The crystal structure described by Gd2S3 is Stibnite structured and crystallizes in the monoclinic Pm space group. There are eight inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one S(12), one S(2), one S(6), two equivalent S(4), and two equivalent S(9) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one S(12), one S(3), two equivalent S(11), two equivalent S(7), and two equivalent S(9) atoms. In the third Gd site, Gd(3) is bonded to one S(1), one S(5), one S(7), two equivalent S(10), and two equivalent S(3) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the fourth Gd site, Gd(4) is bonded in a 8-coordinate geometry to one S(2), one S(8), two equivalent S(1), two equivalent S(4), and two equivalent S(5) atoms. In the fifth Gd site, Gd(5) is bonded to one S(1), one S(7), one S(9), two equivalent S(6), and two equivalent S(8) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the sixth Gd site, Gd(6) is bonded in a 8-coordinate geometry to one S(1), one S(11), two equivalent S(2), two equivalent S(3), and two equivalent S(6) atoms. In the seventh Gd site, Gd(7) is bonded in a 8-coordinate geometry to one S(4), one S(7), two equivalent S(10), two equivalent S(12), and two equivalent S(8) atoms. In the eighth Gd site, Gd(8) is bonded to one S(10), one S(12), one S(2), two equivalent S(11), and two equivalent S(5) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. There are twelve inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Gd(3), one Gd(5), one Gd(6), and two equivalent Gd(4) atoms. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(4), one Gd(8), and two equivalent Gd(6) atoms. In the third S site, S(3) is bonded to one Gd(2), two equivalent Gd(3), and two equivalent Gd(6) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Gd(7), two equivalent Gd(1), and two equivalent Gd(4) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Gd(3), two equivalent Gd(4), and two equivalent Gd(8) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the sixth S site, S(6) is bonded to one Gd(1), two equivalent Gd(5), and two equivalent Gd(6) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to one Gd(3), one Gd(5), one Gd(7), and two equivalent Gd(2) atoms. In the eighth S site, S(8) is bonded to one Gd(4), two equivalent Gd(5), and two equivalent Gd(7) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the ninth S site, S(9) is bonded to one Gd(5), two equivalent Gd(1), and two equivalent Gd(2) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the tenth S site, S(10) is bonded to one Gd(8), two equivalent Gd(3), and two equivalent Gd(7) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the eleventh S site, S(11) is bonded to one Gd(6), two equivalent Gd(2), and two equivalent Gd(8) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the twelfth S site, S(12) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(2), one Gd(8), and two equivalent Gd(7) atoms. is represented by the CIF file [CIF]
data_Gd2S3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.924
_cell_length_b   10.572
_cell_length_c   10.748
_cell_angle_alpha   89.981
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   445.890
_cell_formula_units_Z   4
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
  Gd  Gd0  1  0.250  0.313  0.991  1.0
  Gd  Gd1  1  0.250  0.506  0.309  1.0
  Gd  Gd2  1  0.750  0.814  0.510  1.0
  Gd  Gd3  1  0.250  0.995  0.808  1.0
  Gd  Gd4  1  0.750  0.686  0.009  1.0
  Gd  Gd5  1  0.750  0.495  0.691  1.0
  Gd  Gd6  1  0.750  0.004  0.191  1.0
  Gd  Gd7  1  0.250  0.188  0.491  1.0
  S  S8  1  0.750  0.803  0.772  1.0
  S  S9  1  0.250  0.304  0.729  1.0
  S  S10  1  0.250  0.628  0.547  1.0
  S  S11  1  0.750  0.127  0.953  1.0
  S  S12  1  0.750  0.055  0.620  1.0
  S  S13  1  0.250  0.555  0.881  1.0
  S  S14  1  0.750  0.697  0.272  1.0
  S  S15  1  0.250  0.873  0.046  1.0
  S  S16  1  0.750  0.444  0.120  1.0
  S  S17  1  0.250  0.944  0.380  1.0
  S  S18  1  0.750  0.374  0.453  1.0
  S  S19  1  0.250  0.195  0.228  1.0
[/CIF]
.
