The material described by Na3Sc2(WO4)3 crystallizes in the monoclinic C2/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(3) atoms. In the third Na site, Na(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(6) atoms. Sc(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form ScO6 octahedra that share corners with two equivalent W(1)O4 tetrahedra, corners with four equivalent W(2)O4 tetrahedra, and  an edgeedge with one Sc(1)O6 octahedra. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(4) and two equivalent O(5) atoms to form distorted WO4 tetrahedra that share corners with four equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form WO4 tetrahedra that share corners with four equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sc(1) and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Sc(1), and one W(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Na(2), and one W(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Na(2), one Sc(1), and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Sc(1), and one W(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(3), one Sc(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ONa2ScW trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Sc2(WO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.263
_cell_length_b   9.263
_cell_length_c   7.293
_cell_angle_alpha   75.838
_cell_angle_beta   75.838
_cell_angle_gamma   96.318
_symmetry_Int_Tables_number   1
_cell_volume   578.568
_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
  Na  Na0  1  0.228  0.772  0.250  1.0
  Na  Na1  1  0.772  0.228  0.750  1.0
  Na  Na2  1  0.000  0.000  0.000  1.0
  Na  Na3  1  0.000  0.000  0.500  1.0
  Na  Na4  1  0.510  0.490  0.250  1.0
  Na  Na5  1  0.490  0.510  0.750  1.0
  Sc  Sc6  1  0.554  0.866  0.378  1.0
  Sc  Sc7  1  0.446  0.134  0.622  1.0
  Sc  Sc8  1  0.134  0.446  0.122  1.0
  Sc  Sc9  1  0.866  0.554  0.878  1.0
  W  W10  1  0.780  0.220  0.250  1.0
  W  W11  1  0.220  0.780  0.750  1.0
  W  W12  1  0.383  0.156  0.122  1.0
  W  W13  1  0.617  0.844  0.878  1.0
  W  W14  1  0.844  0.617  0.378  1.0
  W  W15  1  0.156  0.383  0.622  1.0
  O  O16  1  0.468  0.084  0.340  1.0
  O  O17  1  0.532  0.916  0.660  1.0
  O  O18  1  0.916  0.532  0.160  1.0
  O  O19  1  0.084  0.468  0.840  1.0
  O  O20  1  0.495  0.840  0.129  1.0
  O  O21  1  0.505  0.160  0.871  1.0
  O  O22  1  0.160  0.505  0.371  1.0
  O  O23  1  0.840  0.495  0.629  1.0
  O  O24  1  0.200  0.033  0.219  1.0
  O  O25  1  0.800  0.967  0.781  1.0
  O  O26  1  0.967  0.800  0.281  1.0
  O  O27  1  0.033  0.200  0.719  1.0
  O  O28  1  0.760  0.019  0.228  1.0
  O  O29  1  0.240  0.981  0.772  1.0
  O  O30  1  0.981  0.240  0.272  1.0
  O  O31  1  0.019  0.760  0.728  1.0
  O  O32  1  0.665  0.273  0.469  1.0
  O  O33  1  0.335  0.727  0.531  1.0
  O  O34  1  0.727  0.335  0.031  1.0
  O  O35  1  0.273  0.665  0.969  1.0
  O  O36  1  0.644  0.667  0.424  1.0
  O  O37  1  0.356  0.333  0.576  1.0
  O  O38  1  0.333  0.356  0.076  1.0
  O  O39  1  0.667  0.644  0.924  1.0
[/CIF]
.
The material described by Na3Sc2(WO4)3 crystallizes in the monoclinic C2/c space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to two equivalent O(4) and four equivalent O(3) atoms. In the third Na site, Na(3) is bonded in a distorted rectangular see-saw-like geometry to four equivalent O(6) atoms. Sc(1) is bonded to one O(2), one O(4), one O(5), one O(6), and two equivalent O(1) atoms to form ScO6 octahedra that share corners with two equivalent W(1)O4 tetrahedra, corners with four equivalent W(2)O4 tetrahedra, and  an edgeedge with one Sc(1)O6 octahedra. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(4) and two equivalent O(5) atoms to form distorted WO4 tetrahedra that share corners with four equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 60-63°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form WO4 tetrahedra that share corners with four equivalent Sc(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sc(1) and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Sc(1), and one W(2) atom. In the third O site, O(3) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), two equivalent Na(2), and one W(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Na(2), one Sc(1), and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), one Sc(1), and one W(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(3), one Sc(1), and one W(2) atom to form a mixture of distorted edge and corner-sharing ONa2ScW trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3Sc2(WO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.263
_cell_length_b   9.263
_cell_length_c   7.293
_cell_angle_alpha   75.838
_cell_angle_beta   75.838
_cell_angle_gamma   96.318
_symmetry_Int_Tables_number   1
_cell_volume   578.568
_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
  Na  Na0  1  0.228  0.772  0.250  1.0
  Na  Na1  1  0.772  0.228  0.750  1.0
  Na  Na2  1  0.000  0.000  0.000  1.0
  Na  Na3  1  0.000  0.000  0.500  1.0
  Na  Na4  1  0.510  0.490  0.250  1.0
  Na  Na5  1  0.490  0.510  0.750  1.0
  Sc  Sc6  1  0.554  0.866  0.378  1.0
  Sc  Sc7  1  0.446  0.134  0.622  1.0
  Sc  Sc8  1  0.134  0.446  0.122  1.0
  Sc  Sc9  1  0.866  0.554  0.878  1.0
  W  W10  1  0.780  0.220  0.250  1.0
  W  W11  1  0.220  0.780  0.750  1.0
  W  W12  1  0.383  0.156  0.122  1.0
  W  W13  1  0.617  0.844  0.878  1.0
  W  W14  1  0.844  0.617  0.378  1.0
  W  W15  1  0.156  0.383  0.622  1.0
  O  O16  1  0.468  0.084  0.340  1.0
  O  O17  1  0.532  0.916  0.660  1.0
  O  O18  1  0.916  0.532  0.160  1.0
  O  O19  1  0.084  0.468  0.840  1.0
  O  O20  1  0.495  0.840  0.129  1.0
  O  O21  1  0.505  0.160  0.871  1.0
  O  O22  1  0.160  0.505  0.371  1.0
  O  O23  1  0.840  0.495  0.629  1.0
  O  O24  1  0.200  0.033  0.219  1.0
  O  O25  1  0.800  0.967  0.781  1.0
  O  O26  1  0.967  0.800  0.281  1.0
  O  O27  1  0.033  0.200  0.719  1.0
  O  O28  1  0.760  0.019  0.228  1.0
  O  O29  1  0.240  0.981  0.772  1.0
  O  O30  1  0.981  0.240  0.272  1.0
  O  O31  1  0.019  0.760  0.728  1.0
  O  O32  1  0.665  0.273  0.469  1.0
  O  O33  1  0.335  0.727  0.531  1.0
  O  O34  1  0.727  0.335  0.031  1.0
  O  O35  1  0.273  0.665  0.969  1.0
  O  O36  1  0.644  0.667  0.424  1.0
  O  O37  1  0.356  0.333  0.576  1.0
  O  O38  1  0.333  0.356  0.076  1.0
  O  O39  1  0.667  0.644  0.924  1.0
[/CIF]
.