The structure described by Cs3PrCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), two equivalent Cl(1), and two equivalent Cl(6) atoms. In the third Cs site, Cs(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), one Cl(5), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in an octahedral geometry to two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Pr site, Pr(2) is bonded in an octahedral geometry to two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to one Cs(1), one Cs(3), two equivalent Cs(2), and one Pr(2) atom. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Cs(1), one Cs(2), two equivalent Cs(3), and one Pr(2) atom. In the fourth Cl site, Cl(4) is bonded to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom to form distorted face-sharing ClCs4Pr square pyramids. In the fifth Cl site, Cl(5) is bonded in a 5-coordinate geometry to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent Cs(2), two equivalent Cs(3), and one Pr(2) atom. is represented by the CIF file [CIF]
data_Cs3PrCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.291
_cell_length_b   14.291
_cell_length_c   13.319
_cell_angle_alpha   80.751
_cell_angle_beta   80.751
_cell_angle_gamma   33.949
_symmetry_Int_Tables_number   1
_cell_volume   1497.439
_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
  Cs  Cs0  1  0.300  0.801  0.067  1.0
  Cs  Cs1  1  0.700  0.199  0.933  1.0
  Cs  Cs2  1  0.199  0.700  0.433  1.0
  Cs  Cs3  1  0.801  0.300  0.567  1.0
  Cs  Cs4  1  0.467  0.841  0.355  1.0
  Cs  Cs5  1  0.533  0.159  0.645  1.0
  Cs  Cs6  1  0.159  0.533  0.145  1.0
  Cs  Cs7  1  0.841  0.467  0.855  1.0
  Cs  Cs8  1  0.651  0.025  0.300  1.0
  Cs  Cs9  1  0.349  0.975  0.700  1.0
  Cs  Cs10  1  0.975  0.349  0.200  1.0
  Cs  Cs11  1  0.025  0.651  0.800  1.0
  Pr  Pr12  1  0.784  0.216  0.250  1.0
  Pr  Pr13  1  0.216  0.784  0.750  1.0
  Pr  Pr14  1  0.500  0.000  0.000  1.0
  Pr  Pr15  1  0.000  0.500  0.500  1.0
  Cl  Cl16  1  0.619  0.724  0.081  1.0
  Cl  Cl17  1  0.381  0.276  0.919  1.0
  Cl  Cl18  1  0.276  0.381  0.419  1.0
  Cl  Cl19  1  0.724  0.619  0.581  1.0
  Cl  Cl20  1  0.498  0.385  0.177  1.0
  Cl  Cl21  1  0.502  0.615  0.823  1.0
  Cl  Cl22  1  0.615  0.502  0.323  1.0
  Cl  Cl23  1  0.385  0.498  0.677  1.0
  Cl  Cl24  1  0.782  0.867  0.033  1.0
  Cl  Cl25  1  0.218  0.133  0.967  1.0
  Cl  Cl26  1  0.133  0.218  0.467  1.0
  Cl  Cl27  1  0.867  0.782  0.533  1.0
  Cl  Cl28  1  0.910  0.973  0.696  1.0
  Cl  Cl29  1  0.090  0.027  0.304  1.0
  Cl  Cl30  1  0.027  0.090  0.804  1.0
  Cl  Cl31  1  0.973  0.910  0.196  1.0
  Cl  Cl32  1  0.718  0.164  0.438  1.0
  Cl  Cl33  1  0.282  0.836  0.562  1.0
  Cl  Cl34  1  0.836  0.282  0.062  1.0
  Cl  Cl35  1  0.164  0.718  0.938  1.0
  Cl  Cl36  1  0.359  0.142  0.189  1.0
  Cl  Cl37  1  0.641  0.858  0.811  1.0
  Cl  Cl38  1  0.858  0.641  0.311  1.0
  Cl  Cl39  1  0.142  0.359  0.689  1.0
[/CIF]
.
