The material structure described by MgSi2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a 10-coordinate geometry to ten equivalent Si(1) atoms. Si(1) is bonded in a distorted q6 geometry to five equivalent Mg(1) and four equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_MgSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.257
_cell_length_b   5.257
_cell_length_c   3.430
_cell_angle_alpha   72.559
_cell_angle_beta   72.559
_cell_angle_gamma   35.222
_symmetry_Int_Tables_number   1
_cell_volume   51.888
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.000  0.000  0.500  1.0
  Si  Si1  1  0.303  0.303  0.202  1.0
  Si  Si2  1  0.697  0.697  0.798  1.0
[/CIF]
.
The material structure described by MgSi2 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a 10-coordinate geometry to ten equivalent Si(1) atoms. Si(1) is bonded in a distorted q6 geometry to five equivalent Mg(1) and four equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_MgSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.257
_cell_length_b   5.257
_cell_length_c   3.430
_cell_angle_alpha   72.559
_cell_angle_beta   72.559
_cell_angle_gamma   35.222
_symmetry_Int_Tables_number   1
_cell_volume   51.888
_cell_formula_units_Z   1
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
  Mg  Mg0  1  0.000  0.000  0.500  1.0
  Si  Si1  1  0.303  0.303  0.202  1.0
  Si  Si2  1  0.697  0.697  0.798  1.0
[/CIF]
.