data_GaCoSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.1
_cell_length_b   6.1
_cell_length_c   6.1
_cell_angle_alpha   151.94
_cell_angle_beta   151.94
_cell_angle_gamma   40.11
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaCoSe
_chemical_formula_sum   'Ga1 Co1 Se1'
_cell_volume   50.16
_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  Ga1  1  0.0  0.0  0.15  1.0
  Co  Co0  1  0.0  0.0  0.18  1.0
  Se  Se2  1  0.0  0.0  0.13  1.0

data_GaCoSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.18
_cell_length_b   4.18
_cell_length_c   6.1
_cell_angle_alpha   90.0
_cell_angle_beta   110.05
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   GaCoSe
_chemical_formula_sum   'Ga2 Co2 Se2'
_cell_volume   100.31
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.85  1.0
  Co  Co1  2  0.0  0.0  0.82  1.0
  Se  Se2  2  0.0  0.0  0.87  1.0

Ga Co Se
CoGaSe is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CoGaSe clusters. Co(1) is bonded in a single-bond geometry to one Ga(1) atom. The Co(1)-Ga(1) bond length is 0.16 Å. Ga(1) is bonded in a linear geometry to one Co(1) and one Se(1) atom. The Ga(1)-Se(1) bond length is 0.14 Å. Se(1) is bonded in a single-bond geometry to one Ga(1) atom.