The compound described by Ho2FeSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Si(2), and five equivalent Si(1) atoms. In the second Ho site, Ho(2) is bonded in a 6-coordinate geometry to two equivalent Fe(1), one Si(1), and five equivalent Si(2) atoms. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), one Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Ho(2), five equivalent Ho(1), three equivalent Fe(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), five equivalent Ho(2), one Fe(1), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2FeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.593
_cell_length_b   5.593
_cell_length_c   9.887
_cell_angle_alpha   62.791
_cell_angle_beta   62.791
_cell_angle_gamma   43.162
_symmetry_Int_Tables_number   1
_cell_volume   184.264
_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
  Ho  Ho0  1  0.999  0.999  0.329  1.0
  Ho  Ho1  1  0.001  0.001  0.671  1.0
  Ho  Ho2  1  0.812  0.812  0.109  1.0
  Ho  Ho3  1  0.188  0.188  0.891  1.0
  Fe  Fe4  1  0.729  0.729  0.623  1.0
  Fe  Fe5  1  0.271  0.271  0.377  1.0
  Si  Si6  1  0.656  0.656  0.436  1.0
  Si  Si7  1  0.344  0.344  0.564  1.0
  Si  Si8  1  0.500  0.500  0.127  1.0
  Si  Si9  1  0.500  0.500  0.873  1.0
[/CIF]
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The compound described by Ho2FeSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Si(2), and five equivalent Si(1) atoms. In the second Ho site, Ho(2) is bonded in a 6-coordinate geometry to two equivalent Fe(1), one Si(1), and five equivalent Si(2) atoms. Fe(1) is bonded in a 10-coordinate geometry to two equivalent Ho(2), four equivalent Ho(1), one Si(2), and three equivalent Si(1) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 10-coordinate geometry to one Ho(2), five equivalent Ho(1), three equivalent Fe(1), and one Si(1) atom. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), five equivalent Ho(2), one Fe(1), and one Si(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2FeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.593
_cell_length_b   5.593
_cell_length_c   9.887
_cell_angle_alpha   62.791
_cell_angle_beta   62.791
_cell_angle_gamma   43.162
_symmetry_Int_Tables_number   1
_cell_volume   184.264
_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
  Ho  Ho0  1  0.999  0.999  0.329  1.0
  Ho  Ho1  1  0.001  0.001  0.671  1.0
  Ho  Ho2  1  0.812  0.812  0.109  1.0
  Ho  Ho3  1  0.188  0.188  0.891  1.0
  Fe  Fe4  1  0.729  0.729  0.623  1.0
  Fe  Fe5  1  0.271  0.271  0.377  1.0
  Si  Si6  1  0.656  0.656  0.436  1.0
  Si  Si7  1  0.344  0.344  0.564  1.0
  Si  Si8  1  0.500  0.500  0.127  1.0
  Si  Si9  1  0.500  0.500  0.873  1.0
[/CIF]
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