data_Ag2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.67
_cell_length_b   10.67
_cell_length_c   10.67
_cell_angle_alpha   164.14
_cell_angle_beta   158.72
_cell_angle_gamma   26.66
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ag2As
_chemical_formula_sum   'Ag4 As2'
_cell_volume   120.52
_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
  Ag  Ag0  1  0.0  0.96  1.0  1.0
  Ag  Ag1  1  0.47  0.01  0.39  1.0
  Ag  Ag2  1  0.0  0.96  0.98  1.0
  Ag  Ag3  1  0.47  0.01  0.4  1.0
  As  As4  1  0.47  0.99  0.47  1.0
  As  As5  1  0.0  0.99  0.91  1.0

data_Ag2As
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.95
_cell_length_b   3.94
_cell_length_c   10.67
_cell_angle_alpha   100.64
_cell_angle_beta   97.93
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Ag2As
_chemical_formula_sum   'Ag4 As2'
_cell_volume   120.52
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Ag  Ag0  2  0.02  0.32  0.05  1.0
  Ag  Ag1  2  0.04  0.34  0.07  1.0
  As  As2  2  0.04  0.78  0.04  1.0

Ag Ag Ag Ag As As
Ag2As is Cyanogen Chloride-derived structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two Ag2As clusters. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a single-bond geometry to one Ag(2) atom. The Ag(1)-Ag(2) bond length is 0.18 Å. In the second Ag site, Ag(2) is bonded in a linear geometry to one Ag(1) and one As(1) atom. The Ag(2)-As(1) bond length is 1.03 Å. As(1) is bonded in a single-bond geometry to one Ag(2) atom.