The material described by Tb2WO6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(4) atoms. In the third Tb site, Tb(3) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. W(1) is bonded in a distorted trigonal bipyramidal geometry to one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Tb(3) and one W(1) atom. In the second O site, O(1) is bonded to two equivalent Tb(1) and two equivalent Tb(3) atoms to form OTb4 tetrahedra that share corners with two equivalent O(1)Tb4 tetrahedra, corners with four equivalent O(3)Tb3W tetrahedra,  an edgeedge with one O(3)Tb3W tetrahedra, and edges with three equivalent O(1)Tb4 tetrahedra. In the third O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Tb(3) and one W(1) atom. In the fourth O site, O(3) is bonded to one Tb(1), one Tb(2), one Tb(3), and one W(1) atom to form OTb3W tetrahedra that share corners with two equivalent O(3)Tb3W tetrahedra, corners with four equivalent O(1)Tb4 tetrahedra, and  an edgeedge with one O(1)Tb4 tetrahedra. In the fifth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tb(2) and one W(1) atom. In the sixth O site, O(5) is bonded in a 4-coordinate geometry to one Tb(1), one Tb(2), one Tb(3), and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.932
_cell_length_b   9.932
_cell_length_c   5.431
_cell_angle_alpha   75.813
_cell_angle_beta   75.813
_cell_angle_gamma   68.454
_symmetry_Int_Tables_number   1
_cell_volume   475.977
_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
  Tb  Tb0  1  0.106  0.894  0.750  1.0
  Tb  Tb1  1  0.634  0.366  0.750  1.0
  Tb  Tb2  1  0.944  0.714  0.383  1.0
  Tb  Tb3  1  0.714  0.944  0.883  1.0
  Tb  Tb4  1  0.286  0.056  0.117  1.0
  Tb  Tb5  1  0.056  0.286  0.617  1.0
  Tb  Tb6  1  0.366  0.634  0.250  1.0
  Tb  Tb7  1  0.894  0.106  0.250  1.0
  W  W8  1  0.506  0.800  0.566  1.0
  W  W9  1  0.200  0.494  0.934  1.0
  W  W10  1  0.800  0.506  0.066  1.0
  W  W11  1  0.494  0.200  0.434  1.0
  O  O12  1  0.893  0.924  0.078  1.0
  O  O13  1  0.527  0.938  0.263  1.0
  O  O14  1  0.313  0.840  0.421  1.0
  O  O15  1  0.544  0.612  0.521  1.0
  O  O16  1  0.388  0.456  0.979  1.0
  O  O17  1  0.160  0.687  0.079  1.0
  O  O18  1  0.924  0.893  0.578  1.0
  O  O19  1  0.176  0.620  0.617  1.0
  O  O20  1  0.620  0.176  0.117  1.0
  O  O21  1  0.216  0.317  0.853  1.0
  O  O22  1  0.317  0.216  0.353  1.0
  O  O23  1  0.062  0.473  0.237  1.0
  O  O24  1  0.938  0.527  0.763  1.0
  O  O25  1  0.683  0.784  0.647  1.0
  O  O26  1  0.784  0.683  0.147  1.0
  O  O27  1  0.380  0.824  0.883  1.0
  O  O28  1  0.824  0.380  0.383  1.0
  O  O29  1  0.076  0.107  0.422  1.0
  O  O30  1  0.840  0.313  0.921  1.0
  O  O31  1  0.612  0.544  0.021  1.0
  O  O32  1  0.456  0.388  0.479  1.0
  O  O33  1  0.687  0.160  0.579  1.0
  O  O34  1  0.473  0.062  0.737  1.0
  O  O35  1  0.107  0.076  0.922  1.0
[/CIF]
.
The material described by Tb2WO6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. In the second Tb site, Tb(2) is bonded in a 8-coordinate geometry to two equivalent O(3), two equivalent O(5), and four equivalent O(4) atoms. In the third Tb site, Tb(3) is bonded in a 8-coordinate geometry to one O(3), one O(5), two equivalent O(1), two equivalent O(2), and two equivalent O(6) atoms. W(1) is bonded in a distorted trigonal bipyramidal geometry to one O(2), one O(3), one O(4), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Tb(3) and one W(1) atom. In the second O site, O(1) is bonded to two equivalent Tb(1) and two equivalent Tb(3) atoms to form OTb4 tetrahedra that share corners with two equivalent O(1)Tb4 tetrahedra, corners with four equivalent O(3)Tb3W tetrahedra,  an edgeedge with one O(3)Tb3W tetrahedra, and edges with three equivalent O(1)Tb4 tetrahedra. In the third O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Tb(3) and one W(1) atom. In the fourth O site, O(3) is bonded to one Tb(1), one Tb(2), one Tb(3), and one W(1) atom to form OTb3W tetrahedra that share corners with two equivalent O(3)Tb3W tetrahedra, corners with four equivalent O(1)Tb4 tetrahedra, and  an edgeedge with one O(1)Tb4 tetrahedra. In the fifth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tb(2) and one W(1) atom. In the sixth O site, O(5) is bonded in a 4-coordinate geometry to one Tb(1), one Tb(2), one Tb(3), and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.932
_cell_length_b   9.932
_cell_length_c   5.431
_cell_angle_alpha   75.813
_cell_angle_beta   75.813
_cell_angle_gamma   68.454
_symmetry_Int_Tables_number   1
_cell_volume   475.977
_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
  Tb  Tb0  1  0.106  0.894  0.750  1.0
  Tb  Tb1  1  0.634  0.366  0.750  1.0
  Tb  Tb2  1  0.944  0.714  0.383  1.0
  Tb  Tb3  1  0.714  0.944  0.883  1.0
  Tb  Tb4  1  0.286  0.056  0.117  1.0
  Tb  Tb5  1  0.056  0.286  0.617  1.0
  Tb  Tb6  1  0.366  0.634  0.250  1.0
  Tb  Tb7  1  0.894  0.106  0.250  1.0
  W  W8  1  0.506  0.800  0.566  1.0
  W  W9  1  0.200  0.494  0.934  1.0
  W  W10  1  0.800  0.506  0.066  1.0
  W  W11  1  0.494  0.200  0.434  1.0
  O  O12  1  0.893  0.924  0.078  1.0
  O  O13  1  0.527  0.938  0.263  1.0
  O  O14  1  0.313  0.840  0.421  1.0
  O  O15  1  0.544  0.612  0.521  1.0
  O  O16  1  0.388  0.456  0.979  1.0
  O  O17  1  0.160  0.687  0.079  1.0
  O  O18  1  0.924  0.893  0.578  1.0
  O  O19  1  0.176  0.620  0.617  1.0
  O  O20  1  0.620  0.176  0.117  1.0
  O  O21  1  0.216  0.317  0.853  1.0
  O  O22  1  0.317  0.216  0.353  1.0
  O  O23  1  0.062  0.473  0.237  1.0
  O  O24  1  0.938  0.527  0.763  1.0
  O  O25  1  0.683  0.784  0.647  1.0
  O  O26  1  0.784  0.683  0.147  1.0
  O  O27  1  0.380  0.824  0.883  1.0
  O  O28  1  0.824  0.380  0.383  1.0
  O  O29  1  0.076  0.107  0.422  1.0
  O  O30  1  0.840  0.313  0.921  1.0
  O  O31  1  0.612  0.544  0.021  1.0
  O  O32  1  0.456  0.388  0.479  1.0
  O  O33  1  0.687  0.160  0.579  1.0
  O  O34  1  0.473  0.062  0.737  1.0
  O  O35  1  0.107  0.076  0.922  1.0
[/CIF]
.