The material structure described by Eu(ZnAl)2 crystallizes in the tetragonal I4/mmm space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Al(1) atoms. Zn(1) is bonded in a 9-coordinate geometry to four equivalent Eu(1), one Zn(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Eu(1) and four equivalent Zn(1) atoms to form a mixture of distorted face, corner, and edge-sharing AlEu4Zn4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu(AlZn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.194
_cell_length_b   4.194
_cell_length_c   6.289
_cell_angle_alpha   70.564
_cell_angle_beta   70.564
_cell_angle_gamma   90.054
_symmetry_Int_Tables_number   1
_cell_volume   97.595
_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  1.000  0.000  0.000  1.0
  Al  Al1  1  0.750  0.250  0.500  1.0
  Al  Al2  1  0.250  0.750  0.500  1.0
  Zn  Zn3  1  0.388  0.388  0.224  1.0
  Zn  Zn4  1  0.612  0.612  0.776  1.0
[/CIF]
.
The material structure described by Eu(ZnAl)2 crystallizes in the tetragonal I4/mmm space group. Eu(1) is bonded in a 16-coordinate geometry to eight equivalent Zn(1) and eight equivalent Al(1) atoms. Zn(1) is bonded in a 9-coordinate geometry to four equivalent Eu(1), one Zn(1), and four equivalent Al(1) atoms. Al(1) is bonded to four equivalent Eu(1) and four equivalent Zn(1) atoms to form a mixture of distorted face, corner, and edge-sharing AlEu4Zn4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Eu(AlZn)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.194
_cell_length_b   4.194
_cell_length_c   6.289
_cell_angle_alpha   70.564
_cell_angle_beta   70.564
_cell_angle_gamma   90.054
_symmetry_Int_Tables_number   1
_cell_volume   97.595
_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  1.000  0.000  0.000  1.0
  Al  Al1  1  0.750  0.250  0.500  1.0
  Al  Al2  1  0.250  0.750  0.500  1.0
  Zn  Zn3  1  0.388  0.388  0.224  1.0
  Zn  Zn4  1  0.612  0.612  0.776  1.0
[/CIF]
.