The compound described by Sr7Ag3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent Ag(1) atoms. In the second Sr site, Sr(3) is bonded in a distorted L-shaped geometry to two equivalent Ag(1) atoms. In the third Sr site, Sr(2) is bonded in a distorted T-shaped geometry to three equivalent Ag(1) atoms. Ag(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(3), and three equivalent Sr(2) atoms. is represented by the CIF card [CIF]
data_Sr7Ag3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.288
_cell_length_b   11.364
_cell_length_c   11.365
_cell_angle_alpha   120.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   815.191
_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
  Sr  Sr0  1  0.451  0.333  0.667  1.0
  Sr  Sr1  1  0.951  0.667  0.333  1.0
  Sr  Sr2  1  0.248  0.125  0.875  1.0
  Sr  Sr3  1  0.248  0.750  0.875  1.0
  Sr  Sr4  1  0.248  0.125  0.250  1.0
  Sr  Sr5  1  0.748  0.875  0.125  1.0
  Sr  Sr6  1  0.748  0.250  0.125  1.0
  Sr  Sr7  1  0.748  0.875  0.750  1.0
  Sr  Sr8  1  0.439  0.542  0.458  1.0
  Sr  Sr9  1  0.439  0.917  0.458  1.0
  Sr  Sr10  1  0.439  0.542  0.083  1.0
  Sr  Sr11  1  0.939  0.458  0.542  1.0
  Sr  Sr12  1  0.939  0.083  0.542  1.0
  Sr  Sr13  1  0.939  0.458  0.917  1.0
  Ag  Ag14  1  0.168  0.811  0.189  1.0
  Ag  Ag15  1  0.168  0.377  0.189  1.0
  Ag  Ag16  1  0.168  0.811  0.623  1.0
  Ag  Ag17  1  0.668  0.189  0.811  1.0
  Ag  Ag18  1  0.668  0.623  0.811  1.0
  Ag  Ag19  1  0.668  0.189  0.377  1.0
[/CIF]
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The compound described by Sr7Ag3 crystallizes in the hexagonal P6_3mc space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to three equivalent Ag(1) atoms. In the second Sr site, Sr(3) is bonded in a distorted L-shaped geometry to two equivalent Ag(1) atoms. In the third Sr site, Sr(2) is bonded in a distorted T-shaped geometry to three equivalent Ag(1) atoms. Ag(1) is bonded in a 6-coordinate geometry to one Sr(1), two equivalent Sr(3), and three equivalent Sr(2) atoms. is represented by the CIF card [CIF]
data_Sr7Ag3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.288
_cell_length_b   11.364
_cell_length_c   11.365
_cell_angle_alpha   120.001
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   815.191
_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
  Sr  Sr0  1  0.451  0.333  0.667  1.0
  Sr  Sr1  1  0.951  0.667  0.333  1.0
  Sr  Sr2  1  0.248  0.125  0.875  1.0
  Sr  Sr3  1  0.248  0.750  0.875  1.0
  Sr  Sr4  1  0.248  0.125  0.250  1.0
  Sr  Sr5  1  0.748  0.875  0.125  1.0
  Sr  Sr6  1  0.748  0.250  0.125  1.0
  Sr  Sr7  1  0.748  0.875  0.750  1.0
  Sr  Sr8  1  0.439  0.542  0.458  1.0
  Sr  Sr9  1  0.439  0.917  0.458  1.0
  Sr  Sr10  1  0.439  0.542  0.083  1.0
  Sr  Sr11  1  0.939  0.458  0.542  1.0
  Sr  Sr12  1  0.939  0.083  0.542  1.0
  Sr  Sr13  1  0.939  0.458  0.917  1.0
  Ag  Ag14  1  0.168  0.811  0.189  1.0
  Ag  Ag15  1  0.168  0.377  0.189  1.0
  Ag  Ag16  1  0.168  0.811  0.623  1.0
  Ag  Ag17  1  0.668  0.189  0.811  1.0
  Ag  Ag18  1  0.668  0.623  0.811  1.0
  Ag  Ag19  1  0.668  0.189  0.377  1.0
[/CIF]
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