data_Gd2(CuSn2)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.14
_cell_length_b   13.14
_cell_length_c   13.14
_cell_angle_alpha   160.53
_cell_angle_beta   160.53
_cell_angle_gamma   27.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Gd2(CuSn2)3
_chemical_formula_sum   'Gd2 Cu3 Sn6'
_cell_volume   252.05
_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
  Gd  Gd3  1  0.0  0.0  0.5  1.0
  Gd  Gd4  1  0.0  0.0  0.08  1.0
  Cu  Cu0  1  0.0  0.0  0.45  1.0
  Cu  Cu1  1  0.22  0.0  0.53  1.0
  Cu  Cu2  1  0.0  0.22  0.53  1.0
  Sn  Sn5  1  0.22  0.0  0.39  1.0
  Sn  Sn6  1  0.0  0.22  0.39  1.0
  Sn  Sn7  1  0.22  0.0  0.31  1.0
  Sn  Sn8  1  0.0  0.22  0.31  1.0
  Sn  Sn9  1  0.0  0.0  0.93  1.0
  Sn  Sn10  1  0.0  0.0  0.03  1.0

data_Gd2(CuSn2)3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.29
_cell_length_b   6.29
_cell_length_c   13.14
_cell_angle_alpha   90.0
_cell_angle_beta   103.84
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Gd2(CuSn2)3
_chemical_formula_sum   'Gd4 Cu6 Sn12'
_cell_volume   504.1
_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
  Gd  Gd0  2  0.0  0.5  0.5  1.0
  Gd  Gd1  2  0.08  0.0  0.08  1.0
  Cu  Cu2  4  0.41  0.11  0.3  1.0
  Cu  Cu3  2  0.45  0.0  0.45  1.0
  Sn  Sn4  4  0.2  0.11  0.09  1.0
  Sn  Sn5  4  0.28  0.11  0.17  1.0
  Sn  Sn6  2  0.03  0.0  0.03  1.0
  Sn  Sn7  2  0.43  0.5  0.93  1.0

Gd Gd Cu Cu Cu Sn Sn Sn Sn Sn Sn
Gd2Cu3Sn6 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Gd2Cu3Sn6 clusters. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a single-bond geometry to one Cu(1) atom. The Gd(1)-Cu(1) bond length is 0.75 Å. In the second Gd site, Gd(2) is bonded in a trigonal non-coplanar geometry to one Sn(4) and two equivalent Sn(2) atoms. The Gd(2)-Sn(4) bond length is 0.64 Å. Both Gd(2)-Sn(2) bond lengths are 1.03 Å. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a single-bond geometry to one Gd(1) and two equivalent Cu(2) atoms. Both Cu(1)-Cu(2) bond lengths are 1.99 Å. In the second Cu site, Cu(2) is bonded in a distorted L-shaped geometry to one Cu(1), one Cu(2), and one Sn(1) atom. The Cu(2)-Cu(2) bond length is 1.40 Å. The Cu(2)-Sn(1) bond length is 1.76 Å. There are four inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted T-shaped geometry to one Cu(2), one Sn(1), and one Sn(2) atom. The Sn(1)-Sn(1) bond length is 1.40 Å. The Sn(1)-Sn(2) bond length is 1.08 Å. In the second Sn site, Sn(2) is bonded in a single-bond geometry to one Gd(2) and one Sn(1) atom. In the third Sn site, Sn(3) is bonded in a single-bond geometry to one Sn(4) atom. The Sn(3)-Sn(4) bond length is 1.26 Å. In the fourth Sn site, Sn(4) is bonded in a single-bond geometry to one Gd(2) and one Sn(3) atom.