The structure described by YbPm3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. Yb(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form YbPm12 cuboctahedra that share corners with four equivalent Yb(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, edges with eight equivalent Yb(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)Yb4Pm8 cuboctahedra, faces with four equivalent Yb(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)Yb4Pm8 cuboctahedra, and faces with eight equivalent Pm(1)Yb4Pm8 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Yb(1), four equivalent Pm(1), and four equivalent Pm(2) atoms to form PmYb4Pm8 cuboctahedra that share corners with twelve equivalent Pm(1)Yb4Pm8 cuboctahedra, edges with eight equivalent Yb(1)Pm12 cuboctahedra, edges with eight equivalent Pm(1)Yb4Pm8 cuboctahedra, edges with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, faces with four equivalent Yb(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)Yb4Pm8 cuboctahedra, and faces with ten equivalent Pm(1)Yb4Pm8 cuboctahedra. In the second Pm site, Pm(2) is bonded to four equivalent Yb(1) and eight equivalent Pm(1) atoms to form PmYb4Pm8 cuboctahedra that share corners with four equivalent Pm(2)Yb4Pm8 cuboctahedra, corners with eight equivalent Yb(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, edges with sixteen equivalent Pm(1)Yb4Pm8 cuboctahedra, faces with four equivalent Pm(2)Yb4Pm8 cuboctahedra, faces with six equivalent Yb(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)Yb4Pm8 cuboctahedra. is represented by the CIF file [CIF]
data_YbPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.339
_cell_length_b   6.339
_cell_length_c   6.339
_cell_angle_alpha   131.832
_cell_angle_beta   131.832
_cell_angle_gamma   70.495
_symmetry_Int_Tables_number   1
_cell_volume   138.539
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Pm  Pm1  1  0.750  0.250  0.500  1.0
  Pm  Pm2  1  0.250  0.750  0.500  1.0
  Pm  Pm3  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by YbPm3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. Yb(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form YbPm12 cuboctahedra that share corners with four equivalent Yb(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, edges with eight equivalent Yb(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)Yb4Pm8 cuboctahedra, faces with four equivalent Yb(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)Yb4Pm8 cuboctahedra, and faces with eight equivalent Pm(1)Yb4Pm8 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Yb(1), four equivalent Pm(1), and four equivalent Pm(2) atoms to form PmYb4Pm8 cuboctahedra that share corners with twelve equivalent Pm(1)Yb4Pm8 cuboctahedra, edges with eight equivalent Yb(1)Pm12 cuboctahedra, edges with eight equivalent Pm(1)Yb4Pm8 cuboctahedra, edges with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, faces with four equivalent Yb(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)Yb4Pm8 cuboctahedra, and faces with ten equivalent Pm(1)Yb4Pm8 cuboctahedra. In the second Pm site, Pm(2) is bonded to four equivalent Yb(1) and eight equivalent Pm(1) atoms to form PmYb4Pm8 cuboctahedra that share corners with four equivalent Pm(2)Yb4Pm8 cuboctahedra, corners with eight equivalent Yb(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)Yb4Pm8 cuboctahedra, edges with sixteen equivalent Pm(1)Yb4Pm8 cuboctahedra, faces with four equivalent Pm(2)Yb4Pm8 cuboctahedra, faces with six equivalent Yb(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)Yb4Pm8 cuboctahedra. is represented by the CIF file [CIF]
data_YbPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.339
_cell_length_b   6.339
_cell_length_c   6.339
_cell_angle_alpha   131.832
_cell_angle_beta   131.832
_cell_angle_gamma   70.495
_symmetry_Int_Tables_number   1
_cell_volume   138.539
_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
  Yb  Yb0  1  0.000  0.000  0.000  1.0
  Pm  Pm1  1  0.750  0.250  0.500  1.0
  Pm  Pm2  1  0.250  0.750  0.500  1.0
  Pm  Pm3  1  0.500  0.500  0.000  1.0
[/CIF]
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