The compound described by Er2AlSi2 crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Al(1) is bonded in a 4-coordinate geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), two equivalent Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Er2AlSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.052
_cell_length_b   5.523
_cell_length_c   5.523
_cell_angle_alpha   61.161
_cell_angle_beta   68.479
_cell_angle_gamma   68.479
_symmetry_Int_Tables_number   1
_cell_volume   97.970
_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
  Er  Er0  1  0.789  0.711  0.711  1.0
  Er  Er1  1  0.211  0.289  0.289  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Si  Si3  1  0.500  0.289  0.711  1.0
  Si  Si4  1  0.500  0.711  0.289  1.0
[/CIF]
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The compound described by Er2AlSi2 crystallizes in the orthorhombic Immm space group. Er(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Al(1) is bonded in a 4-coordinate geometry to four equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to six equivalent Er(1), two equivalent Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Er2AlSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.052
_cell_length_b   5.523
_cell_length_c   5.523
_cell_angle_alpha   61.161
_cell_angle_beta   68.479
_cell_angle_gamma   68.479
_symmetry_Int_Tables_number   1
_cell_volume   97.970
_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
  Er  Er0  1  0.789  0.711  0.711  1.0
  Er  Er1  1  0.211  0.289  0.289  1.0
  Al  Al2  1  0.000  0.000  0.000  1.0
  Si  Si3  1  0.500  0.289  0.711  1.0
  Si  Si4  1  0.500  0.711  0.289  1.0
[/CIF]
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