Ba2Co2F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.638
_cell_length_b   7.638
_cell_length_c   14.140
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   714.349
_cell_formula_units_Z   3
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  0.537  0.180  0.670  1.0
  Ba  Ba1  1  0.145  0.473  0.827  1.0
  Ba  Ba2  1  0.643  0.463  0.004  1.0
  Ba  Ba3  1  0.527  0.672  0.493  1.0
  Ba  Ba4  1  0.328  0.855  0.160  1.0
  Ba  Ba5  1  0.820  0.357  0.337  1.0
  Co  Co6  1  0.643  0.975  0.883  1.0
  Co  Co7  1  0.853  0.775  0.727  1.0
  Co  Co8  1  0.225  0.079  0.394  1.0
  Co  Co9  1  0.332  0.357  0.216  1.0
  Co  Co10  1  0.921  0.147  0.060  1.0
  Co  Co11  1  0.025  0.668  0.550  1.0
  F  F12  1  0.635  0.058  0.017  1.0
  F  F13  1  0.516  0.715  0.934  1.0
  F  F14  1  0.423  0.365  0.350  1.0
  F  F15  1  0.113  0.499  0.490  1.0
  F  F16  1  0.524  0.279  0.182  1.0
  F  F17  1  0.948  0.601  0.179  1.0
  F  F18  1  0.501  0.613  0.156  1.0
  F  F19  1  0.399  0.346  0.845  1.0
  F  F20  1  0.755  0.476  0.515  1.0
  F  F21  1  0.213  0.284  0.088  1.0
  F  F22  1  0.387  0.887  0.823  1.0
  F  F23  1  0.942  0.577  0.684  1.0
  F  F24  1  0.326  0.060  0.007  1.0
  F  F25  1  0.987  0.410  0.013  1.0
  F  F26  1  0.734  0.674  0.341  1.0
  F  F27  1  0.285  0.801  0.601  1.0
  F  F28  1  0.929  0.092  0.916  1.0
  F  F29  1  0.071  0.787  0.421  1.0
  F  F30  1  0.013  0.116  0.404  1.0
  F  F31  1  0.940  0.266  0.674  1.0
  F  F32  1  0.103  0.987  0.738  1.0
  F  F33  1  0.590  0.577  0.680  1.0
  F  F34  1  0.423  0.013  0.347  1.0
  F  F35  1  0.163  0.071  0.249  1.0
  F  F36  1  0.716  0.929  0.755  1.0
  F  F37  1  0.721  0.245  0.848  1.0
  F  F38  1  0.199  0.484  0.267  1.0
  F  F39  1  0.843  0.669  0.849  1.0
  F  F40  1  0.826  0.157  0.182  1.0
  F  F41  1  0.884  0.897  0.071  1.0
  F  F42  1  0.654  0.052  0.512  1.0
  F  F43  1  0.908  0.837  0.583  1.0
  F  F44  1  0.331  0.174  0.516  1.0
[/CIF]
.
