data_GeAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.65
_cell_length_b   5.65
_cell_length_c   5.65
_cell_angle_alpha   150.53
_cell_angle_beta   132.1
_cell_angle_gamma   57.25
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GeAs2
_chemical_formula_sum   'Ge1 As2'
_cell_volume   65.52
_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
  Ge  Ge2  1  0.0  0.0  0.0  1.0
  As  As0  1  0.0  0.0  0.71  1.0
  As  As1  1  0.0  0.0  0.21  1.0

data_GeAs2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.88
_cell_length_b   4.59
_cell_length_c   5.65
_cell_angle_alpha   113.95
_cell_angle_beta   104.74
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GeAs2
_chemical_formula_sum   'Ge1 As2'
_cell_volume   65.52
_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
  Ge  Ge0  1  0.0  0.0  0.0  1.0
  As  As1  1  0.29  0.29  0.29  1.0
  As  As2  1  0.79  0.79  0.79  1.0

Ge As As
GeAs2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one GeAs2 cluster. Ge(1) is bonded in a linear geometry to one As(1) and one As(2) atom. The Ge(1)-As(1) bond length is 1.61 Å. The Ge(1)-As(2) bond length is 1.19 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a single-bond geometry to one Ge(1) atom. In the second As site, As(2) is bonded in a single-bond geometry to one Ge(1) atom.