The compound described by SrPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve Pm(1,1) atoms to form SrPm12 cuboctahedra that share corners with six equivalent Sr(1)Pm12 cuboctahedra; corners with twelve equivalent Pm(1)Sr4Pm8 cuboctahedra; edges with eighteen Pm(1,1)Sr4Pm8 cuboctahedra; faces with eight equivalent Sr(1)Pm12 cuboctahedra; and faces with twelve Pm(1,1)Sr4Pm8 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Sr(1) and eight Pm(1,1) atoms to form distorted PmSr4Pm8 cuboctahedra that share corners with four equivalent Sr(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Sr4Pm8 cuboctahedra; edges with six equivalent Sr(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Sr4Pm8 cuboctahedra; faces with four equivalent Sr(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1)Sr4Pm8 cuboctahedra. In the second Pm site, Pm(1) is bonded to four equivalent Sr(1) and eight equivalent Pm(1) atoms to form distorted PmSr4Pm8 cuboctahedra that share corners with four equivalent Sr(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Sr4Pm8 cuboctahedra; edges with six equivalent Sr(1)Pm12 cuboctahedra; edges with twelve equivalent Pm(1)Sr4Pm8 cuboctahedra; faces with four equivalent Sr(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1)Sr4Pm8 cuboctahedra. is represented by the CIF card [CIF]
data_SrPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.612
_cell_length_b   7.612
_cell_length_c   6.028
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   302.469
_cell_formula_units_Z   2
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
  Sr  Sr0  1  0.333  0.667  0.750  1.0
  Sr  Sr1  1  0.667  0.333  0.250  1.0
  Pm  Pm2  1  0.160  0.320  0.250  1.0
  Pm  Pm3  1  0.680  0.840  0.250  1.0
  Pm  Pm4  1  0.160  0.840  0.250  1.0
  Pm  Pm5  1  0.840  0.680  0.750  1.0
  Pm  Pm6  1  0.320  0.160  0.750  1.0
  Pm  Pm7  1  0.840  0.160  0.750  1.0
[/CIF]
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The compound described by SrPm3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Sr(1) is bonded to twelve Pm(1,1) atoms to form SrPm12 cuboctahedra that share corners with six equivalent Sr(1)Pm12 cuboctahedra; corners with twelve equivalent Pm(1)Sr4Pm8 cuboctahedra; edges with eighteen Pm(1,1)Sr4Pm8 cuboctahedra; faces with eight equivalent Sr(1)Pm12 cuboctahedra; and faces with twelve Pm(1,1)Sr4Pm8 cuboctahedra. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded to four equivalent Sr(1) and eight Pm(1,1) atoms to form distorted PmSr4Pm8 cuboctahedra that share corners with four equivalent Sr(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Sr4Pm8 cuboctahedra; edges with six equivalent Sr(1)Pm12 cuboctahedra; edges with twelve Pm(1,1)Sr4Pm8 cuboctahedra; faces with four equivalent Sr(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1)Sr4Pm8 cuboctahedra. In the second Pm site, Pm(1) is bonded to four equivalent Sr(1) and eight equivalent Pm(1) atoms to form distorted PmSr4Pm8 cuboctahedra that share corners with four equivalent Sr(1)Pm12 cuboctahedra; corners with fourteen Pm(1,1)Sr4Pm8 cuboctahedra; edges with six equivalent Sr(1)Pm12 cuboctahedra; edges with twelve equivalent Pm(1)Sr4Pm8 cuboctahedra; faces with four equivalent Sr(1)Pm12 cuboctahedra; and faces with sixteen Pm(1,1)Sr4Pm8 cuboctahedra. is represented by the CIF card [CIF]
data_SrPm3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.612
_cell_length_b   7.612
_cell_length_c   6.028
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   302.469
_cell_formula_units_Z   2
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
  Sr  Sr0  1  0.333  0.667  0.750  1.0
  Sr  Sr1  1  0.667  0.333  0.250  1.0
  Pm  Pm2  1  0.160  0.320  0.250  1.0
  Pm  Pm3  1  0.680  0.840  0.250  1.0
  Pm  Pm4  1  0.160  0.840  0.250  1.0
  Pm  Pm5  1  0.840  0.680  0.750  1.0
  Pm  Pm6  1  0.320  0.160  0.750  1.0
  Pm  Pm7  1  0.840  0.160  0.750  1.0
[/CIF]
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