The material structure described by Ba2Co2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to one F(1), one F(10), one F(11), one F(2), one F(3), one F(6), one F(7), one F(8), two equivalent F(4), and two equivalent F(5) atoms to form distorted BaF12 cuboctahedra that share  a cornercorner with one Co(1)F6 octahedra, corners with three equivalent Co(2)F6 octahedra, edges with two equivalent Ba(1)F12 cuboctahedra,  an edgeedge with one Co(1)F6 octahedra,  an edgeedge with one Co(2)F6 octahedra, and  a faceface with one Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 28-45°. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(5), one F(7), one F(8), and one F(9) atom. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(9) atom to form CoF6 octahedra that share  a cornercorner with one Ba(1)F12 cuboctahedra,  a cornercorner with one Co(2)F6 octahedra,  an edgeedge with one Ba(1)F12 cuboctahedra,  an edgeedge with one Co(2)F6 octahedra, and  a faceface with one Ba(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 55°. In the second Co site, Co(2) is bonded to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom to form distorted CoF6 octahedra that share corners with three equivalent Ba(1)F12 cuboctahedra,  a cornercorner with one Co(1)F6 octahedra,  an edgeedge with one Ba(1)F12 cuboctahedra, and  an edgeedge with one Co(1)F6 octahedra. The corner-sharing octahedral tilt angles are 55°. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a distorted bent 150 degrees geometry to one Ba(1) and one Co(2) atom. In the second F site, F(1) is bonded in a distorted water-like geometry to one Ba(1), one Ba(2), one Co(1), and one Co(2) atom. In the third F site, F(2) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the fourth F site, F(3) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Co(1) atom. In the fifth F site, F(4) is bonded in a distorted single-bond geometry to one Ba(2), two equivalent Ba(1), and one Co(1) atom. In the sixth F site, F(5) is bonded in a distorted trigonal planar geometry to one Ba(2) and two equivalent Ba(1) atoms. In the seventh F site, F(6) is bonded in a bent 120 degrees geometry to one Ba(1), one Co(1), and one Co(2) atom. In the eighth F site, F(7) is bonded in a bent 120 degrees geometry to one Ba(1) and one Ba(2) atom. In the ninth F site, F(8) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Co(2) atom. In the tenth F site, F(9) is bonded in a distorted trigonal non-coplanar geometry to one Ba(2), one Co(1), and one Co(2) atom. In the eleventh F site, F(10) is bonded in a single-bond geometry to one Ba(1) and one Co(2) atom. is represented by the CIF card [CIF]
data_Ba2Co2F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.638
_cell_length_b   7.638
_cell_length_c   14.140
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   714.349
_cell_formula_units_Z   3
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  0.537  0.180  0.670  1.0
  Ba  Ba1  1  0.145  0.473  0.827  1.0
  Ba  Ba2  1  0.643  0.463  0.004  1.0
  Ba  Ba3  1  0.527  0.672  0.493  1.0
  Ba  Ba4  1  0.328  0.855  0.160  1.0
  Ba  Ba5  1  0.820  0.357  0.337  1.0
  Co  Co6  1  0.643  0.975  0.883  1.0
  Co  Co7  1  0.853  0.775  0.727  1.0
  Co  Co8  1  0.225  0.079  0.394  1.0
  Co  Co9  1  0.332  0.357  0.216  1.0
  Co  Co10  1  0.921  0.147  0.060  1.0
  Co  Co11  1  0.025  0.668  0.550  1.0
  F  F12  1  0.635  0.058  0.017  1.0
  F  F13  1  0.516  0.715  0.934  1.0
  F  F14  1  0.423  0.365  0.350  1.0
  F  F15  1  0.113  0.499  0.490  1.0
  F  F16  1  0.524  0.279  0.182  1.0
  F  F17  1  0.948  0.601  0.179  1.0
  F  F18  1  0.501  0.613  0.156  1.0
  F  F19  1  0.399  0.346  0.845  1.0
  F  F20  1  0.755  0.476  0.515  1.0
  F  F21  1  0.213  0.284  0.088  1.0
  F  F22  1  0.387  0.887  0.823  1.0
  F  F23  1  0.942  0.577  0.684  1.0
  F  F24  1  0.326  0.060  0.007  1.0
  F  F25  1  0.987  0.410  0.013  1.0
  F  F26  1  0.734  0.674  0.341  1.0
  F  F27  1  0.285  0.801  0.601  1.0
  F  F28  1  0.929  0.092  0.916  1.0
  F  F29  1  0.071  0.787  0.421  1.0
  F  F30  1  0.013  0.116  0.404  1.0
  F  F31  1  0.940  0.266  0.674  1.0
  F  F32  1  0.103  0.987  0.738  1.0
  F  F33  1  0.590  0.577  0.680  1.0
  F  F34  1  0.423  0.013  0.347  1.0
  F  F35  1  0.163  0.071  0.249  1.0
  F  F36  1  0.716  0.929  0.755  1.0
  F  F37  1  0.721  0.245  0.848  1.0
  F  F38  1  0.199  0.484  0.267  1.0
  F  F39  1  0.843  0.669  0.849  1.0
  F  F40  1  0.826  0.157  0.182  1.0
  F  F41  1  0.884  0.897  0.071  1.0
  F  F42  1  0.654  0.052  0.512  1.0
  F  F43  1  0.908  0.837  0.583  1.0
  F  F44  1  0.331  0.174  0.516  1.0
[/CIF]
.