The material structure described by MgPr4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms to form a mixture of face and corner-sharing MgPr9Mg3 cuboctahedra. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Rh(1) atoms. In the second Pr site, Pr(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. In the third Pr site, Pr(3) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms. is represented by the CIF card [CIF]
data_Pr4MgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.076
_cell_length_b   10.076
_cell_length_c   10.077
_cell_angle_alpha   60.001
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   723.445
_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  0.346  0.346  0.346  1.0
  Pr  Pr1  1  0.346  0.346  0.961  1.0
  Pr  Pr2  1  0.346  0.961  0.346  1.0
  Pr  Pr3  1  0.961  0.346  0.346  1.0
  Pr  Pr4  1  0.812  0.188  0.188  1.0
  Pr  Pr5  1  0.188  0.812  0.812  1.0
  Pr  Pr6  1  0.188  0.812  0.188  1.0
  Pr  Pr7  1  0.812  0.188  0.812  1.0
  Pr  Pr8  1  0.188  0.188  0.812  1.0
  Pr  Pr9  1  0.812  0.812  0.188  1.0
  Pr  Pr10  1  0.938  0.562  0.562  1.0
  Pr  Pr11  1  0.562  0.938  0.938  1.0
  Pr  Pr12  1  0.562  0.938  0.562  1.0
  Pr  Pr13  1  0.938  0.562  0.938  1.0
  Pr  Pr14  1  0.562  0.562  0.938  1.0
  Pr  Pr15  1  0.938  0.938  0.562  1.0
  Mg  Mg16  1  0.579  0.579  0.579  1.0
  Mg  Mg17  1  0.579  0.579  0.264  1.0
  Mg  Mg18  1  0.579  0.264  0.579  1.0
  Mg  Mg19  1  0.264  0.579  0.579  1.0
  Rh  Rh20  1  0.142  0.142  0.142  1.0
  Rh  Rh21  1  0.142  0.142  0.575  1.0
  Rh  Rh22  1  0.142  0.575  0.142  1.0
  Rh  Rh23  1  0.575  0.142  0.142  1.0
[/CIF]
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The material structure described by MgPr4Rh crystallizes in the cubic F-43m space group. Mg(1) is bonded to three equivalent Mg(1), three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms to form a mixture of face and corner-sharing MgPr9Mg3 cuboctahedra. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 3-coordinate geometry to three equivalent Mg(1) and three equivalent Rh(1) atoms. In the second Pr site, Pr(2) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. In the third Pr site, Pr(3) is bonded in a 4-coordinate geometry to two equivalent Mg(1) and two equivalent Rh(1) atoms. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Pr(1), three equivalent Pr(2), and three equivalent Pr(3) atoms. is represented by the CIF card [CIF]
data_Pr4MgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.076
_cell_length_b   10.076
_cell_length_c   10.077
_cell_angle_alpha   60.001
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   723.445
_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  0.346  0.346  0.346  1.0
  Pr  Pr1  1  0.346  0.346  0.961  1.0
  Pr  Pr2  1  0.346  0.961  0.346  1.0
  Pr  Pr3  1  0.961  0.346  0.346  1.0
  Pr  Pr4  1  0.812  0.188  0.188  1.0
  Pr  Pr5  1  0.188  0.812  0.812  1.0
  Pr  Pr6  1  0.188  0.812  0.188  1.0
  Pr  Pr7  1  0.812  0.188  0.812  1.0
  Pr  Pr8  1  0.188  0.188  0.812  1.0
  Pr  Pr9  1  0.812  0.812  0.188  1.0
  Pr  Pr10  1  0.938  0.562  0.562  1.0
  Pr  Pr11  1  0.562  0.938  0.938  1.0
  Pr  Pr12  1  0.562  0.938  0.562  1.0
  Pr  Pr13  1  0.938  0.562  0.938  1.0
  Pr  Pr14  1  0.562  0.562  0.938  1.0
  Pr  Pr15  1  0.938  0.938  0.562  1.0
  Mg  Mg16  1  0.579  0.579  0.579  1.0
  Mg  Mg17  1  0.579  0.579  0.264  1.0
  Mg  Mg18  1  0.579  0.264  0.579  1.0
  Mg  Mg19  1  0.264  0.579  0.579  1.0
  Rh  Rh20  1  0.142  0.142  0.142  1.0
  Rh  Rh21  1  0.142  0.142  0.575  1.0
  Rh  Rh22  1  0.142  0.575  0.142  1.0
  Rh  Rh23  1  0.575  0.142  0.142  1.0
[/CIF]
.