The crystal structure described by Gd2S3 is Stibnite structured and crystallizes in the monoclinic Pm space group. There are eight inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one S(12), one S(2), one S(6), two equivalent S(4), and two equivalent S(9) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the second Gd site, Gd(2) is bonded in a 8-coordinate geometry to one S(12), one S(3), two equivalent S(11), two equivalent S(7), and two equivalent S(9) atoms. In the third Gd site, Gd(3) is bonded to one S(1), one S(5), one S(7), two equivalent S(10), and two equivalent S(3) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the fourth Gd site, Gd(4) is bonded in a 8-coordinate geometry to one S(2), one S(8), two equivalent S(1), two equivalent S(4), and two equivalent S(5) atoms. In the fifth Gd site, Gd(5) is bonded to one S(1), one S(7), one S(9), two equivalent S(6), and two equivalent S(8) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. In the sixth Gd site, Gd(6) is bonded in a 8-coordinate geometry to one S(1), one S(11), two equivalent S(2), two equivalent S(3), and two equivalent S(6) atoms. In the seventh Gd site, Gd(7) is bonded in a 8-coordinate geometry to one S(4), one S(7), two equivalent S(10), two equivalent S(12), and two equivalent S(8) atoms. In the eighth Gd site, Gd(8) is bonded to one S(10), one S(12), one S(2), two equivalent S(11), and two equivalent S(5) atoms to form a mixture of distorted corner and edge-sharing GdS7 pentagonal bipyramids. There are twelve inequivalent S sites. In the first S site, S(1) is bonded in a 5-coordinate geometry to one Gd(3), one Gd(5), one Gd(6), and two equivalent Gd(4) atoms. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(4), one Gd(8), and two equivalent Gd(6) atoms. In the third S site, S(3) is bonded to one Gd(2), two equivalent Gd(3), and two equivalent Gd(6) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Gd(7), two equivalent Gd(1), and two equivalent Gd(4) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Gd(3), two equivalent Gd(4), and two equivalent Gd(8) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the sixth S site, S(6) is bonded to one Gd(1), two equivalent Gd(5), and two equivalent Gd(6) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the seventh S site, S(7) is bonded in a 5-coordinate geometry to one Gd(3), one Gd(5), one Gd(7), and two equivalent Gd(2) atoms. In the eighth S site, S(8) is bonded to one Gd(4), two equivalent Gd(5), and two equivalent Gd(7) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the ninth S site, S(9) is bonded to one Gd(5), two equivalent Gd(1), and two equivalent Gd(2) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the tenth S site, S(10) is bonded to one Gd(8), two equivalent Gd(3), and two equivalent Gd(7) atoms to form a mixture of corner and edge-sharing SGd5 square pyramids. In the eleventh S site, S(11) is bonded to one Gd(6), two equivalent Gd(2), and two equivalent Gd(8) atoms to form a mixture of distorted corner and edge-sharing SGd5 trigonal bipyramids. In the twelfth S site, S(12) is bonded in a 5-coordinate geometry to one Gd(1), one Gd(2), one Gd(8), and two equivalent Gd(7) atoms. is represented by the CIF file [CIF]
data_Gd2S3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.924
_cell_length_b   10.572
_cell_length_c   10.748
_cell_angle_alpha   89.981
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   445.890
_cell_formula_units_Z   4
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
  Gd  Gd0  1  0.250  0.313  0.991  1.0
  Gd  Gd1  1  0.250  0.506  0.309  1.0
  Gd  Gd2  1  0.750  0.814  0.510  1.0
  Gd  Gd3  1  0.250  0.995  0.808  1.0
  Gd  Gd4  1  0.750  0.686  0.009  1.0
  Gd  Gd5  1  0.750  0.495  0.691  1.0
  Gd  Gd6  1  0.750  0.004  0.191  1.0
  Gd  Gd7  1  0.250  0.188  0.491  1.0
  S  S8  1  0.750  0.803  0.772  1.0
  S  S9  1  0.250  0.304  0.729  1.0
  S  S10  1  0.250  0.628  0.547  1.0
  S  S11  1  0.750  0.127  0.953  1.0
  S  S12  1  0.750  0.055  0.620  1.0
  S  S13  1  0.250  0.555  0.881  1.0
  S  S14  1  0.750  0.697  0.272  1.0
  S  S15  1  0.250  0.873  0.046  1.0
  S  S16  1  0.750  0.444  0.120  1.0
  S  S17  1  0.250  0.944  0.380  1.0
  S  S18  1  0.750  0.374  0.453  1.0
  S  S19  1  0.250  0.195  0.228  1.0
[/CIF]
.