The structure described by Pm3La is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Pm(1), four equivalent Pm(2), and four equivalent La(1) atoms to form PmLa4Pm8 cuboctahedra that share corners with twelve equivalent Pm(1)La4Pm8 cuboctahedra, edges with eight equivalent Pm(1)La4Pm8 cuboctahedra, edges with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with eight equivalent La(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)La4Pm8 cuboctahedra, faces with four equivalent La(1)Pm12 cuboctahedra, and faces with ten equivalent Pm(1)La4Pm8 cuboctahedra. In the second Pm site, Pm(2) is bonded to eight equivalent Pm(1) and four equivalent La(1) atoms to form PmLa4Pm8 cuboctahedra that share corners with four equivalent Pm(2)La4Pm8 cuboctahedra, corners with eight equivalent La(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with sixteen equivalent Pm(1)La4Pm8 cuboctahedra, faces with four equivalent Pm(2)La4Pm8 cuboctahedra, faces with six equivalent La(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)La4Pm8 cuboctahedra. La(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form LaPm12 cuboctahedra that share corners with four equivalent La(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with eight equivalent La(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)La4Pm8 cuboctahedra, faces with four equivalent La(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)La4Pm8 cuboctahedra, and faces with eight equivalent Pm(1)La4Pm8 cuboctahedra. is represented by the CIF card [CIF]
data_LaPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.362
_cell_length_b   6.362
_cell_length_c   6.362
_cell_angle_alpha   131.453
_cell_angle_beta   131.453
_cell_angle_gamma   71.094
_symmetry_Int_Tables_number   1
_cell_volume   141.642
_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
  La  La0  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 Pm3La is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Pm(1), four equivalent Pm(2), and four equivalent La(1) atoms to form PmLa4Pm8 cuboctahedra that share corners with twelve equivalent Pm(1)La4Pm8 cuboctahedra, edges with eight equivalent Pm(1)La4Pm8 cuboctahedra, edges with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with eight equivalent La(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)La4Pm8 cuboctahedra, faces with four equivalent La(1)Pm12 cuboctahedra, and faces with ten equivalent Pm(1)La4Pm8 cuboctahedra. In the second Pm site, Pm(2) is bonded to eight equivalent Pm(1) and four equivalent La(1) atoms to form PmLa4Pm8 cuboctahedra that share corners with four equivalent Pm(2)La4Pm8 cuboctahedra, corners with eight equivalent La(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with sixteen equivalent Pm(1)La4Pm8 cuboctahedra, faces with four equivalent Pm(2)La4Pm8 cuboctahedra, faces with six equivalent La(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)La4Pm8 cuboctahedra. La(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form LaPm12 cuboctahedra that share corners with four equivalent La(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)La4Pm8 cuboctahedra, edges with eight equivalent La(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)La4Pm8 cuboctahedra, faces with four equivalent La(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)La4Pm8 cuboctahedra, and faces with eight equivalent Pm(1)La4Pm8 cuboctahedra. is represented by the CIF card [CIF]
data_LaPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.362
_cell_length_b   6.362
_cell_length_c   6.362
_cell_angle_alpha   131.453
_cell_angle_beta   131.453
_cell_angle_gamma   71.094
_symmetry_Int_Tables_number   1
_cell_volume   141.642
_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
  La  La0  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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