The material structure described by Er2AlSi crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to three equivalent Al(1) and four equivalent Si(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to four equivalent Al(1) and three equivalent Si(1) atoms. Al(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_Er2AlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.965
_cell_length_b   5.779
_cell_length_c   7.930
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   181.698
_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
  Er  Er0  1  0.250  0.380  0.679  1.0
  Er  Er1  1  0.250  0.120  0.179  1.0
  Er  Er2  1  0.750  0.608  0.322  1.0
  Er  Er3  1  0.750  0.892  0.822  1.0
  Al  Al4  1  0.250  0.873  0.537  1.0
  Al  Al5  1  0.250  0.627  0.037  1.0
  Si  Si6  1  0.750  0.127  0.462  1.0
  Si  Si7  1  0.750  0.373  0.962  1.0
[/CIF]
.
The material structure described by Er2AlSi crystallizes in the orthorhombic Pmc2_1 space group. There are two inequivalent Er sites. In the first Er site, Er(1) is bonded in a 7-coordinate geometry to three equivalent Al(1) and four equivalent Si(1) atoms. In the second Er site, Er(2) is bonded in a 7-coordinate geometry to four equivalent Al(1) and three equivalent Si(1) atoms. Al(1) is bonded in a 9-coordinate geometry to three equivalent Er(1), four equivalent Er(2), and two equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Er(2), four equivalent Er(1), and two equivalent Al(1) atoms. is represented by the CIF card [CIF]
data_Er2AlSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.965
_cell_length_b   5.779
_cell_length_c   7.930
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   181.698
_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
  Er  Er0  1  0.250  0.380  0.679  1.0
  Er  Er1  1  0.250  0.120  0.179  1.0
  Er  Er2  1  0.750  0.608  0.322  1.0
  Er  Er3  1  0.750  0.892  0.822  1.0
  Al  Al4  1  0.250  0.873  0.537  1.0
  Al  Al5  1  0.250  0.627  0.037  1.0
  Si  Si6  1  0.750  0.127  0.462  1.0
  Si  Si7  1  0.750  0.373  0.962  1.0
[/CIF]
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