The crystal structure described by Sr4GaSi3 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Ga(1), two equivalent Si(1), and four equivalent Si(2) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to two equivalent Ga(1), one Si(1), and four equivalent Si(3) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to four equivalent Ga(1), one Si(2), and two equivalent Si(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one Si(3), two equivalent Si(2), and four equivalent Si(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), four equivalent Sr(3), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to one Sr(2), two equivalent Sr(1), four equivalent Sr(4), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Sr(3), two equivalent Sr(4), four equivalent Sr(1), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Sr(4), two equivalent Sr(3), four equivalent Sr(2), and two equivalent Ga(1) atoms. is represented by the CIF card [CIF]
data_Sr4GaSi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.148
_cell_length_b   4.788
_cell_length_c   11.507
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   228.530
_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
  Sr  Sr0  1  0.000  0.000  0.365  1.0
  Sr  Sr1  1  0.000  0.500  0.859  1.0
  Sr  Sr2  1  0.500  0.500  0.140  1.0
  Sr  Sr3  1  0.500  0.000  0.638  1.0
  Ga  Ga4  1  0.000  0.000  0.063  1.0
  Si  Si5  1  0.000  0.500  0.562  1.0
  Si  Si6  1  0.500  0.500  0.440  1.0
  Si  Si7  1  0.500  0.000  0.934  1.0
[/CIF]
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The crystal structure described by Sr4GaSi3 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Ga(1), two equivalent Si(1), and four equivalent Si(2) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to two equivalent Ga(1), one Si(1), and four equivalent Si(3) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to four equivalent Ga(1), one Si(2), and two equivalent Si(3) atoms. In the fourth Sr site, Sr(4) is bonded in a 7-coordinate geometry to one Si(3), two equivalent Si(2), and four equivalent Si(1) atoms. Ga(1) is bonded in a 9-coordinate geometry to one Sr(1), two equivalent Sr(2), four equivalent Sr(3), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to one Sr(2), two equivalent Sr(1), four equivalent Sr(4), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to one Sr(3), two equivalent Sr(4), four equivalent Sr(1), and two equivalent Si(1) atoms. In the third Si site, Si(3) is bonded in a 9-coordinate geometry to one Sr(4), two equivalent Sr(3), four equivalent Sr(2), and two equivalent Ga(1) atoms. is represented by the CIF card [CIF]
data_Sr4GaSi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.148
_cell_length_b   4.788
_cell_length_c   11.507
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   228.530
_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
  Sr  Sr0  1  0.000  0.000  0.365  1.0
  Sr  Sr1  1  0.000  0.500  0.859  1.0
  Sr  Sr2  1  0.500  0.500  0.140  1.0
  Sr  Sr3  1  0.500  0.000  0.638  1.0
  Ga  Ga4  1  0.000  0.000  0.063  1.0
  Si  Si5  1  0.000  0.500  0.562  1.0
  Si  Si6  1  0.500  0.500  0.440  1.0
  Si  Si7  1  0.500  0.000  0.934  1.0
[/CIF]
.