The material described by TmPm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Tm(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form TmPm12 cuboctahedra that share corners with four equivalent Tm(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)Pm8Tm4 cuboctahedra, faces with four equivalent Tm(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)Pm8Tm4 cuboctahedra, and faces with eight equivalent Pm(1)Pm8Tm4 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Tm(1), four equivalent Pm(1), and four equivalent Pm(2) atoms to form PmPm8Tm4 cuboctahedra that share corners with twelve equivalent Pm(1)Pm8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Pm12 cuboctahedra, edges with eight equivalent Pm(1)Pm8Tm4 cuboctahedra, edges with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, faces with four equivalent Tm(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)Pm8Tm4 cuboctahedra, and faces with ten equivalent Pm(1)Pm8Tm4 cuboctahedra. In the second Pm site, Pm(2) is bonded to four equivalent Tm(1) and eight equivalent Pm(1) atoms to form PmPm8Tm4 cuboctahedra that share corners with four equivalent Pm(2)Pm8Tm4 cuboctahedra, corners with eight equivalent Tm(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, edges with sixteen equivalent Pm(1)Pm8Tm4 cuboctahedra, faces with four equivalent Pm(2)Pm8Tm4 cuboctahedra, faces with six equivalent Tm(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)Pm8Tm4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pm3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.240
_cell_length_b   6.240
_cell_length_c   6.240
_cell_angle_alpha   131.543
_cell_angle_beta   131.543
_cell_angle_gamma   70.952
_symmetry_Int_Tables_number   1
_cell_volume   133.305
_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
  Pm  Pm0  1  0.750  0.250  0.500  1.0
  Pm  Pm1  1  0.250  0.750  0.500  1.0
  Pm  Pm2  1  0.500  0.500  0.000  1.0
  Tm  Tm3  1  0.000  0.000  0.000  1.0
[/CIF]
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The material described by TmPm3 is beta Cu3Ti-like structured and crystallizes in the tetragonal I4/mmm space group. Tm(1) is bonded to four equivalent Pm(2) and eight equivalent Pm(1) atoms to form TmPm12 cuboctahedra that share corners with four equivalent Tm(1)Pm12 cuboctahedra, corners with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Pm12 cuboctahedra, edges with sixteen equivalent Pm(1)Pm8Tm4 cuboctahedra, faces with four equivalent Tm(1)Pm12 cuboctahedra, faces with six equivalent Pm(2)Pm8Tm4 cuboctahedra, and faces with eight equivalent Pm(1)Pm8Tm4 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Tm(1), four equivalent Pm(1), and four equivalent Pm(2) atoms to form PmPm8Tm4 cuboctahedra that share corners with twelve equivalent Pm(1)Pm8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Pm12 cuboctahedra, edges with eight equivalent Pm(1)Pm8Tm4 cuboctahedra, edges with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, faces with four equivalent Tm(1)Pm12 cuboctahedra, faces with four equivalent Pm(2)Pm8Tm4 cuboctahedra, and faces with ten equivalent Pm(1)Pm8Tm4 cuboctahedra. In the second Pm site, Pm(2) is bonded to four equivalent Tm(1) and eight equivalent Pm(1) atoms to form PmPm8Tm4 cuboctahedra that share corners with four equivalent Pm(2)Pm8Tm4 cuboctahedra, corners with eight equivalent Tm(1)Pm12 cuboctahedra, edges with eight equivalent Pm(2)Pm8Tm4 cuboctahedra, edges with sixteen equivalent Pm(1)Pm8Tm4 cuboctahedra, faces with four equivalent Pm(2)Pm8Tm4 cuboctahedra, faces with six equivalent Tm(1)Pm12 cuboctahedra, and faces with eight equivalent Pm(1)Pm8Tm4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Pm3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.240
_cell_length_b   6.240
_cell_length_c   6.240
_cell_angle_alpha   131.543
_cell_angle_beta   131.543
_cell_angle_gamma   70.952
_symmetry_Int_Tables_number   1
_cell_volume   133.305
_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
  Pm  Pm0  1  0.750  0.250  0.500  1.0
  Pm  Pm1  1  0.250  0.750  0.500  1.0
  Pm  Pm2  1  0.500  0.500  0.000  1.0
  Tm  Tm3  1  0.000  0.000  0.000  1.0
[/CIF]
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