The structure described by Tm2WO6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 8-coordinate geometry to one O(4), one O(6), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the second Tm site, Tm(2) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(6), and four equivalent O(5) atoms. In the third Tm site, Tm(3) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(6), and four equivalent O(1) atoms. W(1) is bonded in a 5-coordinate 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(5) is bonded in a 3-coordinate geometry to two equivalent Tm(2) and one W(1) atom. In the second O site, O(6) is bonded to one Tm(1), one Tm(2), one Tm(3), and one W(1) atom to form OTm3W tetrahedra that share corners with two equivalent O(6)Tm3W tetrahedra, corners with four equivalent O(1)Tm4 tetrahedra, and  an edgeedge with one O(1)Tm4 tetrahedra. In the third O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Tm(3) atoms to form OTm4 tetrahedra that share corners with two equivalent O(1)Tm4 tetrahedra, corners with four equivalent O(6)Tm3W tetrahedra,  an edgeedge with one O(6)Tm3W tetrahedra, and edges with three equivalent O(1)Tm4 tetrahedra. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Tm(1) and one W(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one W(1) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Tm(1), one Tm(2), one Tm(3), and one W(1) atom. is represented by the CIF file [CIF]
data_Tm2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.783
_cell_length_b   9.783
_cell_length_c   5.341
_cell_angle_alpha   75.833
_cell_angle_beta   75.833
_cell_angle_gamma   68.300
_symmetry_Int_Tables_number   1
_cell_volume   453.734
_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
  Tm  Tm0  1  0.945  0.717  0.382  1.0
  Tm  Tm1  1  0.717  0.945  0.882  1.0
  Tm  Tm2  1  0.365  0.635  0.250  1.0
  Tm  Tm3  1  0.896  0.104  0.250  1.0
  Tm  Tm4  1  0.104  0.896  0.750  1.0
  Tm  Tm5  1  0.635  0.365  0.750  1.0
  Tm  Tm6  1  0.283  0.055  0.118  1.0
  Tm  Tm7  1  0.055  0.283  0.618  1.0
  W  W8  1  0.801  0.506  0.068  1.0
  W  W9  1  0.506  0.801  0.568  1.0
  W  W10  1  0.494  0.199  0.432  1.0
  W  W11  1  0.199  0.494  0.932  1.0
  O  O12  1  0.892  0.926  0.078  1.0
  O  O13  1  0.926  0.892  0.578  1.0
  O  O14  1  0.526  0.941  0.258  1.0
  O  O15  1  0.785  0.687  0.147  1.0
  O  O16  1  0.941  0.526  0.758  1.0
  O  O17  1  0.687  0.785  0.647  1.0
  O  O18  1  0.823  0.379  0.391  1.0
  O  O19  1  0.379  0.823  0.891  1.0
  O  O20  1  0.610  0.545  0.019  1.0
  O  O21  1  0.310  0.841  0.422  1.0
  O  O22  1  0.545  0.610  0.519  1.0
  O  O23  1  0.841  0.310  0.922  1.0
  O  O24  1  0.159  0.690  0.078  1.0
  O  O25  1  0.455  0.390  0.481  1.0
  O  O26  1  0.690  0.159  0.578  1.0
  O  O27  1  0.390  0.455  0.981  1.0
  O  O28  1  0.621  0.177  0.109  1.0
  O  O29  1  0.177  0.621  0.609  1.0
  O  O30  1  0.313  0.215  0.353  1.0
  O  O31  1  0.059  0.474  0.242  1.0
  O  O32  1  0.215  0.313  0.853  1.0
  O  O33  1  0.474  0.059  0.742  1.0
  O  O34  1  0.074  0.108  0.422  1.0
  O  O35  1  0.108  0.074  0.922  1.0
[/CIF]
.
