The material structure described by Eu2(AgAl)5 crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted hexagonal planar geometry to two equivalent Ag(1) and four equivalent Ag(2) atoms. In the second Eu site, Eu(2) is bonded in a 18-coordinate geometry to two equivalent Ag(2), four equivalent Ag(1), four equivalent Ag(3), and eight equivalent Al(2) atoms. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 9-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Ag(3), and four equivalent Al(2) atoms. In the second Ag site, Ag(2) is bonded in a 9-coordinate geometry to one Eu(2), two equivalent Eu(1), two equivalent Al(1), and four equivalent Al(2) atoms. In the third Ag site, Ag(3) is bonded to four equivalent Eu(2), four equivalent Ag(1), and four equivalent Al(2) atoms to form a mixture of distorted corner, edge, and face-sharing AgEu4Al4Ag4 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Ag(2) atoms to form distorted edge-sharing AlAg4 cuboctahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to two equivalent Eu(2), one Ag(3), two equivalent Ag(1), and two equivalent Ag(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2(AlAg)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.436
_cell_length_b   5.495
_cell_length_c   9.756
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   237.792
_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  0.000  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.500  1.0
  Al  Al2  1  0.500  0.000  0.000  1.0
  Al  Al3  1  0.500  0.753  0.254  1.0
  Al  Al4  1  0.500  0.247  0.746  1.0
  Al  Al5  1  0.500  0.247  0.254  1.0
  Al  Al6  1  0.500  0.753  0.746  1.0
  Ag  Ag7  1  0.000  0.500  0.321  1.0
  Ag  Ag8  1  0.000  0.000  0.833  1.0
  Ag  Ag9  1  0.000  0.000  0.167  1.0
  Ag  Ag10  1  0.000  0.500  0.679  1.0
  Ag  Ag11  1  0.500  0.500  0.500  1.0
[/CIF]
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The material structure described by Eu2(AgAl)5 crystallizes in the orthorhombic Pmmm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted hexagonal planar geometry to two equivalent Ag(1) and four equivalent Ag(2) atoms. In the second Eu site, Eu(2) is bonded in a 18-coordinate geometry to two equivalent Ag(2), four equivalent Ag(1), four equivalent Ag(3), and eight equivalent Al(2) atoms. There are three inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 9-coordinate geometry to one Eu(1), two equivalent Eu(2), two equivalent Ag(3), and four equivalent Al(2) atoms. In the second Ag site, Ag(2) is bonded in a 9-coordinate geometry to one Eu(2), two equivalent Eu(1), two equivalent Al(1), and four equivalent Al(2) atoms. In the third Ag site, Ag(3) is bonded to four equivalent Eu(2), four equivalent Ag(1), and four equivalent Al(2) atoms to form a mixture of distorted corner, edge, and face-sharing AgEu4Al4Ag4 cuboctahedra. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Ag(2) atoms to form distorted edge-sharing AlAg4 cuboctahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to two equivalent Eu(2), one Ag(3), two equivalent Ag(1), and two equivalent Ag(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu2(AlAg)5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.436
_cell_length_b   5.495
_cell_length_c   9.756
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   237.792
_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  0.000  0.500  0.000  1.0
  Eu  Eu1  1  0.000  0.000  0.500  1.0
  Al  Al2  1  0.500  0.000  0.000  1.0
  Al  Al3  1  0.500  0.753  0.254  1.0
  Al  Al4  1  0.500  0.247  0.746  1.0
  Al  Al5  1  0.500  0.247  0.254  1.0
  Al  Al6  1  0.500  0.753  0.746  1.0
  Ag  Ag7  1  0.000  0.500  0.321  1.0
  Ag  Ag8  1  0.000  0.000  0.833  1.0
  Ag  Ag9  1  0.000  0.000  0.167  1.0
  Ag  Ag10  1  0.000  0.500  0.679  1.0
  Ag  Ag11  1  0.500  0.500  0.500  1.0
[/CIF]
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