The material structure described by Ba2Sn2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one F(10), one F(11), one F(2), one F(3), one F(5), one F(6), one F(7), one F(8), and two equivalent F(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(2), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(7) atom. In the second Sn site, Sn(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a bent 150 degrees geometry to one Ba(1) and one Sn(2) atom. In the second F site, F(1) is bonded in a 3-coordinate geometry to one Ba(2), one Sn(1), and one Sn(2) atom. In the third F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Sn(1) atom. In the fourth F site, F(3) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sn(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 Sn(1) atom. In the sixth F site, F(5) is bonded in a bent 120 degrees geometry to one Ba(1) and one Ba(2) atom. In the seventh F site, F(6) is bonded in a distorted single-bond geometry to one Ba(1), one Sn(1), and one Sn(2) atom. In the eighth F site, F(7) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Sn(1) atom. In the ninth F site, F(8) is bonded in a distorted single-bond geometry to one Ba(1) and one Sn(2) atom. In the tenth F site, F(9) is bonded in a bent 120 degrees geometry to one Ba(2) and one Sn(2) atom. In the eleventh F site, F(10) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2Sn2F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.804
_cell_length_b   7.804
_cell_length_c   15.002
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   791.288
_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  0.850  0.814  0.657  1.0
  Ba  Ba1  1  0.478  0.080  0.809  1.0
  Ba  Ba2  1  0.964  0.150  0.991  1.0
  Ba  Ba3  1  0.920  0.398  0.476  1.0
  Ba  Ba4  1  0.602  0.522  0.143  1.0
  Ba  Ba5  1  0.186  0.036  0.324  1.0
  Sn  Sn6  1  0.875  0.636  0.898  1.0
  Sn  Sn7  1  0.172  0.464  0.727  1.0
  Sn  Sn8  1  0.536  0.707  0.394  1.0
  Sn  Sn9  1  0.761  0.125  0.231  1.0
  Sn  Sn10  1  0.293  0.828  0.061  1.0
  Sn  Sn11  1  0.364  0.239  0.565  1.0
  F  F12  1  0.997  0.725  0.047  1.0
  F  F13  1  0.756  0.344  0.945  1.0
  F  F14  1  0.728  0.003  0.381  1.0
  F  F15  1  0.488  0.150  0.467  1.0
  F  F16  1  0.885  0.952  0.182  1.0
  F  F17  1  0.276  0.253  0.188  1.0
  F  F18  1  0.850  0.338  0.133  1.0
  F  F19  1  0.747  0.024  0.855  1.0
  F  F20  1  0.067  0.115  0.516  1.0
  F  F21  1  0.587  0.955  0.080  1.0
  F  F22  1  0.662  0.512  0.800  1.0
  F  F23  1  0.275  0.272  0.714  1.0
  F  F24  1  0.686  0.688  0.973  1.0
  F  F25  1  0.332  0.093  0.021  1.0
  F  F26  1  0.003  0.314  0.307  1.0
  F  F27  1  0.656  0.412  0.611  1.0
  F  F28  1  0.289  0.783  0.928  1.0
  F  F29  1  0.368  0.413  0.414  1.0
  F  F30  1  0.290  0.726  0.406  1.0
  F  F31  1  0.312  0.997  0.640  1.0
  F  F32  1  0.436  0.710  0.739  1.0
  F  F33  1  0.907  0.239  0.688  1.0
  F  F34  1  0.761  0.668  0.354  1.0
  F  F35  1  0.493  0.711  0.262  1.0
  F  F36  1  0.045  0.632  0.747  1.0
  F  F37  1  0.048  0.933  0.849  1.0
  F  F38  1  0.588  0.244  0.278  1.0
  F  F39  1  0.155  0.399  0.856  1.0
  F  F40  1  0.243  0.845  0.190  1.0
  F  F41  1  0.274  0.564  0.072  1.0
  F  F42  1  0.976  0.724  0.521  1.0
  F  F43  1  0.217  0.507  0.595  1.0
  F  F44  1  0.601  0.757  0.523  1.0
[/CIF]
.