The structure described by Tm2WO6 crystallizes in the monoclinic C2/c space group. There are three inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 8-coordinate geometry to one O(4), one O(6), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the second Tm site, Tm(2) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(6), and four equivalent O(5) atoms. In the third Tm site, Tm(3) is bonded in a 8-coordinate geometry to two equivalent O(4), two equivalent O(6), and four equivalent O(1) atoms. W(1) is bonded in a 5-coordinate 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(5) is bonded in a 3-coordinate geometry to two equivalent Tm(2) and one W(1) atom. In the second O site, O(6) is bonded to one Tm(1), one Tm(2), one Tm(3), and one W(1) atom to form OTm3W tetrahedra that share corners with two equivalent O(6)Tm3W tetrahedra, corners with four equivalent O(1)Tm4 tetrahedra, and  an edgeedge with one O(1)Tm4 tetrahedra. In the third O site, O(1) is bonded to two equivalent Tm(1) and two equivalent Tm(3) atoms to form OTm4 tetrahedra that share corners with two equivalent O(1)Tm4 tetrahedra, corners with four equivalent O(6)Tm3W tetrahedra,  an edgeedge with one O(6)Tm3W tetrahedra, and edges with three equivalent O(1)Tm4 tetrahedra. In the fourth O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Tm(1) and one W(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Tm(1) and one W(1) atom. In the sixth O site, O(4) is bonded in a 4-coordinate geometry to one Tm(1), one Tm(2), one Tm(3), and one W(1) atom. is represented by the CIF file [CIF]
data_Tm2WO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.783
_cell_length_b   9.783
_cell_length_c   5.341
_cell_angle_alpha   75.833
_cell_angle_beta   75.833
_cell_angle_gamma   68.300
_symmetry_Int_Tables_number   1
_cell_volume   453.734
_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
  Tm  Tm0  1  0.945  0.717  0.382  1.0
  Tm  Tm1  1  0.717  0.945  0.882  1.0
  Tm  Tm2  1  0.365  0.635  0.250  1.0
  Tm  Tm3  1  0.896  0.104  0.250  1.0
  Tm  Tm4  1  0.104  0.896  0.750  1.0
  Tm  Tm5  1  0.635  0.365  0.750  1.0
  Tm  Tm6  1  0.283  0.055  0.118  1.0
  Tm  Tm7  1  0.055  0.283  0.618  1.0
  W  W8  1  0.801  0.506  0.068  1.0
  W  W9  1  0.506  0.801  0.568  1.0
  W  W10  1  0.494  0.199  0.432  1.0
  W  W11  1  0.199  0.494  0.932  1.0
  O  O12  1  0.892  0.926  0.078  1.0
  O  O13  1  0.926  0.892  0.578  1.0
  O  O14  1  0.526  0.941  0.258  1.0
  O  O15  1  0.785  0.687  0.147  1.0
  O  O16  1  0.941  0.526  0.758  1.0
  O  O17  1  0.687  0.785  0.647  1.0
  O  O18  1  0.823  0.379  0.391  1.0
  O  O19  1  0.379  0.823  0.891  1.0
  O  O20  1  0.610  0.545  0.019  1.0
  O  O21  1  0.310  0.841  0.422  1.0
  O  O22  1  0.545  0.610  0.519  1.0
  O  O23  1  0.841  0.310  0.922  1.0
  O  O24  1  0.159  0.690  0.078  1.0
  O  O25  1  0.455  0.390  0.481  1.0
  O  O26  1  0.690  0.159  0.578  1.0
  O  O27  1  0.390  0.455  0.981  1.0
  O  O28  1  0.621  0.177  0.109  1.0
  O  O29  1  0.177  0.621  0.609  1.0
  O  O30  1  0.313  0.215  0.353  1.0
  O  O31  1  0.059  0.474  0.242  1.0
  O  O32  1  0.215  0.313  0.853  1.0
  O  O33  1  0.474  0.059  0.742  1.0
  O  O34  1  0.074  0.108  0.422  1.0
  O  O35  1  0.108  0.074  0.922  1.0
[/CIF]
.