The compound described by AcEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Eu(1) atoms to form AcEu12 cuboctahedra that share corners with six equivalent Ac(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Ac4Eu8 cuboctahedra, faces with eight equivalent Ac(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra. Eu(1) is bonded to four equivalent Ac(1) and eight equivalent Eu(1) atoms to form EuAc4Eu8 cuboctahedra that share corners with four equivalent Ac(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Ac4Eu8 cuboctahedra, edges with six equivalent Ac(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra, faces with four equivalent Ac(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Ac4Eu8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcEu3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.000
_cell_length_b   8.000
_cell_length_c   6.441
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   357.000
_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
  Ac  Ac0  1  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Eu  Eu2  1  0.167  0.335  0.250  1.0
  Eu  Eu3  1  0.665  0.833  0.250  1.0
  Eu  Eu4  1  0.167  0.833  0.250  1.0
  Eu  Eu5  1  0.833  0.665  0.750  1.0
  Eu  Eu6  1  0.335  0.167  0.750  1.0
  Eu  Eu7  1  0.833  0.167  0.750  1.0
[/CIF]
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The compound described by AcEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ac(1) is bonded to twelve equivalent Eu(1) atoms to form AcEu12 cuboctahedra that share corners with six equivalent Ac(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Ac4Eu8 cuboctahedra, faces with eight equivalent Ac(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra. Eu(1) is bonded to four equivalent Ac(1) and eight equivalent Eu(1) atoms to form EuAc4Eu8 cuboctahedra that share corners with four equivalent Ac(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Ac4Eu8 cuboctahedra, edges with six equivalent Ac(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Ac4Eu8 cuboctahedra, faces with four equivalent Ac(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Ac4Eu8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_AcEu3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.000
_cell_length_b   8.000
_cell_length_c   6.441
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   357.000
_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
  Ac  Ac0  1  0.333  0.667  0.750  1.0
  Ac  Ac1  1  0.667  0.333  0.250  1.0
  Eu  Eu2  1  0.167  0.335  0.250  1.0
  Eu  Eu3  1  0.665  0.833  0.250  1.0
  Eu  Eu4  1  0.167  0.833  0.250  1.0
  Eu  Eu5  1  0.833  0.665  0.750  1.0
  Eu  Eu6  1  0.335  0.167  0.750  1.0
  Eu  Eu7  1  0.833  0.167  0.750  1.0
[/CIF]
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