The crystal structure described by Pr2Zn5Pb crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Zn(3), six equivalent Zn(1), six equivalent Zn(2), and two equivalent Pb(1) atoms. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), four equivalent Zn(3), and four equivalent Pb(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to one Pr(2), three equivalent Pr(1), one Zn(1), two equivalent Zn(3), and three equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded in a 1-coordinate geometry to two equivalent Pr(2), three equivalent Pr(1), three equivalent Zn(1), and one Pb(1) atom. In the third Zn site, Zn(3) is bonded in a distorted single-bond geometry to one Pr(1), four equivalent Pr(2), four equivalent Zn(1), and one Pb(1) atom. Pb(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Zn(3), and two equivalent Zn(2) atoms. is represented by the CIF file [CIF]
data_Pr2Zn5Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.651
_cell_length_b   8.651
_cell_length_c   9.116
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   150.047
_symmetry_Int_Tables_number   1
_cell_volume   340.617
_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  0.205  0.795  0.250  1.0
  Pr  Pr1  1  0.795  0.205  0.750  1.0
  Pr  Pr2  1  0.000  0.000  0.500  1.0
  Pr  Pr3  1  0.000  0.000  0.000  1.0
  Zn  Zn4  1  0.815  0.185  0.390  1.0
  Zn  Zn5  1  0.185  0.815  0.610  1.0
  Zn  Zn6  1  0.815  0.185  0.110  1.0
  Zn  Zn7  1  0.185  0.815  0.890  1.0
  Zn  Zn8  1  0.659  0.341  0.487  1.0
  Zn  Zn9  1  0.341  0.659  0.513  1.0
  Zn  Zn10  1  0.659  0.341  0.013  1.0
  Zn  Zn11  1  0.341  0.659  0.987  1.0
  Zn  Zn12  1  0.391  0.609  0.250  1.0
  Zn  Zn13  1  0.609  0.391  0.750  1.0
  Pb  Pb14  1  0.554  0.446  0.250  1.0
  Pb  Pb15  1  0.446  0.554  0.750  1.0
[/CIF]
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The crystal structure described by Pr2Zn5Pb crystallizes in the orthorhombic Cmcm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 15-coordinate geometry to one Zn(3), six equivalent Zn(1), six equivalent Zn(2), and two equivalent Pb(1) atoms. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Zn(1), four equivalent Zn(2), four equivalent Zn(3), and four equivalent Pb(1) atoms. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 10-coordinate geometry to one Pr(2), three equivalent Pr(1), one Zn(1), two equivalent Zn(3), and three equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded in a 1-coordinate geometry to two equivalent Pr(2), three equivalent Pr(1), three equivalent Zn(1), and one Pb(1) atom. In the third Zn site, Zn(3) is bonded in a distorted single-bond geometry to one Pr(1), four equivalent Pr(2), four equivalent Zn(1), and one Pb(1) atom. Pb(1) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Zn(3), and two equivalent Zn(2) atoms. is represented by the CIF file [CIF]
data_Pr2Zn5Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.651
_cell_length_b   8.651
_cell_length_c   9.116
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   150.047
_symmetry_Int_Tables_number   1
_cell_volume   340.617
_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  0.205  0.795  0.250  1.0
  Pr  Pr1  1  0.795  0.205  0.750  1.0
  Pr  Pr2  1  0.000  0.000  0.500  1.0
  Pr  Pr3  1  0.000  0.000  0.000  1.0
  Zn  Zn4  1  0.815  0.185  0.390  1.0
  Zn  Zn5  1  0.185  0.815  0.610  1.0
  Zn  Zn6  1  0.815  0.185  0.110  1.0
  Zn  Zn7  1  0.185  0.815  0.890  1.0
  Zn  Zn8  1  0.659  0.341  0.487  1.0
  Zn  Zn9  1  0.341  0.659  0.513  1.0
  Zn  Zn10  1  0.659  0.341  0.013  1.0
  Zn  Zn11  1  0.341  0.659  0.987  1.0
  Zn  Zn12  1  0.391  0.609  0.250  1.0
  Zn  Zn13  1  0.609  0.391  0.750  1.0
  Pb  Pb14  1  0.554  0.446  0.250  1.0
  Pb  Pb15  1  0.446  0.554  0.750  1.0
[/CIF]
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