The material described by CsErTa6Br18 crystallizes in the trigonal P-31c space group. Cs(1) is bonded in a 12-coordinate geometry to six equivalent Br(1) and six equivalent Br(3) atoms. Er(1) is bonded in an octahedral geometry to six equivalent Br(1) atoms. Ta(1) is bonded in a 5-coordinate geometry to one Br(1), two equivalent Br(2), and two equivalent Br(3) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 3-coordinate geometry to one Cs(1), one Er(1), and one Ta(1) atom. In the second Br site, Br(2) is bonded in a 2-coordinate geometry to two equivalent Ta(1) atoms. In the third Br site, Br(3) is bonded in a 2-coordinate geometry to one Cs(1) and two equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsEr(TaBr3)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.943
_cell_length_b   9.943
_cell_length_c   18.493
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   1583.288
_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
  Cs  Cs0  1  0.667  0.333  0.250  1.0
  Cs  Cs1  1  0.333  0.667  0.750  1.0
  Er  Er2  1  0.667  0.333  0.750  1.0
  Er  Er3  1  0.333  0.667  0.250  1.0
  Ta  Ta4  1  0.853  0.815  0.936  1.0
  Ta  Ta5  1  0.815  0.853  0.436  1.0
  Ta  Ta6  1  0.038  0.185  0.436  1.0
  Ta  Ta7  1  0.853  0.038  0.564  1.0
  Ta  Ta8  1  0.962  0.815  0.564  1.0
  Ta  Ta9  1  0.038  0.853  0.064  1.0
  Ta  Ta10  1  0.962  0.147  0.936  1.0
  Ta  Ta11  1  0.185  0.147  0.564  1.0
  Ta  Ta12  1  0.147  0.962  0.436  1.0
  Ta  Ta13  1  0.185  0.038  0.936  1.0
  Ta  Ta14  1  0.815  0.962  0.064  1.0
  Ta  Ta15  1  0.147  0.185  0.064  1.0
  Br  Br16  1  0.088  0.448  0.338  1.0
  Br  Br17  1  0.586  0.725  0.999  1.0
  Br  Br18  1  0.230  0.184  0.341  1.0
  Br  Br19  1  0.275  0.414  0.501  1.0
  Br  Br20  1  0.275  0.860  0.999  1.0
  Br  Br21  1  0.552  0.912  0.162  1.0
  Br  Br22  1  0.552  0.640  0.338  1.0
  Br  Br23  1  0.860  0.275  0.499  1.0
  Br  Br24  1  0.140  0.414  0.999  1.0
  Br  Br25  1  0.725  0.586  0.499  1.0
  Br  Br26  1  0.816  0.770  0.159  1.0
  Br  Br27  1  0.770  0.816  0.659  1.0
  Br  Br28  1  0.046  0.816  0.841  1.0
  Br  Br29  1  0.640  0.088  0.662  1.0
  Br  Br30  1  0.184  0.954  0.659  1.0
  Br  Br31  1  0.230  0.046  0.159  1.0
  Br  Br32  1  0.360  0.912  0.338  1.0
  Br  Br33  1  0.414  0.275  0.001  1.0
  Br  Br34  1  0.414  0.140  0.499  1.0
  Br  Br35  1  0.140  0.725  0.501  1.0
  Br  Br36  1  0.640  0.552  0.838  1.0
  Br  Br37  1  0.448  0.088  0.838  1.0
  Br  Br38  1  0.725  0.140  0.001  1.0
  Br  Br39  1  0.912  0.552  0.662  1.0
  Br  Br40  1  0.360  0.448  0.162  1.0
  Br  Br41  1  0.448  0.360  0.662  1.0
  Br  Br42  1  0.954  0.770  0.341  1.0
  Br  Br43  1  0.046  0.230  0.659  1.0
  Br  Br44  1  0.860  0.586  0.001  1.0
  Br  Br45  1  0.954  0.184  0.159  1.0
  Br  Br46  1  0.770  0.954  0.841  1.0
  Br  Br47  1  0.184  0.230  0.841  1.0
  Br  Br48  1  0.088  0.640  0.162  1.0
  Br  Br49  1  0.816  0.046  0.341  1.0
  Br  Br50  1  0.912  0.360  0.838  1.0
  Br  Br51  1  0.586  0.860  0.501  1.0
[/CIF]
.
