The structure described by ErNiSi2 crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Si(1), and six equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_ErSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.426
_cell_length_b   8.426
_cell_length_c   3.906
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   152.961
_symmetry_Int_Tables_number   1
_cell_volume   126.061
_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  0.106  0.894  0.250  1.0
  Er  Er1  1  0.894  0.106  0.750  1.0
  Si  Si2  1  0.750  0.250  0.250  1.0
  Si  Si3  1  0.250  0.750  0.750  1.0
  Si  Si4  1  0.540  0.460  0.750  1.0
  Si  Si5  1  0.460  0.540  0.250  1.0
  Ni  Ni6  1  0.677  0.323  0.750  1.0
  Ni  Ni7  1  0.323  0.677  0.250  1.0
[/CIF]
.
The structure described by ErNiSi2 crystallizes in the orthorhombic Cmcm space group. Er(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), four equivalent Si(1), and six equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(2), and four equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to four equivalent Er(1) and four equivalent Ni(1) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent Er(1), one Ni(1), and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_ErSi2Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.426
_cell_length_b   8.426
_cell_length_c   3.906
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   152.961
_symmetry_Int_Tables_number   1
_cell_volume   126.061
_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  0.106  0.894  0.250  1.0
  Er  Er1  1  0.894  0.106  0.750  1.0
  Si  Si2  1  0.750  0.250  0.250  1.0
  Si  Si3  1  0.250  0.750  0.750  1.0
  Si  Si4  1  0.540  0.460  0.750  1.0
  Si  Si5  1  0.460  0.540  0.250  1.0
  Ni  Ni6  1  0.677  0.323  0.750  1.0
  Ni  Ni7  1  0.323  0.677  0.250  1.0
[/CIF]
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