The material described by Pr2B5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 12-coordinate geometry to two equivalent B(3), two equivalent B(4), two equivalent B(5), three equivalent B(1), and three equivalent B(2) atoms. In the second Pr site, Pr(2) is bonded in a 12-coordinate geometry to two equivalent B(3), two equivalent B(4), two equivalent B(5), three equivalent B(1), and three equivalent B(2) atoms. There are five inequivalent B sites. In the first B site, B(5) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(1), two equivalent B(3), and two equivalent B(4) atoms. In the second B site, B(1) is bonded in a 8-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), one B(1), and one B(5) atom. In the third B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), one B(2), one B(3), and one B(4) atom. In the fourth B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(2), two equivalent B(4), and two equivalent B(5) atoms. In the fifth B site, B(4) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(2), two equivalent B(3), and two equivalent B(5) atoms. is represented by the CIF file [CIF]
data_Pr2B5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.341
_cell_length_b   7.377
_cell_length_c   8.505
_cell_angle_alpha   107.897
_cell_angle_beta   115.566
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   390.633
_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
  Pr  Pr0  1  0.818  0.779  0.763  1.0
  Pr  Pr1  1  0.054  0.721  0.237  1.0
  Pr  Pr2  1  0.182  0.221  0.237  1.0
  Pr  Pr3  1  0.946  0.279  0.763  1.0
  Pr  Pr4  1  0.309  0.908  0.764  1.0
  Pr  Pr5  1  0.545  0.592  0.236  1.0
  Pr  Pr6  1  0.691  0.092  0.236  1.0
  Pr  Pr7  1  0.455  0.408  0.764  1.0
  B  B8  1  0.288  0.848  0.088  1.0
  B  B9  1  0.201  0.652  0.912  1.0
  B  B10  1  0.712  0.152  0.912  1.0
  B  B11  1  0.799  0.348  0.088  1.0
  B  B12  1  0.094  0.094  0.501  1.0
  B  B13  1  0.593  0.406  0.499  1.0
  B  B14  1  0.906  0.906  0.499  1.0
  B  B15  1  0.407  0.594  0.501  1.0
  B  B16  1  0.539  0.170  0.498  1.0
  B  B17  1  0.041  0.330  0.502  1.0
  B  B18  1  0.461  0.830  0.502  1.0
  B  B19  1  0.959  0.670  0.498  1.0
  B  B20  1  0.670  0.960  0.499  1.0
  B  B21  1  0.171  0.540  0.501  1.0
  B  B22  1  0.330  0.040  0.501  1.0
  B  B23  1  0.829  0.460  0.499  1.0
  B  B24  1  0.590  0.063  0.679  1.0
  B  B25  1  0.911  0.437  0.321  1.0
  B  B26  1  0.410  0.937  0.321  1.0
  B  B27  1  0.089  0.563  0.679  1.0
[/CIF]
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The material described by Pr2B5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 12-coordinate geometry to two equivalent B(3), two equivalent B(4), two equivalent B(5), three equivalent B(1), and three equivalent B(2) atoms. In the second Pr site, Pr(2) is bonded in a 12-coordinate geometry to two equivalent B(3), two equivalent B(4), two equivalent B(5), three equivalent B(1), and three equivalent B(2) atoms. There are five inequivalent B sites. In the first B site, B(5) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(1), two equivalent B(3), and two equivalent B(4) atoms. In the second B site, B(1) is bonded in a 8-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), one B(1), and one B(5) atom. In the third B site, B(2) is bonded in a 9-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), one B(2), one B(3), and one B(4) atom. In the fourth B site, B(3) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(2), two equivalent B(4), and two equivalent B(5) atoms. In the fifth B site, B(4) is bonded in a 9-coordinate geometry to two equivalent Pr(1), two equivalent Pr(2), one B(2), two equivalent B(3), and two equivalent B(5) atoms. is represented by the CIF file [CIF]
data_Pr2B5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.341
_cell_length_b   7.377
_cell_length_c   8.505
_cell_angle_alpha   107.897
_cell_angle_beta   115.566
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   390.633
_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
  Pr  Pr0  1  0.818  0.779  0.763  1.0
  Pr  Pr1  1  0.054  0.721  0.237  1.0
  Pr  Pr2  1  0.182  0.221  0.237  1.0
  Pr  Pr3  1  0.946  0.279  0.763  1.0
  Pr  Pr4  1  0.309  0.908  0.764  1.0
  Pr  Pr5  1  0.545  0.592  0.236  1.0
  Pr  Pr6  1  0.691  0.092  0.236  1.0
  Pr  Pr7  1  0.455  0.408  0.764  1.0
  B  B8  1  0.288  0.848  0.088  1.0
  B  B9  1  0.201  0.652  0.912  1.0
  B  B10  1  0.712  0.152  0.912  1.0
  B  B11  1  0.799  0.348  0.088  1.0
  B  B12  1  0.094  0.094  0.501  1.0
  B  B13  1  0.593  0.406  0.499  1.0
  B  B14  1  0.906  0.906  0.499  1.0
  B  B15  1  0.407  0.594  0.501  1.0
  B  B16  1  0.539  0.170  0.498  1.0
  B  B17  1  0.041  0.330  0.502  1.0
  B  B18  1  0.461  0.830  0.502  1.0
  B  B19  1  0.959  0.670  0.498  1.0
  B  B20  1  0.670  0.960  0.499  1.0
  B  B21  1  0.171  0.540  0.501  1.0
  B  B22  1  0.330  0.040  0.501  1.0
  B  B23  1  0.829  0.460  0.499  1.0
  B  B24  1  0.590  0.063  0.679  1.0
  B  B25  1  0.911  0.437  0.321  1.0
  B  B26  1  0.410  0.937  0.321  1.0
  B  B27  1  0.089  0.563  0.679  1.0
[/CIF]
.