The crystal structure described by SrSi2 crystallizes in the cubic P4_132 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the second Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the third Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the fourth Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. In the second Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. In the third Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. is represented by the CIF file [CIF]
data_SrSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.564
_cell_length_b   6.564
_cell_length_c   6.564
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   282.810
_cell_formula_units_Z   4
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
  Sr  Sr0  1  0.875  0.125  0.625  1.0
  Sr  Sr1  1  0.125  0.625  0.875  1.0
  Sr  Sr2  1  0.625  0.875  0.125  1.0
  Sr  Sr3  1  0.375  0.375  0.375  1.0
  Si  Si4  1  0.672  0.672  0.672  1.0
  Si  Si5  1  0.922  0.578  0.422  1.0
  Si  Si6  1  0.578  0.422  0.922  1.0
  Si  Si7  1  0.422  0.922  0.578  1.0
  Si  Si8  1  0.078  0.078  0.078  1.0
  Si  Si9  1  0.328  0.172  0.828  1.0
  Si  Si10  1  0.828  0.328  0.172  1.0
  Si  Si11  1  0.172  0.828  0.328  1.0
[/CIF]
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The crystal structure described by SrSi2 crystallizes in the cubic P4_132 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the second Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the third Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. In the fourth Sr site, Sr(1) is bonded in a distorted body-centered cubic geometry to eight Si(1,1,1) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. In the second Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. In the third Si site, Si(1) is bonded in a 7-coordinate geometry to four Sr(1,1,1,1) and three Si(1,1) atoms. is represented by the CIF file [CIF]
data_SrSi2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.564
_cell_length_b   6.564
_cell_length_c   6.564
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   282.810
_cell_formula_units_Z   4
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
  Sr  Sr0  1  0.875  0.125  0.625  1.0
  Sr  Sr1  1  0.125  0.625  0.875  1.0
  Sr  Sr2  1  0.625  0.875  0.125  1.0
  Sr  Sr3  1  0.375  0.375  0.375  1.0
  Si  Si4  1  0.672  0.672  0.672  1.0
  Si  Si5  1  0.922  0.578  0.422  1.0
  Si  Si6  1  0.578  0.422  0.922  1.0
  Si  Si7  1  0.422  0.922  0.578  1.0
  Si  Si8  1  0.078  0.078  0.078  1.0
  Si  Si9  1  0.328  0.172  0.828  1.0
  Si  Si10  1  0.828  0.328  0.172  1.0
  Si  Si11  1  0.172  0.828  0.328  1.0
[/CIF]
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