The material structure described by Eu3AlO5 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted q6 geometry to two equivalent O(1) and eight equivalent O(2) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. Al(1) is bonded in a tetrahedral geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Eu(1) and four equivalent Eu(2) atoms to form corner-sharing OEu6 octahedra. The corner-sharing octahedral tilt angles range from 0-32°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Eu(1), three equivalent Eu(2), and one Al(1) atom. is represented by the CIF file [CIF]
data_Eu3AlO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.311
_cell_length_b   7.311
_cell_length_c   7.311
_cell_angle_alpha   125.410
_cell_angle_beta   125.410
_cell_angle_gamma   80.860
_symmetry_Int_Tables_number   1
_cell_volume   250.242
_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
  Eu  Eu0  1  0.750  0.750  0.000  1.0
  Eu  Eu1  1  0.250  0.250  0.000  1.0
  Eu  Eu2  1  0.178  0.678  0.856  1.0
  Eu  Eu3  1  0.822  0.322  0.144  1.0
  Eu  Eu4  1  0.678  0.822  0.500  1.0
  Eu  Eu5  1  0.322  0.178  0.500  1.0
  Al  Al6  1  0.750  0.250  0.500  1.0
  Al  Al7  1  0.250  0.750  0.500  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.500  0.500  0.000  1.0
  O  O10  1  0.793  0.293  0.787  1.0
  O  O11  1  0.505  0.005  0.213  1.0
  O  O12  1  0.293  0.505  0.500  1.0
  O  O13  1  0.005  0.793  0.500  1.0
  O  O14  1  0.207  0.707  0.213  1.0
  O  O15  1  0.495  0.995  0.787  1.0
  O  O16  1  0.707  0.495  0.500  1.0
  O  O17  1  0.995  0.207  0.500  1.0
[/CIF]
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The material structure described by Eu3AlO5 crystallizes in the tetragonal I4/mcm space group. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted q6 geometry to two equivalent O(1) and eight equivalent O(2) atoms. In the second Eu site, Eu(2) is bonded in a 8-coordinate geometry to two equivalent O(1) and six equivalent O(2) atoms. Al(1) is bonded in a tetrahedral geometry to four equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Eu(1) and four equivalent Eu(2) atoms to form corner-sharing OEu6 octahedra. The corner-sharing octahedral tilt angles range from 0-32°. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent Eu(1), three equivalent Eu(2), and one Al(1) atom. is represented by the CIF file [CIF]
data_Eu3AlO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.311
_cell_length_b   7.311
_cell_length_c   7.311
_cell_angle_alpha   125.410
_cell_angle_beta   125.410
_cell_angle_gamma   80.860
_symmetry_Int_Tables_number   1
_cell_volume   250.242
_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
  Eu  Eu0  1  0.750  0.750  0.000  1.0
  Eu  Eu1  1  0.250  0.250  0.000  1.0
  Eu  Eu2  1  0.178  0.678  0.856  1.0
  Eu  Eu3  1  0.822  0.322  0.144  1.0
  Eu  Eu4  1  0.678  0.822  0.500  1.0
  Eu  Eu5  1  0.322  0.178  0.500  1.0
  Al  Al6  1  0.750  0.250  0.500  1.0
  Al  Al7  1  0.250  0.750  0.500  1.0
  O  O8  1  0.000  0.000  0.000  1.0
  O  O9  1  0.500  0.500  0.000  1.0
  O  O10  1  0.793  0.293  0.787  1.0
  O  O11  1  0.505  0.005  0.213  1.0
  O  O12  1  0.293  0.505  0.500  1.0
  O  O13  1  0.005  0.793  0.500  1.0
  O  O14  1  0.207  0.707  0.213  1.0
  O  O15  1  0.495  0.995  0.787  1.0
  O  O16  1  0.707  0.495  0.500  1.0
  O  O17  1  0.995  0.207  0.500  1.0
[/CIF]
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