The crystal structure described by Sm2WO6 crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded to one O(2), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted SmO7 hexagonal pyramids that share corners with three equivalent W(1)O6 octahedra, edges with two equivalent Sm(2)O7 hexagonal pyramids, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-45°. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with three equivalent Sm(2)O7 hexagonal pyramids and edges with two equivalent Sm(2)O7 hexagonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to two equivalent Sm(1) and one W(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sm(1), one Sm(2), and one W(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Sm(1), one Sm(2), and one W(1) atom. In the fifth O site, O(5) is bonded to one Sm(1), two equivalent Sm(2), and one W(1) atom to form a mixture of distorted corner and edge-sharing OSm3W tetrahedra. In the sixth O site, O(6) is bonded to one Sm(1), two equivalent Sm(2), and one W(1) atom to form a mixture of corner and edge-sharing OSm3W tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.333
_cell_length_b   9.221
_cell_length_c   10.085
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.944
_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
  Sm  Sm0  1  0.024  0.396  0.036  1.0
  Sm  Sm1  1  0.033  0.281  0.630  1.0
  Sm  Sm2  1  0.467  0.719  0.130  1.0
  Sm  Sm3  1  0.476  0.604  0.536  1.0
  Sm  Sm4  1  0.524  0.104  0.964  1.0
  Sm  Sm5  1  0.533  0.219  0.370  1.0
  Sm  Sm6  1  0.967  0.781  0.870  1.0
  Sm  Sm7  1  0.976  0.896  0.464  1.0
  W  W8  1  0.042  0.004  0.151  1.0
  W  W9  1  0.458  0.996  0.651  1.0
  W  W10  1  0.542  0.496  0.849  1.0
  W  W11  1  0.958  0.504  0.349  1.0
  O  O12  1  0.072  0.652  0.473  1.0
  O  O13  1  0.172  0.549  0.210  1.0
  O  O14  1  0.188  0.864  0.680  1.0
  O  O15  1  0.188  0.862  0.262  1.0
  O  O16  1  0.224  0.389  0.434  1.0
  O  O17  1  0.249  0.090  0.509  1.0
  O  O18  1  0.251  0.910  0.009  1.0
  O  O19  1  0.276  0.611  0.934  1.0
  O  O20  1  0.312  0.138  0.762  1.0
  O  O21  1  0.312  0.136  0.180  1.0
  O  O22  1  0.328  0.451  0.710  1.0
  O  O23  1  0.428  0.348  0.973  1.0
  O  O24  1  0.572  0.848  0.527  1.0
  O  O25  1  0.672  0.951  0.790  1.0
  O  O26  1  0.688  0.636  0.320  1.0
  O  O27  1  0.688  0.638  0.738  1.0
  O  O28  1  0.724  0.111  0.566  1.0
  O  O29  1  0.749  0.410  0.491  1.0
  O  O30  1  0.751  0.590  0.991  1.0
  O  O31  1  0.776  0.889  0.066  1.0
  O  O32  1  0.812  0.362  0.238  1.0
  O  O33  1  0.812  0.364  0.820  1.0
  O  O34  1  0.828  0.049  0.290  1.0
  O  O35  1  0.928  0.152  0.027  1.0
[/CIF]
.
The crystal structure described by Sm2WO6 crystallizes in the orthorhombic P2_12_12_1 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), one O(5), one O(6), and two equivalent O(1) atoms. In the second Sm site, Sm(2) is bonded to one O(2), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms to form distorted SmO7 hexagonal pyramids that share corners with three equivalent W(1)O6 octahedra, edges with two equivalent Sm(2)O7 hexagonal pyramids, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-45°. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share corners with three equivalent Sm(2)O7 hexagonal pyramids and edges with two equivalent Sm(2)O7 hexagonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to two equivalent Sm(1) and one W(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sm(1), one Sm(2), and one W(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Sm(1), one Sm(2), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Sm(1), one Sm(2), and one W(1) atom. In the fifth O site, O(5) is bonded to one Sm(1), two equivalent Sm(2), and one W(1) atom to form a mixture of distorted corner and edge-sharing OSm3W tetrahedra. In the sixth O site, O(6) is bonded to one Sm(1), two equivalent Sm(2), and one W(1) atom to form a mixture of corner and edge-sharing OSm3W tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sm2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.333
_cell_length_b   9.221
_cell_length_c   10.085
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   495.944
_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
  Sm  Sm0  1  0.024  0.396  0.036  1.0
  Sm  Sm1  1  0.033  0.281  0.630  1.0
  Sm  Sm2  1  0.467  0.719  0.130  1.0
  Sm  Sm3  1  0.476  0.604  0.536  1.0
  Sm  Sm4  1  0.524  0.104  0.964  1.0
  Sm  Sm5  1  0.533  0.219  0.370  1.0
  Sm  Sm6  1  0.967  0.781  0.870  1.0
  Sm  Sm7  1  0.976  0.896  0.464  1.0
  W  W8  1  0.042  0.004  0.151  1.0
  W  W9  1  0.458  0.996  0.651  1.0
  W  W10  1  0.542  0.496  0.849  1.0
  W  W11  1  0.958  0.504  0.349  1.0
  O  O12  1  0.072  0.652  0.473  1.0
  O  O13  1  0.172  0.549  0.210  1.0
  O  O14  1  0.188  0.864  0.680  1.0
  O  O15  1  0.188  0.862  0.262  1.0
  O  O16  1  0.224  0.389  0.434  1.0
  O  O17  1  0.249  0.090  0.509  1.0
  O  O18  1  0.251  0.910  0.009  1.0
  O  O19  1  0.276  0.611  0.934  1.0
  O  O20  1  0.312  0.138  0.762  1.0
  O  O21  1  0.312  0.136  0.180  1.0
  O  O22  1  0.328  0.451  0.710  1.0
  O  O23  1  0.428  0.348  0.973  1.0
  O  O24  1  0.572  0.848  0.527  1.0
  O  O25  1  0.672  0.951  0.790  1.0
  O  O26  1  0.688  0.636  0.320  1.0
  O  O27  1  0.688  0.638  0.738  1.0
  O  O28  1  0.724  0.111  0.566  1.0
  O  O29  1  0.749  0.410  0.491  1.0
  O  O30  1  0.751  0.590  0.991  1.0
  O  O31  1  0.776  0.889  0.066  1.0
  O  O32  1  0.812  0.362  0.238  1.0
  O  O33  1  0.812  0.364  0.820  1.0
  O  O34  1  0.828  0.049  0.290  1.0
  O  O35  1  0.928  0.152  0.027  1.0
[/CIF]
.