The structure described by Cs3PrCl6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Cs site, Cs(2) is bonded in a 8-coordinate geometry to one Cl(2), one Cl(3), one Cl(4), one Cl(5), two equivalent Cl(1), and two equivalent Cl(6) atoms. In the third Cs site, Cs(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(4), one Cl(5), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in an octahedral geometry to two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second Pr site, Pr(2) is bonded in an octahedral geometry to two equivalent Cl(1), two equivalent Cl(3), and two equivalent Cl(6) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 5-coordinate geometry to one Cs(1), one Cs(3), two equivalent Cs(2), and one Pr(2) atom. In the second Cl site, Cl(2) is bonded in a 5-coordinate geometry to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom. In the third Cl site, Cl(3) is bonded in a 5-coordinate geometry to one Cs(1), one Cs(2), two equivalent Cs(3), and one Pr(2) atom. In the fourth Cl site, Cl(4) is bonded to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom to form distorted face-sharing ClCs4Pr square pyramids. In the fifth Cl site, Cl(5) is bonded in a 5-coordinate geometry to one Cs(2), one Cs(3), two equivalent Cs(1), and one Pr(1) atom. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent Cs(2), two equivalent Cs(3), and one Pr(2) atom. is represented by the CIF file [CIF]
data_Cs3PrCl6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.291
_cell_length_b   14.291
_cell_length_c   13.319
_cell_angle_alpha   80.751
_cell_angle_beta   80.751
_cell_angle_gamma   33.949
_symmetry_Int_Tables_number   1
_cell_volume   1497.439
_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
  Cs  Cs0  1  0.300  0.801  0.067  1.0
  Cs  Cs1  1  0.700  0.199  0.933  1.0
  Cs  Cs2  1  0.199  0.700  0.433  1.0
  Cs  Cs3  1  0.801  0.300  0.567  1.0
  Cs  Cs4  1  0.467  0.841  0.355  1.0
  Cs  Cs5  1  0.533  0.159  0.645  1.0
  Cs  Cs6  1  0.159  0.533  0.145  1.0
  Cs  Cs7  1  0.841  0.467  0.855  1.0
  Cs  Cs8  1  0.651  0.025  0.300  1.0
  Cs  Cs9  1  0.349  0.975  0.700  1.0
  Cs  Cs10  1  0.975  0.349  0.200  1.0
  Cs  Cs11  1  0.025  0.651  0.800  1.0
  Pr  Pr12  1  0.784  0.216  0.250  1.0
  Pr  Pr13  1  0.216  0.784  0.750  1.0
  Pr  Pr14  1  0.500  0.000  0.000  1.0
  Pr  Pr15  1  0.000  0.500  0.500  1.0
  Cl  Cl16  1  0.619  0.724  0.081  1.0
  Cl  Cl17  1  0.381  0.276  0.919  1.0
  Cl  Cl18  1  0.276  0.381  0.419  1.0
  Cl  Cl19  1  0.724  0.619  0.581  1.0
  Cl  Cl20  1  0.498  0.385  0.177  1.0
  Cl  Cl21  1  0.502  0.615  0.823  1.0
  Cl  Cl22  1  0.615  0.502  0.323  1.0
  Cl  Cl23  1  0.385  0.498  0.677  1.0
  Cl  Cl24  1  0.782  0.867  0.033  1.0
  Cl  Cl25  1  0.218  0.133  0.967  1.0
  Cl  Cl26  1  0.133  0.218  0.467  1.0
  Cl  Cl27  1  0.867  0.782  0.533  1.0
  Cl  Cl28  1  0.910  0.973  0.696  1.0
  Cl  Cl29  1  0.090  0.027  0.304  1.0
  Cl  Cl30  1  0.027  0.090  0.804  1.0
  Cl  Cl31  1  0.973  0.910  0.196  1.0
  Cl  Cl32  1  0.718  0.164  0.438  1.0
  Cl  Cl33  1  0.282  0.836  0.562  1.0
  Cl  Cl34  1  0.836  0.282  0.062  1.0
  Cl  Cl35  1  0.164  0.718  0.938  1.0
  Cl  Cl36  1  0.359  0.142  0.189  1.0
  Cl  Cl37  1  0.641  0.858  0.811  1.0
  Cl  Cl38  1  0.858  0.641  0.311  1.0
  Cl  Cl39  1  0.142  0.359  0.689  1.0
[/CIF]
.