The material structure described by Ba2Sn2F11 crystallizes in the trigonal P3_2 space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a 10-coordinate geometry to one F(10), one F(11), one F(2), one F(3), one F(5), one F(6), one F(7), one F(8), and two equivalent F(4) atoms. In the second Ba site, Ba(2) is bonded in a 8-coordinate geometry to one F(1), one F(10), one F(2), one F(3), one F(4), one F(5), one F(7), and one F(9) atom. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 6-coordinate geometry to one F(1), one F(2), one F(3), one F(4), one F(6), and one F(7) atom. In the second Sn site, Sn(2) is bonded in an octahedral geometry to one F(1), one F(10), one F(11), one F(6), one F(8), and one F(9) atom. There are eleven inequivalent F sites. In the first F site, F(11) is bonded in a bent 150 degrees geometry to one Ba(1) and one Sn(2) atom. In the second F site, F(1) is bonded in a 3-coordinate geometry to one Ba(2), one Sn(1), and one Sn(2) atom. In the third F site, F(2) is bonded in a distorted trigonal non-coplanar geometry to one Ba(1), one Ba(2), and one Sn(1) atom. In the fourth F site, F(3) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sn(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 Sn(1) atom. In the sixth F site, F(5) is bonded in a bent 120 degrees geometry to one Ba(1) and one Ba(2) atom. In the seventh F site, F(6) is bonded in a distorted single-bond geometry to one Ba(1), one Sn(1), and one Sn(2) atom. In the eighth F site, F(7) is bonded in a 3-coordinate geometry to one Ba(1), one Ba(2), and one Sn(1) atom. In the ninth F site, F(8) is bonded in a distorted single-bond geometry to one Ba(1) and one Sn(2) atom. In the tenth F site, F(9) is bonded in a bent 120 degrees geometry to one Ba(2) and one Sn(2) atom. In the eleventh F site, F(10) is bonded in a distorted single-bond geometry to one Ba(1), one Ba(2), and one Sn(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ba2Sn2F11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.804
_cell_length_b   7.804
_cell_length_c   15.002
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   791.288
_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  0.850  0.814  0.657  1.0
  Ba  Ba1  1  0.478  0.080  0.809  1.0
  Ba  Ba2  1  0.964  0.150  0.991  1.0
  Ba  Ba3  1  0.920  0.398  0.476  1.0
  Ba  Ba4  1  0.602  0.522  0.143  1.0
  Ba  Ba5  1  0.186  0.036  0.324  1.0
  Sn  Sn6  1  0.875  0.636  0.898  1.0
  Sn  Sn7  1  0.172  0.464  0.727  1.0
  Sn  Sn8  1  0.536  0.707  0.394  1.0
  Sn  Sn9  1  0.761  0.125  0.231  1.0
  Sn  Sn10  1  0.293  0.828  0.061  1.0
  Sn  Sn11  1  0.364  0.239  0.565  1.0
  F  F12  1  0.997  0.725  0.047  1.0
  F  F13  1  0.756  0.344  0.945  1.0
  F  F14  1  0.728  0.003  0.381  1.0
  F  F15  1  0.488  0.150  0.467  1.0
  F  F16  1  0.885  0.952  0.182  1.0
  F  F17  1  0.276  0.253  0.188  1.0
  F  F18  1  0.850  0.338  0.133  1.0
  F  F19  1  0.747  0.024  0.855  1.0
  F  F20  1  0.067  0.115  0.516  1.0
  F  F21  1  0.587  0.955  0.080  1.0
  F  F22  1  0.662  0.512  0.800  1.0
  F  F23  1  0.275  0.272  0.714  1.0
  F  F24  1  0.686  0.688  0.973  1.0
  F  F25  1  0.332  0.093  0.021  1.0
  F  F26  1  0.003  0.314  0.307  1.0
  F  F27  1  0.656  0.412  0.611  1.0
  F  F28  1  0.289  0.783  0.928  1.0
  F  F29  1  0.368  0.413  0.414  1.0
  F  F30  1  0.290  0.726  0.406  1.0
  F  F31  1  0.312  0.997  0.640  1.0
  F  F32  1  0.436  0.710  0.739  1.0
  F  F33  1  0.907  0.239  0.688  1.0
  F  F34  1  0.761  0.668  0.354  1.0
  F  F35  1  0.493  0.711  0.262  1.0
  F  F36  1  0.045  0.632  0.747  1.0
  F  F37  1  0.048  0.933  0.849  1.0
  F  F38  1  0.588  0.244  0.278  1.0
  F  F39  1  0.155  0.399  0.856  1.0
  F  F40  1  0.243  0.845  0.190  1.0
  F  F41  1  0.274  0.564  0.072  1.0
  F  F42  1  0.976  0.724  0.521  1.0
  F  F43  1  0.217  0.507  0.595  1.0
  F  F44  1  0.601  0.757  0.523  1.0
[/CIF]
.