The structure described by Ga2Se3 crystallizes in the orthorhombic Imm2 space group. Ga(1) is bonded to one Se(2) and three equivalent Se(1) atoms to form corner-sharing GaSe4 tetrahedra. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to three equivalent Ga(1) atoms. In the second Se site, Se(2) is bonded in a water-like geometry to two equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ga2Se3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.757
_cell_length_b   6.757
_cell_length_c   6.757
_cell_angle_alpha   146.830
_cell_angle_beta   130.821
_cell_angle_gamma   60.610
_symmetry_Int_Tables_number   1
_cell_volume   126.546
_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  0.331  0.340  0.991  1.0
  Ga  Ga1  1  0.651  0.660  0.991  1.0
  Se  Se2  1  0.602  0.839  0.764  1.0
  Se  Se3  1  0.925  0.161  0.764  1.0
  Se  Se4  1  0.241  0.500  0.741  1.0
[/CIF]
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The structure described by Ga2Se3 crystallizes in the orthorhombic Imm2 space group. Ga(1) is bonded to one Se(2) and three equivalent Se(1) atoms to form corner-sharing GaSe4 tetrahedra. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to three equivalent Ga(1) atoms. In the second Se site, Se(2) is bonded in a water-like geometry to two equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ga2Se3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.757
_cell_length_b   6.757
_cell_length_c   6.757
_cell_angle_alpha   146.830
_cell_angle_beta   130.821
_cell_angle_gamma   60.610
_symmetry_Int_Tables_number   1
_cell_volume   126.546
_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  0.331  0.340  0.991  1.0
  Ga  Ga1  1  0.651  0.660  0.991  1.0
  Se  Se2  1  0.602  0.839  0.764  1.0
  Se  Se3  1  0.925  0.161  0.764  1.0
  Se  Se4  1  0.241  0.500  0.741  1.0
[/CIF]
.