The structure described by Dy3GaS6 crystallizes in the orthorhombic Cmc2_1 space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one S(3), two equivalent S(1), two equivalent S(2), and two equivalent S(4) atoms to form distorted DyS7 pentagonal bipyramids that share corners with four equivalent Dy(1)S7 pentagonal bipyramids, corners with three equivalent Ga(1)S4 tetrahedra, edges with two equivalent Dy(1)S7 pentagonal bipyramids,  an edgeedge with one Ga(1)S4 tetrahedra, and  a faceface with one Dy(1)S7 pentagonal bipyramid. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to one S(3), two equivalent S(1), and four equivalent S(2) atoms. Ga(1) is bonded to one S(3), one S(4), and two equivalent S(1) atoms to form GaS4 tetrahedra that share corners with six equivalent Dy(1)S7 pentagonal bipyramids and edges with two equivalent Dy(1)S7 pentagonal bipyramids. There are four inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Dy(2), two equivalent Dy(1), and one Ga(1) atom. In the second S site, S(2) is bonded to two equivalent Dy(1) and two equivalent Dy(2) atoms to form SDy4 tetrahedra that share corners with two equivalent S(2)Dy4 tetrahedra, corners with four equivalent S(3)Dy3Ga tetrahedra, corners with two equivalent S(4)Dy4Ga trigonal bipyramids, edges with three equivalent S(2)Dy4 tetrahedra, and  an edgeedge with one S(4)Dy4Ga trigonal bipyramid. In the third S site, S(3) is bonded to one Dy(2), two equivalent Dy(1), and one Ga(1) atom to form distorted SDy3Ga tetrahedra that share corners with eight equivalent S(2)Dy4 tetrahedra,  a cornercorner with one S(4)Dy4Ga trigonal bipyramid, and edges with two equivalent S(4)Dy4Ga trigonal bipyramids. In the fourth S site, S(4) is bonded to four equivalent Dy(1) and one Ga(1) atom to form distorted SDy4Ga trigonal bipyramids that share  a cornercorner with one S(3)Dy3Ga tetrahedra, corners with four equivalent S(2)Dy4 tetrahedra, edges with two equivalent S(3)Dy3Ga tetrahedra, edges with two equivalent S(2)Dy4 tetrahedra, and edges with two equivalent S(4)Dy4Ga trigonal bipyramids. is represented by the CIF file [CIF]
data_Dy3GaS6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.503
_cell_length_b   8.503
_cell_length_c   6.439
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.362
_symmetry_Int_Tables_number   1
_cell_volume   454.745
_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
  Dy  Dy0  1  0.284  0.086  0.227  1.0
  Dy  Dy1  1  0.914  0.716  0.227  1.0
  Dy  Dy2  1  0.716  0.914  0.727  1.0
  Dy  Dy3  1  0.086  0.284  0.727  1.0
  Dy  Dy4  1  0.402  0.598  0.136  1.0
  Dy  Dy5  1  0.598  0.402  0.636  1.0
  Ga  Ga6  1  0.201  0.799  0.763  1.0
  Ga  Ga7  1  0.799  0.201  0.263  1.0
  S  S8  1  0.567  0.102  0.441  1.0
  S  S9  1  0.898  0.433  0.441  1.0
  S  S10  1  0.433  0.898  0.941  1.0
  S  S11  1  0.102  0.567  0.941  1.0
  S  S12  1  0.632  0.693  0.430  1.0
  S  S13  1  0.307  0.368  0.430  1.0
  S  S14  1  0.368  0.307  0.930  1.0
  S  S15  1  0.693  0.632  0.930  1.0
  S  S16  1  0.217  0.783  0.413  1.0
  S  S17  1  0.783  0.217  0.913  1.0
  S  S18  1  0.959  0.041  0.407  1.0
  S  S19  1  0.041  0.959  0.907  1.0
[/CIF]
