data_Sm3O2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.7
_cell_length_b   6.7
_cell_length_c   6.7
_cell_angle_alpha   54.89
_cell_angle_beta   54.89
_cell_angle_gamma   54.89
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sm3O2
_chemical_formula_sum   'Sm6 O4'
_cell_volume   187.71
_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
  Sm  Sm4  1  0.06  0.78  0.93  1.0
  Sm  Sm5  1  0.01  0.19  0.93  1.0
  Sm  Sm6  1  0.92  0.03  0.93  1.0
  Sm  Sm7  1  0.08  0.97  0.09  1.0
  Sm  Sm8  1  0.99  0.81  0.09  1.0
  Sm  Sm9  1  0.94  0.22  0.09  1.0
  O  O0  1  0.0  0.0  0.22  1.0
  O  O1  1  0.0  0.0  0.32  1.0
  O  O2  1  0.0  0.0  0.71  1.0
  O  O3  1  0.0  0.0  0.8  1.0

data_Sm3O2
_symmetry_space_group_name_H-M   P-1
_cell_length_a   6.18
_cell_length_b   6.18
_cell_length_c   6.7
_cell_angle_alpha   62.55
_cell_angle_beta   62.55
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   Sm3O2
_chemical_formula_sum   'Sm6 O4'
_cell_volume   187.71
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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
  Sm  Sm0  2  0.03  0.42  0.13  1.0
  Sm  Sm1  2  0.19  0.42  0.88  1.0
  Sm  Sm2  2  0.22  0.58  0.76  1.0
  O  O3  2  0.0  0.2  0.3  1.0
  O  O4  2  0.0  0.29  0.21  1.0

Sm Sm Sm Sm Sm Sm O O O O
Sm3O2 is Copper structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one Sm3O2 cluster. There are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a single-bond geometry to one Sm(2), one O(1), and one O(2) atom. The Sm(1)-Sm(2) bond length is 0.98 Å. The Sm(1)-O(1) bond length is 1.14 Å. The Sm(1)-O(2) bond length is 1.42 Å. In the second Sm site, Sm(2) is bonded in a 4-coordinate geometry to one Sm(1), two equivalent Sm(3), and one O(1) atom. There is one shorter (1.21 Å) and one longer (1.53 Å) Sm(2)-Sm(3) bond length. The Sm(2)-O(1) bond length is 1.97 Å. In the third Sm site, Sm(3) is bonded in a single-bond geometry to two equivalent Sm(2) and one O(1) atom. The Sm(3)-O(1) bond length is 0.77 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sm(1), one Sm(2), one Sm(3), and one O(2) atom. The O(1)-O(2) bond length is 0.63 Å. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sm(1) and one O(1) atom.