The structure described by GaAs crystallizes in the orthorhombic Imm2 space group. Ga(1) is bonded in a 4-coordinate geometry to four equivalent As(1) atoms. As(1) is bonded in a 4-coordinate geometry to four equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_GaAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.926
_cell_length_b   3.926
_cell_length_c   3.926
_cell_angle_alpha   136.544
_cell_angle_beta   98.057
_cell_angle_gamma   97.698
_symmetry_Int_Tables_number   1
_cell_volume   38.670
_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
  Ga  Ga0  1  0.500  0.649  0.149  1.0
  As  As1  1  0.000  0.905  0.905  1.0
[/CIF]
.
The structure described by GaAs crystallizes in the orthorhombic Imm2 space group. Ga(1) is bonded in a 4-coordinate geometry to four equivalent As(1) atoms. As(1) is bonded in a 4-coordinate geometry to four equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_GaAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.926
_cell_length_b   3.926
_cell_length_c   3.926
_cell_angle_alpha   136.544
_cell_angle_beta   98.057
_cell_angle_gamma   97.698
_symmetry_Int_Tables_number   1
_cell_volume   38.670
_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
  Ga  Ga0  1  0.500  0.649  0.149  1.0
  As  As1  1  0.000  0.905  0.905  1.0
[/CIF]
.