The structure described by Dy2FeSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Dy sites. In the first Dy site, Dy(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 Dy site, Dy(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 Dy(2), four equivalent Dy(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 Dy(2), five equivalent Dy(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 Dy(1), five equivalent Dy(2), one Fe(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Dy2FeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.643
_cell_length_b   5.643
_cell_length_c   9.983
_cell_angle_alpha   62.943
_cell_angle_beta   62.943
_cell_angle_gamma   43.028
_symmetry_Int_Tables_number   1
_cell_volume   189.243
_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
  Dy  Dy0  1  0.999  0.999  0.329  1.0
  Dy  Dy1  1  0.001  0.001  0.671  1.0
  Dy  Dy2  1  0.812  0.812  0.109  1.0
  Dy  Dy3  1  0.188  0.188  0.891  1.0
  Fe  Fe4  1  0.728  0.728  0.623  1.0
  Fe  Fe5  1  0.272  0.272  0.377  1.0
  Si  Si6  1  0.655  0.655  0.436  1.0
  Si  Si7  1  0.345  0.345  0.564  1.0
  Si  Si8  1  0.501  0.501  0.126  1.0
  Si  Si9  1  0.499  0.499  0.874  1.0
[/CIF]
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The structure described by Dy2FeSi2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Dy sites. In the first Dy site, Dy(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 Dy site, Dy(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 Dy(2), four equivalent Dy(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 Dy(2), five equivalent Dy(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 Dy(1), five equivalent Dy(2), one Fe(1), and one Si(2) atom. is represented by the CIF file [CIF]
data_Dy2FeSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.643
_cell_length_b   5.643
_cell_length_c   9.983
_cell_angle_alpha   62.943
_cell_angle_beta   62.943
_cell_angle_gamma   43.028
_symmetry_Int_Tables_number   1
_cell_volume   189.243
_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
  Dy  Dy0  1  0.999  0.999  0.329  1.0
  Dy  Dy1  1  0.001  0.001  0.671  1.0
  Dy  Dy2  1  0.812  0.812  0.109  1.0
  Dy  Dy3  1  0.188  0.188  0.891  1.0
  Fe  Fe4  1  0.728  0.728  0.623  1.0
  Fe  Fe5  1  0.272  0.272  0.377  1.0
  Si  Si6  1  0.655  0.655  0.436  1.0
  Si  Si7  1  0.345  0.345  0.564  1.0
  Si  Si8  1  0.501  0.501  0.126  1.0
  Si  Si9  1  0.499  0.499  0.874  1.0
[/CIF]
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