The compound described by Eu2AgAl3 crystallizes in the trigonal R-3m space group. Eu(1) is bonded in a 16-coordinate geometry to four equivalent Eu(1), three equivalent Ag(1), and nine equivalent Al(1) atoms. Ag(1) is bonded to six equivalent Eu(1) and six equivalent Al(1) atoms to form AgEu6Al6 cuboctahedra that share corners with six equivalent Ag(1)Eu6Al6 cuboctahedra, corners with twelve equivalent Al(1)Eu6Al4Ag2 cuboctahedra, edges with six equivalent Ag(1)Eu6Al6 cuboctahedra, and faces with eighteen equivalent Al(1)Eu6Al4Ag2 cuboctahedra. Al(1) is bonded to six equivalent Eu(1), two equivalent Ag(1), and four equivalent Al(1) atoms to form AlEu6Al4Ag2 cuboctahedra that share corners with four equivalent Ag(1)Eu6Al6 cuboctahedra, corners with fourteen equivalent Al(1)Eu6Al4Ag2 cuboctahedra, edges with six equivalent Al(1)Eu6Al4Ag2 cuboctahedra, faces with six equivalent Ag(1)Eu6Al6 cuboctahedra, and faces with twelve equivalent Al(1)Eu6Al4Ag2 cuboctahedra. is represented by the CIF file [CIF]
data_Eu2Al3Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.681
_cell_length_b   5.681
_cell_length_c   5.681
_cell_angle_alpha   60.638
_cell_angle_beta   60.638
_cell_angle_gamma   60.638
_symmetry_Int_Tables_number   1
_cell_volume   131.506
_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
  Eu  Eu0  1  0.124  0.124  0.124  1.0
  Eu  Eu1  1  0.876  0.876  0.876  1.0
  Al  Al2  1  0.000  0.500  0.500  1.0
  Al  Al3  1  0.500  0.500  0.000  1.0
  Al  Al4  1  0.500  0.000  0.500  1.0
  Ag  Ag5  1  0.500  0.500  0.500  1.0
[/CIF]
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The compound described by Eu2AgAl3 crystallizes in the trigonal R-3m space group. Eu(1) is bonded in a 16-coordinate geometry to four equivalent Eu(1), three equivalent Ag(1), and nine equivalent Al(1) atoms. Ag(1) is bonded to six equivalent Eu(1) and six equivalent Al(1) atoms to form AgEu6Al6 cuboctahedra that share corners with six equivalent Ag(1)Eu6Al6 cuboctahedra, corners with twelve equivalent Al(1)Eu6Al4Ag2 cuboctahedra, edges with six equivalent Ag(1)Eu6Al6 cuboctahedra, and faces with eighteen equivalent Al(1)Eu6Al4Ag2 cuboctahedra. Al(1) is bonded to six equivalent Eu(1), two equivalent Ag(1), and four equivalent Al(1) atoms to form AlEu6Al4Ag2 cuboctahedra that share corners with four equivalent Ag(1)Eu6Al6 cuboctahedra, corners with fourteen equivalent Al(1)Eu6Al4Ag2 cuboctahedra, edges with six equivalent Al(1)Eu6Al4Ag2 cuboctahedra, faces with six equivalent Ag(1)Eu6Al6 cuboctahedra, and faces with twelve equivalent Al(1)Eu6Al4Ag2 cuboctahedra. is represented by the CIF file [CIF]
data_Eu2Al3Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.681
_cell_length_b   5.681
_cell_length_c   5.681
_cell_angle_alpha   60.638
_cell_angle_beta   60.638
_cell_angle_gamma   60.638
_symmetry_Int_Tables_number   1
_cell_volume   131.506
_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
  Eu  Eu0  1  0.124  0.124  0.124  1.0
  Eu  Eu1  1  0.876  0.876  0.876  1.0
  Al  Al2  1  0.000  0.500  0.500  1.0
  Al  Al3  1  0.500  0.500  0.000  1.0
  Al  Al4  1  0.500  0.000  0.500  1.0
  Ag  Ag5  1  0.500  0.500  0.500  1.0
[/CIF]
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