The material described by CsErTa6Br18 crystallizes in the trigonal P-31c space group. Cs(1) is bonded in a 12-coordinate geometry to six equivalent Br(1) and six equivalent Br(3) atoms. Er(1) is bonded in an octahedral geometry to six equivalent Br(1) atoms. Ta(1) is bonded in a 5-coordinate geometry to one Br(1), two equivalent Br(2), and two equivalent Br(3) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded in a 3-coordinate geometry to one Cs(1), one Er(1), and one Ta(1) atom. In the second Br site, Br(2) is bonded in a 2-coordinate geometry to two equivalent Ta(1) atoms. In the third Br site, Br(3) is bonded in a 2-coordinate geometry to one Cs(1) and two equivalent Ta(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CsEr(TaBr3)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.943
_cell_length_b   9.943
_cell_length_c   18.493
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   1583.288
_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
  Cs  Cs0  1  0.667  0.333  0.250  1.0
  Cs  Cs1  1  0.333  0.667  0.750  1.0
  Er  Er2  1  0.667  0.333  0.750  1.0
  Er  Er3  1  0.333  0.667  0.250  1.0
  Ta  Ta4  1  0.853  0.815  0.936  1.0
  Ta  Ta5  1  0.815  0.853  0.436  1.0
  Ta  Ta6  1  0.038  0.185  0.436  1.0
  Ta  Ta7  1  0.853  0.038  0.564  1.0
  Ta  Ta8  1  0.962  0.815  0.564  1.0
  Ta  Ta9  1  0.038  0.853  0.064  1.0
  Ta  Ta10  1  0.962  0.147  0.936  1.0
  Ta  Ta11  1  0.185  0.147  0.564  1.0
  Ta  Ta12  1  0.147  0.962  0.436  1.0
  Ta  Ta13  1  0.185  0.038  0.936  1.0
  Ta  Ta14  1  0.815  0.962  0.064  1.0
  Ta  Ta15  1  0.147  0.185  0.064  1.0
  Br  Br16  1  0.088  0.448  0.338  1.0
  Br  Br17  1  0.586  0.725  0.999  1.0
  Br  Br18  1  0.230  0.184  0.341  1.0
  Br  Br19  1  0.275  0.414  0.501  1.0
  Br  Br20  1  0.275  0.860  0.999  1.0
  Br  Br21  1  0.552  0.912  0.162  1.0
  Br  Br22  1  0.552  0.640  0.338  1.0
  Br  Br23  1  0.860  0.275  0.499  1.0
  Br  Br24  1  0.140  0.414  0.999  1.0
  Br  Br25  1  0.725  0.586  0.499  1.0
  Br  Br26  1  0.816  0.770  0.159  1.0
  Br  Br27  1  0.770  0.816  0.659  1.0
  Br  Br28  1  0.046  0.816  0.841  1.0
  Br  Br29  1  0.640  0.088  0.662  1.0
  Br  Br30  1  0.184  0.954  0.659  1.0
  Br  Br31  1  0.230  0.046  0.159  1.0
  Br  Br32  1  0.360  0.912  0.338  1.0
  Br  Br33  1  0.414  0.275  0.001  1.0
  Br  Br34  1  0.414  0.140  0.499  1.0
  Br  Br35  1  0.140  0.725  0.501  1.0
  Br  Br36  1  0.640  0.552  0.838  1.0
  Br  Br37  1  0.448  0.088  0.838  1.0
  Br  Br38  1  0.725  0.140  0.001  1.0
  Br  Br39  1  0.912  0.552  0.662  1.0
  Br  Br40  1  0.360  0.448  0.162  1.0
  Br  Br41  1  0.448  0.360  0.662  1.0
  Br  Br42  1  0.954  0.770  0.341  1.0
  Br  Br43  1  0.046  0.230  0.659  1.0
  Br  Br44  1  0.860  0.586  0.001  1.0
  Br  Br45  1  0.954  0.184  0.159  1.0
  Br  Br46  1  0.770  0.954  0.841  1.0
  Br  Br47  1  0.184  0.230  0.841  1.0
  Br  Br48  1  0.088  0.640  0.162  1.0
  Br  Br49  1  0.816  0.046  0.341  1.0
  Br  Br50  1  0.912  0.360  0.838  1.0
  Br  Br51  1  0.586  0.860  0.501  1.0
[/CIF]
.