The compound described by CaEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded to twelve equivalent Eu(1) atoms to form CaEu12 cuboctahedra that share corners with six equivalent Ca(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Ca4Eu8 cuboctahedra, faces with eight equivalent Ca(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra. Eu(1) is bonded to four equivalent Ca(1) and eight equivalent Eu(1) atoms to form EuCa4Eu8 cuboctahedra that share corners with four equivalent Ca(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Ca4Eu8 cuboctahedra, edges with six equivalent Ca(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra, faces with four equivalent Ca(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Ca4Eu8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaEu3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.998
_cell_length_b   7.998
_cell_length_c   6.378
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   353.337
_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
  Ca  Ca0  1  0.333  0.667  0.750  1.0
  Ca  Ca1  1  0.667  0.333  0.250  1.0
  Eu  Eu2  1  0.166  0.332  0.250  1.0
  Eu  Eu3  1  0.668  0.834  0.250  1.0
  Eu  Eu4  1  0.166  0.834  0.250  1.0
  Eu  Eu5  1  0.834  0.668  0.750  1.0
  Eu  Eu6  1  0.332  0.166  0.750  1.0
  Eu  Eu7  1  0.834  0.166  0.750  1.0
[/CIF]
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The compound described by CaEu3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Ca(1) is bonded to twelve equivalent Eu(1) atoms to form CaEu12 cuboctahedra that share corners with six equivalent Ca(1)Eu12 cuboctahedra, corners with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra, edges with eighteen equivalent Eu(1)Ca4Eu8 cuboctahedra, faces with eight equivalent Ca(1)Eu12 cuboctahedra, and faces with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra. Eu(1) is bonded to four equivalent Ca(1) and eight equivalent Eu(1) atoms to form EuCa4Eu8 cuboctahedra that share corners with four equivalent Ca(1)Eu12 cuboctahedra, corners with fourteen equivalent Eu(1)Ca4Eu8 cuboctahedra, edges with six equivalent Ca(1)Eu12 cuboctahedra, edges with twelve equivalent Eu(1)Ca4Eu8 cuboctahedra, faces with four equivalent Ca(1)Eu12 cuboctahedra, and faces with sixteen equivalent Eu(1)Ca4Eu8 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_CaEu3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.998
_cell_length_b   7.998
_cell_length_c   6.378
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   353.337
_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
  Ca  Ca0  1  0.333  0.667  0.750  1.0
  Ca  Ca1  1  0.667  0.333  0.250  1.0
  Eu  Eu2  1  0.166  0.332  0.250  1.0
  Eu  Eu3  1  0.668  0.834  0.250  1.0
  Eu  Eu4  1  0.166  0.834  0.250  1.0
  Eu  Eu5  1  0.834  0.668  0.750  1.0
  Eu  Eu6  1  0.332  0.166  0.750  1.0
  Eu  Eu7  1  0.834  0.166  0.750  1.0
[/CIF]
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