The structure described by Pr3(NiGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to eight equivalent Ni(1) and four equivalent Ge(2) atoms to form a mixture of edge and face-sharing PrNi8Ge4 cuboctahedra. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), four equivalent Pr(1), one Ni(1), and two equivalent Ge(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Pr(2) and four equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Ni(2), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Pr3(NiGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.433
_cell_length_b   12.433
_cell_length_c   12.433
_cell_angle_alpha   160.772
_cell_angle_beta   160.608
_cell_angle_gamma   27.441
_symmetry_Int_Tables_number   1
_cell_volume   210.060
_cell_formula_units_Z   1
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  0.000  1.0
  Pr  Pr1  1  0.851  0.351  0.500  1.0
  Pr  Pr2  1  0.149  0.649  0.500  1.0
  Ni  Ni3  1  0.550  0.550  0.000  1.0
  Ni  Ni4  1  0.450  0.450  0.000  1.0
  Ni  Ni5  1  0.699  0.199  0.500  1.0
  Ni  Ni6  1  0.301  0.801  0.500  1.0
  Ge  Ge7  1  0.250  0.250  0.000  1.0
  Ge  Ge8  1  0.600  0.100  0.500  1.0
  Ge  Ge9  1  0.400  0.900  0.500  1.0
  Ge  Ge10  1  0.750  0.750  0.000  1.0
[/CIF]
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The structure described by Pr3(NiGe)4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to eight equivalent Ni(1) and four equivalent Ge(2) atoms to form a mixture of edge and face-sharing PrNi8Ge4 cuboctahedra. In the second Pr site, Pr(2) is bonded in a 14-coordinate geometry to two equivalent Ni(1), four equivalent Ni(2), four equivalent Ge(1), and four equivalent Ge(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 9-coordinate geometry to two equivalent Pr(2), four equivalent Pr(1), one Ni(1), and two equivalent Ge(2) atoms. In the second Ni site, Ni(2) is bonded in a 9-coordinate geometry to four equivalent Pr(2), one Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to four equivalent Pr(2) and four equivalent Ni(2) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Pr(1), four equivalent Pr(2), one Ni(2), and two equivalent Ni(1) atoms. is represented by the CIF file [CIF]
data_Pr3(NiGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.433
_cell_length_b   12.433
_cell_length_c   12.433
_cell_angle_alpha   160.772
_cell_angle_beta   160.608
_cell_angle_gamma   27.441
_symmetry_Int_Tables_number   1
_cell_volume   210.060
_cell_formula_units_Z   1
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  0.000  1.0
  Pr  Pr1  1  0.851  0.351  0.500  1.0
  Pr  Pr2  1  0.149  0.649  0.500  1.0
  Ni  Ni3  1  0.550  0.550  0.000  1.0
  Ni  Ni4  1  0.450  0.450  0.000  1.0
  Ni  Ni5  1  0.699  0.199  0.500  1.0
  Ni  Ni6  1  0.301  0.801  0.500  1.0
  Ge  Ge7  1  0.250  0.250  0.000  1.0
  Ge  Ge8  1  0.600  0.100  0.500  1.0
  Ge  Ge9  1  0.400  0.900  0.500  1.0
  Ge  Ge10  1  0.750  0.750  0.000  1.0
[/CIF]
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