The structure described by Pr2Co7B3 crystallizes in the hexagonal P6/mmm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 20-coordinate geometry to one Pr(2), one Pr(3), six equivalent Co(1), six equivalent Co(2), and six equivalent B(1) atoms. In the second Pr site, Pr(2) is bonded in a 20-coordinate geometry to two equivalent Pr(1), twelve equivalent Co(2), and six equivalent B(2) atoms. In the third Pr site, Pr(3) is bonded in a 6-coordinate geometry to two equivalent Pr(1) and six equivalent Co(3) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Pr(1), two equivalent Co(3), and two equivalent B(1) atoms. In the second Co site, Co(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent B(1), and two equivalent B(2) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Pr(3) and six equivalent Co(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Co(1), and three equivalent Co(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Pr(2) and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_Pr2Co7B3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.151
_cell_length_b   5.151
_cell_length_c   12.732
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   292.575
_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
  Pr  Pr0  1  0.000  0.000  0.740  1.0
  Pr  Pr1  1  0.000  0.000  0.260  1.0
  Pr  Pr2  1  0.000  0.000  0.500  1.0
  Pr  Pr3  1  0.000  0.000  0.000  1.0
  Co  Co4  1  0.500  0.500  0.157  1.0
  Co  Co5  1  0.500  0.000  0.843  1.0
  Co  Co6  1  0.500  0.500  0.843  1.0
  Co  Co7  1  0.000  0.500  0.157  1.0
  Co  Co8  1  0.500  0.000  0.385  1.0
  Co  Co9  1  0.500  0.500  0.385  1.0
  Co  Co10  1  0.000  0.500  0.385  1.0
  Co  Co11  1  0.500  0.000  0.615  1.0
  Co  Co12  1  0.500  0.500  0.615  1.0
  Co  Co13  1  0.000  0.500  0.615  1.0
  Co  Co14  1  0.333  0.667  0.000  1.0
  Co  Co15  1  0.667  0.333  0.000  1.0
  Co  Co16  1  0.000  0.500  0.843  1.0
  Co  Co17  1  0.500  0.000  0.157  1.0
  B  B18  1  0.333  0.667  0.731  1.0
  B  B19  1  0.667  0.333  0.731  1.0
  B  B20  1  0.667  0.333  0.269  1.0
  B  B21  1  0.333  0.667  0.269  1.0
  B  B22  1  0.667  0.333  0.500  1.0
  B  B23  1  0.333  0.667  0.500  1.0
[/CIF]
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The structure described by Pr2Co7B3 crystallizes in the hexagonal P6/mmm space group. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 20-coordinate geometry to one Pr(2), one Pr(3), six equivalent Co(1), six equivalent Co(2), and six equivalent B(1) atoms. In the second Pr site, Pr(2) is bonded in a 20-coordinate geometry to two equivalent Pr(1), twelve equivalent Co(2), and six equivalent B(2) atoms. In the third Pr site, Pr(3) is bonded in a 6-coordinate geometry to two equivalent Pr(1) and six equivalent Co(3) atoms. There are three inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted L-shaped geometry to two equivalent Pr(1), two equivalent Co(3), and two equivalent B(1) atoms. In the second Co site, Co(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Pr(1), two equivalent Pr(2), two equivalent B(1), and two equivalent B(2) atoms. In the third Co site, Co(3) is bonded in a 9-coordinate geometry to three equivalent Pr(3) and six equivalent Co(1) atoms. There are two inequivalent B sites. In the first B site, B(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Co(1), and three equivalent Co(2) atoms. In the second B site, B(2) is bonded in a 6-coordinate geometry to three equivalent Pr(2) and six equivalent Co(2) atoms. is represented by the CIF card [CIF]
data_Pr2Co7B3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.151
_cell_length_b   5.151
_cell_length_c   12.732
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   292.575
_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
  Pr  Pr0  1  0.000  0.000  0.740  1.0
  Pr  Pr1  1  0.000  0.000  0.260  1.0
  Pr  Pr2  1  0.000  0.000  0.500  1.0
  Pr  Pr3  1  0.000  0.000  0.000  1.0
  Co  Co4  1  0.500  0.500  0.157  1.0
  Co  Co5  1  0.500  0.000  0.843  1.0
  Co  Co6  1  0.500  0.500  0.843  1.0
  Co  Co7  1  0.000  0.500  0.157  1.0
  Co  Co8  1  0.500  0.000  0.385  1.0
  Co  Co9  1  0.500  0.500  0.385  1.0
  Co  Co10  1  0.000  0.500  0.385  1.0
  Co  Co11  1  0.500  0.000  0.615  1.0
  Co  Co12  1  0.500  0.500  0.615  1.0
  Co  Co13  1  0.000  0.500  0.615  1.0
  Co  Co14  1  0.333  0.667  0.000  1.0
  Co  Co15  1  0.667  0.333  0.000  1.0
  Co  Co16  1  0.000  0.500  0.843  1.0
  Co  Co17  1  0.500  0.000  0.157  1.0
  B  B18  1  0.333  0.667  0.731  1.0
  B  B19  1  0.667  0.333  0.731  1.0
  B  B20  1  0.667  0.333  0.269  1.0
  B  B21  1  0.333  0.667  0.269  1.0
  B  B22  1  0.667  0.333  0.500  1.0
  B  B23  1  0.333  0.667  0.500  1.0
[/CIF]
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