The structure described by Ba3Pr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded to eight equivalent Ba(1) and four equivalent Pr(1) atoms to form distorted BaBa8Pr4 cuboctahedra that share corners with four equivalent Pr(1)Ba12 cuboctahedra, corners with fourteen equivalent Ba(1)Ba8Pr4 cuboctahedra, edges with six equivalent Pr(1)Ba12 cuboctahedra, edges with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra, faces with four equivalent Pr(1)Ba12 cuboctahedra, and faces with sixteen equivalent Ba(1)Ba8Pr4 cuboctahedra. Pr(1) is bonded to twelve equivalent Ba(1) atoms to form PrBa12 cuboctahedra that share corners with six equivalent Pr(1)Ba12 cuboctahedra, corners with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra, edges with eighteen equivalent Ba(1)Ba8Pr4 cuboctahedra, faces with eight equivalent Pr(1)Ba12 cuboctahedra, and faces with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra. is represented by the CIF card [CIF]
data_Ba3Pr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.543
_cell_length_b   8.543
_cell_length_c   6.753
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   426.871
_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
  Ba  Ba0  1  0.172  0.344  0.250  1.0
  Ba  Ba1  1  0.656  0.828  0.250  1.0
  Ba  Ba2  1  0.172  0.828  0.250  1.0
  Ba  Ba3  1  0.828  0.656  0.750  1.0
  Ba  Ba4  1  0.344  0.172  0.750  1.0
  Ba  Ba5  1  0.828  0.172  0.750  1.0
  Pr  Pr6  1  0.333  0.667  0.750  1.0
  Pr  Pr7  1  0.667  0.333  0.250  1.0
[/CIF]
.
The structure described by Ba3Pr is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded to eight equivalent Ba(1) and four equivalent Pr(1) atoms to form distorted BaBa8Pr4 cuboctahedra that share corners with four equivalent Pr(1)Ba12 cuboctahedra, corners with fourteen equivalent Ba(1)Ba8Pr4 cuboctahedra, edges with six equivalent Pr(1)Ba12 cuboctahedra, edges with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra, faces with four equivalent Pr(1)Ba12 cuboctahedra, and faces with sixteen equivalent Ba(1)Ba8Pr4 cuboctahedra. Pr(1) is bonded to twelve equivalent Ba(1) atoms to form PrBa12 cuboctahedra that share corners with six equivalent Pr(1)Ba12 cuboctahedra, corners with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra, edges with eighteen equivalent Ba(1)Ba8Pr4 cuboctahedra, faces with eight equivalent Pr(1)Ba12 cuboctahedra, and faces with twelve equivalent Ba(1)Ba8Pr4 cuboctahedra. is represented by the CIF card [CIF]
data_Ba3Pr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.543
_cell_length_b   8.543
_cell_length_c   6.753
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   426.871
_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
  Ba  Ba0  1  0.172  0.344  0.250  1.0
  Ba  Ba1  1  0.656  0.828  0.250  1.0
  Ba  Ba2  1  0.172  0.828  0.250  1.0
  Ba  Ba3  1  0.828  0.656  0.750  1.0
  Ba  Ba4  1  0.344  0.172  0.750  1.0
  Ba  Ba5  1  0.828  0.172  0.750  1.0
  Pr  Pr6  1  0.333  0.667  0.750  1.0
  Pr  Pr7  1  0.667  0.333  0.250  1.0
[/CIF]
.