The material structure described by MgY2Si2 crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. Y(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), six equivalent Y(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Y2MgSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.187
_cell_length_b   7.187
_cell_length_c   4.211
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   217.543
_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
  Y  Y0  1  0.679  0.179  0.500  1.0
  Y  Y1  1  0.321  0.821  0.500  1.0
  Y  Y2  1  0.179  0.321  0.500  1.0
  Y  Y3  1  0.821  0.679  0.500  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
  Mg  Mg5  1  0.500  0.500  0.000  1.0
  Si  Si6  1  0.117  0.617  0.000  1.0
  Si  Si7  1  0.883  0.383  0.000  1.0
  Si  Si8  1  0.617  0.883  0.000  1.0
  Si  Si9  1  0.383  0.117  0.000  1.0
[/CIF]
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The material structure described by MgY2Si2 crystallizes in the tetragonal P4/mbm space group. Mg(1) is bonded in a square co-planar geometry to four equivalent Si(1) atoms. Y(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), six equivalent Y(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Y2MgSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.187
_cell_length_b   7.187
_cell_length_c   4.211
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   217.543
_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
  Y  Y0  1  0.679  0.179  0.500  1.0
  Y  Y1  1  0.321  0.821  0.500  1.0
  Y  Y2  1  0.179  0.321  0.500  1.0
  Y  Y3  1  0.821  0.679  0.500  1.0
  Mg  Mg4  1  0.000  0.000  0.000  1.0
  Mg  Mg5  1  0.500  0.500  0.000  1.0
  Si  Si6  1  0.117  0.617  0.000  1.0
  Si  Si7  1  0.883  0.383  0.000  1.0
  Si  Si8  1  0.617  0.883  0.000  1.0
  Si  Si9  1  0.383  0.117  0.000  1.0
[/CIF]
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