The structure described by Er3CoGaS7 crystallizes in the hexagonal P6_3 space group. Er(1) is bonded in a 7-coordinate geometry to one S(2), three equivalent S(1), and three equivalent S(3) atoms. Co(1) is bonded to six equivalent S(3) atoms to form face-sharing CoS6 octahedra. Ga(1) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(1) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to three equivalent Er(1) and one Ga(1) atom. In the second S site, S(2) is bonded to three equivalent Er(1) and one Ga(1) atom to form corner-sharing SEr3Ga tetrahedra. In the third S site, S(3) is bonded to three equivalent Er(1) and two equivalent Co(1) atoms to form SEr3Co2 square pyramids that share corners with two equivalent S(3)Er3Co2 square pyramids, corners with three equivalent S(2)Er3Ga tetrahedra, edges with four equivalent S(3)Er3Co2 square pyramids, and faces with two equivalent S(3)Er3Co2 square pyramids. is represented by the CIF file [CIF]
data_Er3GaCoS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.478
_cell_length_b   9.478
_cell_length_c   6.121
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   476.259
_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
  Er  Er0  1  0.845  0.627  0.178  1.0
  Er  Er1  1  0.782  0.155  0.178  1.0
  Er  Er2  1  0.373  0.218  0.178  1.0
  Er  Er3  1  0.155  0.373  0.678  1.0
  Er  Er4  1  0.218  0.845  0.678  1.0
  Er  Er5  1  0.627  0.782  0.678  1.0
  Ga  Ga6  1  0.333  0.667  0.106  1.0
  Ga  Ga7  1  0.667  0.333  0.606  1.0
  Co  Co8  1  0.000  0.000  0.511  1.0
  Co  Co9  1  0.000  0.000  0.011  1.0
  S  S10  1  0.566  0.482  0.445  1.0
  S  S11  1  0.916  0.434  0.445  1.0
  S  S12  1  0.518  0.084  0.445  1.0
  S  S13  1  0.434  0.518  0.945  1.0
  S  S14  1  0.084  0.566  0.945  1.0
  S  S15  1  0.482  0.916  0.945  1.0
  S  S16  1  0.333  0.667  0.474  1.0
  S  S17  1  0.667  0.333  0.974  1.0
  S  S18  1  0.128  0.903  0.268  1.0
  S  S19  1  0.774  0.872  0.268  1.0
  S  S20  1  0.097  0.226  0.268  1.0
  S  S21  1  0.872  0.097  0.768  1.0
  S  S22  1  0.226  0.128  0.768  1.0
  S  S23  1  0.903  0.774  0.768  1.0
[/CIF]
.
The structure described by Er3CoGaS7 crystallizes in the hexagonal P6_3 space group. Er(1) is bonded in a 7-coordinate geometry to one S(2), three equivalent S(1), and three equivalent S(3) atoms. Co(1) is bonded to six equivalent S(3) atoms to form face-sharing CoS6 octahedra. Ga(1) is bonded in a tetrahedral geometry to one S(2) and three equivalent S(1) atoms. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to three equivalent Er(1) and one Ga(1) atom. In the second S site, S(2) is bonded to three equivalent Er(1) and one Ga(1) atom to form corner-sharing SEr3Ga tetrahedra. In the third S site, S(3) is bonded to three equivalent Er(1) and two equivalent Co(1) atoms to form SEr3Co2 square pyramids that share corners with two equivalent S(3)Er3Co2 square pyramids, corners with three equivalent S(2)Er3Ga tetrahedra, edges with four equivalent S(3)Er3Co2 square pyramids, and faces with two equivalent S(3)Er3Co2 square pyramids. is represented by the CIF file [CIF]
data_Er3GaCoS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.478
_cell_length_b   9.478
_cell_length_c   6.121
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   476.259
_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
  Er  Er0  1  0.845  0.627  0.178  1.0
  Er  Er1  1  0.782  0.155  0.178  1.0
  Er  Er2  1  0.373  0.218  0.178  1.0
  Er  Er3  1  0.155  0.373  0.678  1.0
  Er  Er4  1  0.218  0.845  0.678  1.0
  Er  Er5  1  0.627  0.782  0.678  1.0
  Ga  Ga6  1  0.333  0.667  0.106  1.0
  Ga  Ga7  1  0.667  0.333  0.606  1.0
  Co  Co8  1  0.000  0.000  0.511  1.0
  Co  Co9  1  0.000  0.000  0.011  1.0
  S  S10  1  0.566  0.482  0.445  1.0
  S  S11  1  0.916  0.434  0.445  1.0
  S  S12  1  0.518  0.084  0.445  1.0
  S  S13  1  0.434  0.518  0.945  1.0
  S  S14  1  0.084  0.566  0.945  1.0
  S  S15  1  0.482  0.916  0.945  1.0
  S  S16  1  0.333  0.667  0.474  1.0
  S  S17  1  0.667  0.333  0.974  1.0
  S  S18  1  0.128  0.903  0.268  1.0
  S  S19  1  0.774  0.872  0.268  1.0
  S  S20  1  0.097  0.226  0.268  1.0
  S  S21  1  0.872  0.097  0.768  1.0
  S  S22  1  0.226  0.128  0.768  1.0
  S  S23  1  0.903  0.774  0.768  1.0
[/CIF]
.