The material structure described by Ba3Ag2 crystallizes in the trigonal R-3 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in an octahedral geometry to six equivalent Ag(1) atoms. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to six equivalent Ag(1) atoms. In the third Ba site, Ba(3) is bonded in a distorted rectangular see-saw-like geometry to five equivalent Ag(1) atoms. Ag(1) is bonded in a 9-coordinate geometry to one Ba(1), two equivalent Ba(2), five equivalent Ba(3), and one Ag(1) atom. is represented by the CIF file [CIF]
data_Ba3Ag2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.906
_cell_length_b   8.906
_cell_length_c   8.906
_cell_angle_alpha   72.726
_cell_angle_beta   72.726
_cell_angle_gamma   72.726
_symmetry_Int_Tables_number   1
_cell_volume   626.964
_cell_formula_units_Z   3
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
  Ba  Ba0  1  0.500  0.500  0.500  1.0
  Ba  Ba1  1  0.294  0.294  0.294  1.0
  Ba  Ba2  1  0.706  0.706  0.706  1.0
  Ba  Ba3  1  0.335  0.831  0.115  1.0
  Ba  Ba4  1  0.115  0.335  0.831  1.0
  Ba  Ba5  1  0.831  0.115  0.335  1.0
  Ba  Ba6  1  0.665  0.169  0.885  1.0
  Ba  Ba7  1  0.885  0.665  0.169  1.0
  Ba  Ba8  1  0.169  0.885  0.665  1.0
  Ag  Ag9  1  0.632  0.464  0.089  1.0
  Ag  Ag10  1  0.089  0.632  0.464  1.0
  Ag  Ag11  1  0.464  0.089  0.632  1.0
  Ag  Ag12  1  0.368  0.536  0.911  1.0
  Ag  Ag13  1  0.911  0.368  0.536  1.0
  Ag  Ag14  1  0.536  0.911  0.368  1.0
[/CIF]
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The material structure described by Ba3Ag2 crystallizes in the trigonal R-3 space group. There are three inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in an octahedral geometry to six equivalent Ag(1) atoms. In the second Ba site, Ba(2) is bonded in a 6-coordinate geometry to six equivalent Ag(1) atoms. In the third Ba site, Ba(3) is bonded in a distorted rectangular see-saw-like geometry to five equivalent Ag(1) atoms. Ag(1) is bonded in a 9-coordinate geometry to one Ba(1), two equivalent Ba(2), five equivalent Ba(3), and one Ag(1) atom. is represented by the CIF file [CIF]
data_Ba3Ag2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.906
_cell_length_b   8.906
_cell_length_c   8.906
_cell_angle_alpha   72.726
_cell_angle_beta   72.726
_cell_angle_gamma   72.726
_symmetry_Int_Tables_number   1
_cell_volume   626.964
_cell_formula_units_Z   3
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
  Ba  Ba0  1  0.500  0.500  0.500  1.0
  Ba  Ba1  1  0.294  0.294  0.294  1.0
  Ba  Ba2  1  0.706  0.706  0.706  1.0
  Ba  Ba3  1  0.335  0.831  0.115  1.0
  Ba  Ba4  1  0.115  0.335  0.831  1.0
  Ba  Ba5  1  0.831  0.115  0.335  1.0
  Ba  Ba6  1  0.665  0.169  0.885  1.0
  Ba  Ba7  1  0.885  0.665  0.169  1.0
  Ba  Ba8  1  0.169  0.885  0.665  1.0
  Ag  Ag9  1  0.632  0.464  0.089  1.0
  Ag  Ag10  1  0.089  0.632  0.464  1.0
  Ag  Ag11  1  0.464  0.089  0.632  1.0
  Ag  Ag12  1  0.368  0.536  0.911  1.0
  Ag  Ag13  1  0.911  0.368  0.536  1.0
  Ag  Ag14  1  0.536  0.911  0.368  1.0
[/CIF]
.