The structure described by AcPr3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. Ac(1) is bonded to four equivalent Pr(2) and eight equivalent Pr(1) atoms to form AcPr12 cuboctahedra that share corners with four equivalent Ac(1)Pr12 cuboctahedra, corners with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, edges with eight equivalent Ac(1)Pr12 cuboctahedra, edges with sixteen equivalent Pr(1)Ac4Pr8 cuboctahedra, faces with four equivalent Ac(1)Pr12 cuboctahedra, faces with six equivalent Pr(2)Ac4Pr8 cuboctahedra, and faces with eight equivalent Pr(1)Ac4Pr8 cuboctahedra. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Ac(1), four equivalent Pr(1), and four equivalent Pr(2) atoms to form PrAc4Pr8 cuboctahedra that share corners with twelve equivalent Pr(1)Ac4Pr8 cuboctahedra, edges with eight equivalent Ac(1)Pr12 cuboctahedra, edges with eight equivalent Pr(1)Ac4Pr8 cuboctahedra, edges with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, faces with four equivalent Ac(1)Pr12 cuboctahedra, faces with four equivalent Pr(2)Ac4Pr8 cuboctahedra, and faces with ten equivalent Pr(1)Ac4Pr8 cuboctahedra. In the second Pr site, Pr(2) is bonded to four equivalent Ac(1) and eight equivalent Pr(1) atoms to form PrAc4Pr8 cuboctahedra that share corners with four equivalent Pr(2)Ac4Pr8 cuboctahedra, corners with eight equivalent Ac(1)Pr12 cuboctahedra, edges with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, edges with sixteen equivalent Pr(1)Ac4Pr8 cuboctahedra, faces with four equivalent Pr(2)Ac4Pr8 cuboctahedra, faces with six equivalent Ac(1)Pr12 cuboctahedra, and faces with eight equivalent Pr(1)Ac4Pr8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcPr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.575
_cell_length_b   6.575
_cell_length_c   6.575
_cell_angle_alpha   131.760
_cell_angle_beta   131.760
_cell_angle_gamma   70.609
_symmetry_Int_Tables_number   1
_cell_volume   154.934
_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
  Ac  Ac0  1  0.000  0.000  0.000  1.0
  Pr  Pr1  1  0.750  0.250  0.500  1.0
  Pr  Pr2  1  0.250  0.750  0.500  1.0
  Pr  Pr3  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by AcPr3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. Ac(1) is bonded to four equivalent Pr(2) and eight equivalent Pr(1) atoms to form AcPr12 cuboctahedra that share corners with four equivalent Ac(1)Pr12 cuboctahedra, corners with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, edges with eight equivalent Ac(1)Pr12 cuboctahedra, edges with sixteen equivalent Pr(1)Ac4Pr8 cuboctahedra, faces with four equivalent Ac(1)Pr12 cuboctahedra, faces with six equivalent Pr(2)Ac4Pr8 cuboctahedra, and faces with eight equivalent Pr(1)Ac4Pr8 cuboctahedra. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded to four equivalent Ac(1), four equivalent Pr(1), and four equivalent Pr(2) atoms to form PrAc4Pr8 cuboctahedra that share corners with twelve equivalent Pr(1)Ac4Pr8 cuboctahedra, edges with eight equivalent Ac(1)Pr12 cuboctahedra, edges with eight equivalent Pr(1)Ac4Pr8 cuboctahedra, edges with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, faces with four equivalent Ac(1)Pr12 cuboctahedra, faces with four equivalent Pr(2)Ac4Pr8 cuboctahedra, and faces with ten equivalent Pr(1)Ac4Pr8 cuboctahedra. In the second Pr site, Pr(2) is bonded to four equivalent Ac(1) and eight equivalent Pr(1) atoms to form PrAc4Pr8 cuboctahedra that share corners with four equivalent Pr(2)Ac4Pr8 cuboctahedra, corners with eight equivalent Ac(1)Pr12 cuboctahedra, edges with eight equivalent Pr(2)Ac4Pr8 cuboctahedra, edges with sixteen equivalent Pr(1)Ac4Pr8 cuboctahedra, faces with four equivalent Pr(2)Ac4Pr8 cuboctahedra, faces with six equivalent Ac(1)Pr12 cuboctahedra, and faces with eight equivalent Pr(1)Ac4Pr8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcPr3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.575
_cell_length_b   6.575
_cell_length_c   6.575
_cell_angle_alpha   131.760
_cell_angle_beta   131.760
_cell_angle_gamma   70.609
_symmetry_Int_Tables_number   1
_cell_volume   154.934
_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
  Ac  Ac0  1  0.000  0.000  0.000  1.0
  Pr  Pr1  1  0.750  0.250  0.500  1.0
  Pr  Pr2  1  0.250  0.750  0.500  1.0
  Pr  Pr3  1  0.500  0.500  0.000  1.0
[/CIF]
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