The compound described by ErNiSi3 crystallizes in the orthorhombic Cmmm space group. Er(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), two equivalent Si(3), and six equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Ni(1), one Si(1), and four equivalent Si(3) 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. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Ni(1), one Si(3), and four equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_ErSi3Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.893
_cell_length_b   3.923
_cell_length_c   10.608
_cell_angle_alpha   90.000
_cell_angle_beta   100.572
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   159.218
_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  0.331  0.500  0.663  1.0
  Er  Er1  1  0.669  0.500  0.337  1.0
  Si  Si2  1  0.444  0.000  0.887  1.0
  Si  Si3  1  0.556  0.000  0.113  1.0
  Si  Si4  1  0.218  0.000  0.435  1.0
  Si  Si5  1  0.782  0.000  0.565  1.0
  Si  Si6  1  0.944  0.500  0.887  1.0
  Si  Si7  1  0.056  0.500  0.113  1.0
  Ni  Ni8  1  0.111  0.000  0.221  1.0
  Ni  Ni9  1  0.889  0.000  0.779  1.0
[/CIF]
.
The compound described by ErNiSi3 crystallizes in the orthorhombic Cmmm space group. Er(1) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), two equivalent Si(3), and six equivalent Si(2) atoms. Ni(1) is bonded in a 9-coordinate geometry to four equivalent Er(1), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Ni(1), one Si(1), and four equivalent Si(3) 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. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Ni(1), one Si(3), and four equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_ErSi3Ni
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.893
_cell_length_b   3.923
_cell_length_c   10.608
_cell_angle_alpha   90.000
_cell_angle_beta   100.572
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   159.218
_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  0.331  0.500  0.663  1.0
  Er  Er1  1  0.669  0.500  0.337  1.0
  Si  Si2  1  0.444  0.000  0.887  1.0
  Si  Si3  1  0.556  0.000  0.113  1.0
  Si  Si4  1  0.218  0.000  0.435  1.0
  Si  Si5  1  0.782  0.000  0.565  1.0
  Si  Si6  1  0.944  0.500  0.887  1.0
  Si  Si7  1  0.056  0.500  0.113  1.0
  Ni  Ni8  1  0.111  0.000  0.221  1.0
  Ni  Ni9  1  0.889  0.000  0.779  1.0
[/CIF]
.