data_Si2AgBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.85
_cell_length_b   5.14
_cell_length_c   4.31
_cell_angle_alpha   90.0
_cell_angle_beta   101.95
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2AgBr
_chemical_formula_sum   'Si2 Ag1 Br1'
_cell_volume   83.56
_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
  Si  Si2  1  0.57  0.57  0.84  1.0
  Si  Si3  1  0.39  0.57  0.38  1.0
  Ag  Ag0  1  0.48  0.0  0.11  1.0
  Br  Br1  1  0.0  0.0  0.0  1.0

data_Si2AgBr
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.85
_cell_length_b   4.31
_cell_length_c   5.14
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   101.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2AgBr
_chemical_formula_sum   'Si2 Ag1 Br1'
_cell_volume   83.56
_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
  Si  Si0  1  0.43  0.16  0.43  1.0
  Si  Si1  1  0.61  0.62  0.43  1.0
  Ag  Ag2  1  0.52  0.89  0.0  1.0
  Br  Br3  1  0.0  0.0  0.0  1.0

Si Si Ag Br
AgSi2Br crystallizes in the triclinic P1 space group. Ag(1) is bonded in a distorted bent 150 degrees geometry to one Si(1), two equivalent Si(2), and two equivalent Br(1) atoms. The Ag(1)-Si(1) bond length is 2.54 Å. There is one shorter (2.54 Å) and one longer (3.21 Å) Ag(1)-Si(2) bond length. There is one shorter (1.80 Å) and one longer (2.16 Å) Ag(1)-Br(1) bond length. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to one Ag(1), two equivalent Si(2), and one Br(1) atom. There is one shorter (1.99 Å) and one longer (2.55 Å) Si(1)-Si(2) bond length. The Si(1)-Br(1) bond length is 2.75 Å. In the second Si site, Si(2) is bonded in a 5-coordinate geometry to two equivalent Ag(1), two equivalent Si(1), and one Br(1) atom. The Si(2)-Br(1) bond length is 2.95 Å. Br(1) is bonded in a 2-coordinate geometry to two equivalent Ag(1), one Si(1), and one Si(2) atom.