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The structure described by Dy3GaS6 crystallizes in the orthorhombic Cmc2_1 space group. There are two inequivalent Dy sites. In the first Dy site, Dy(1) is bonded to one S(3), two equivalent S(1), two equivalent S(2), and two equivalent S(4) atoms to form distorted DyS7 pentagonal bipyramids that share corners with four equivalent Dy(1)S7 pentagonal bipyramids, corners with three equivalent Ga(1)S4 tetrahedra, edges with two equivalent Dy(1)S7 pentagonal bipyramids,  an edgeedge with one Ga(1)S4 tetrahedra, and  a faceface with one Dy(1)S7 pentagonal bipyramid. In the second Dy site, Dy(2) is bonded in a 7-coordinate geometry to one S(3), two equivalent S(1), and four equivalent S(2) atoms. Ga(1) is bonded to one S(3), one S(4), and two equivalent S(1) atoms to form GaS4 tetrahedra that share corners with six equivalent Dy(1)S7 pentagonal bipyramids and edges with two equivalent Dy(1)S7 pentagonal bipyramids. There are four inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Dy(2), two equivalent Dy(1), and one Ga(1) atom. In the second S site, S(2) is bonded to two equivalent Dy(1) and two equivalent Dy(2) atoms to form SDy4 tetrahedra that share corners with two equivalent S(2)Dy4 tetrahedra, corners with four equivalent S(3)Dy3Ga tetrahedra, corners with two equivalent S(4)Dy4Ga trigonal bipyramids, edges with three equivalent S(2)Dy4 tetrahedra, and  an edgeedge with one S(4)Dy4Ga trigonal bipyramid. In the third S site, S(3) is bonded to one Dy(2), two equivalent Dy(1), and one Ga(1) atom to form distorted SDy3Ga tetrahedra that share corners with eight equivalent S(2)Dy4 tetrahedra,  a cornercorner with one S(4)Dy4Ga trigonal bipyramid, and edges with two equivalent S(4)Dy4Ga trigonal bipyramids. In the fourth S site, S(4) is bonded to four equivalent Dy(1) and one Ga(1) atom to form distorted SDy4Ga trigonal bipyramids that share  a cornercorner with one S(3)Dy3Ga tetrahedra, corners with four equivalent S(2)Dy4 tetrahedra, edges with two equivalent S(3)Dy3Ga tetrahedra, edges with two equivalent S(2)Dy4 tetrahedra, and edges with two equivalent S(4)Dy4Ga trigonal bipyramids. is represented by the CIF file [CIF]
data_Dy3GaS6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.503
_cell_length_b   8.503
_cell_length_c   6.439
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   102.362
_symmetry_Int_Tables_number   1
_cell_volume   454.745
_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
  Dy  Dy0  1  0.284  0.086  0.227  1.0
  Dy  Dy1  1  0.914  0.716  0.227  1.0
  Dy  Dy2  1  0.716  0.914  0.727  1.0
  Dy  Dy3  1  0.086  0.284  0.727  1.0
  Dy  Dy4  1  0.402  0.598  0.136  1.0
  Dy  Dy5  1  0.598  0.402  0.636  1.0
  Ga  Ga6  1  0.201  0.799  0.763  1.0
  Ga  Ga7  1  0.799  0.201  0.263  1.0
  S  S8  1  0.567  0.102  0.441  1.0
  S  S9  1  0.898  0.433  0.441  1.0
  S  S10  1  0.433  0.898  0.941  1.0
  S  S11  1  0.102  0.567  0.941  1.0
  S  S12  1  0.632  0.693  0.430  1.0
  S  S13  1  0.307  0.368  0.430  1.0
  S  S14  1  0.368  0.307  0.930  1.0
  S  S15  1  0.693  0.632  0.930  1.0
  S  S16  1  0.217  0.783  0.413  1.0
  S  S17  1  0.783  0.217  0.913  1.0
  S  S18  1  0.959  0.041  0.407  1.0
  S  S19  1  0.041  0.959  0.907  1.0
[/CIF]
.