The material structure described by Ta2WZn2O8 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(14), one O(15), one O(4), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. In the second Ta site, Ta(2) is bonded to one O(10), one O(13), one O(16), one O(2), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra,  a cornercorner with one Zn(2)O4 tetrahedra, corners with two equivalent Zn(4)O4 trigonal pyramids, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-60°. In the third Ta site, Ta(3) is bonded to one O(10), one O(12), one O(16), one O(2), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(4)O4 trigonal pyramids, and edges with two equivalent Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-61°. In the fourth Ta site, Ta(4) is bonded to one O(1), one O(11), one O(15), one O(4), one O(8), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra,  a cornercorner with one Zn(4)O4 trigonal pyramid, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-54°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-57°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(14), and one O(16) atom. In the second Zn site, Zn(2) is bonded to one O(11), one O(13), one O(14), and one O(15) atom to form distorted ZnO4 tetrahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and  an edgeedge with one Zn(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 51-80°. In the third Zn site, Zn(3) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(12), one O(14), and one O(9) atom. In the fourth Zn site, Zn(4) is bonded to one O(10), one O(11), one O(12), and one O(13) atom to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and  an edgeedge with one Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-76°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(4), and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(3), and one W(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ta(2), one Ta(3), and one W(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ta(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ta(3), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(4), one W(1), and one W(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ta(2), one Ta(3), one Zn(3), and one Zn(4) atom. In the eleventh O site, O(11) is bonded to one Ta(4), one Zn(2), one Zn(3), and one Zn(4) atom to form a mixture of distorted corner and edge-sharing OTaZn3 trigonal pyramids. In the twelfth O site, O(12) is bonded to one Ta(3), one Zn(1), one Zn(3), and one Zn(4) atom to form a mixture of corner and edge-sharing OTaZn3 tetrahedra. In the thirteenth O site, O(13) is bonded to one Ta(2), one Zn(1), one Zn(2), and one Zn(4) atom to form a mixture of corner and edge-sharing OTaZn3 tetrahedra. In the fourteenth O site, O(14) is bonded to one Ta(1), one Zn(1), one Zn(2), and one Zn(3) atom to form a mixture of distorted corner and edge-sharing OTaZn3 trigonal pyramids. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal non-coplanar geometry to one Ta(2), one Ta(3), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Ta2Zn2WO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.344
_cell_length_b   5.983
_cell_length_c   10.260
_cell_angle_alpha   105.035
_cell_angle_beta   90.733
_cell_angle_gamma   91.188
_symmetry_Int_Tables_number   1
_cell_volume   316.737
_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
  Ta  Ta0  1  0.265  0.040  0.762  1.0
  Ta  Ta1  1  0.200  0.243  0.242  1.0
  Ta  Ta2  1  0.758  0.986  0.228  1.0
  Ta  Ta3  1  0.762  0.729  0.763  1.0
  Zn  Zn4  1  0.222  0.853  0.420  1.0
  Zn  Zn5  1  0.260  0.445  0.564  1.0
  Zn  Zn6  1  0.767  0.136  0.550  1.0
  Zn  Zn7  1  0.709  0.567  0.423  1.0
  W  W8  1  0.267  0.642  0.001  1.0
  W  W9  1  0.758  0.345  0.003  1.0
  O  O10  1  0.938  0.045  0.860  1.0
  O  O11  1  0.566  0.176  0.138  1.0
  O  O12  1  0.087  0.919  0.130  1.0
  O  O13  1  0.439  0.815  0.858  1.0
  O  O14  1  0.414  0.311  0.881  1.0
  O  O15  1  0.105  0.426  0.120  1.0
  O  O16  1  0.611  0.674  0.114  1.0
  O  O17  1  0.912  0.566  0.880  1.0
  O  O18  1  0.574  0.941  0.652  1.0
  O  O19  1  0.913  0.290  0.377  1.0
  O  O20  1  0.633  0.463  0.620  1.0
  O  O21  1  0.853  0.851  0.390  1.0
  O  O22  1  0.346  0.541  0.394  1.0
  O  O23  1  0.137  0.169  0.618  1.0
  O  O24  1  0.073  0.731  0.655  1.0
  O  O25  1  0.421  0.073  0.353  1.0
[/CIF]
.
The material structure described by Ta2WZn2O8 crystallizes in the triclinic P1 space group. There are four inequivalent Ta sites. In the first Ta site, Ta(1) is bonded to one O(1), one O(14), one O(15), one O(4), one O(5), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra, and edges with two equivalent Ta(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-53°. In the second Ta site, Ta(2) is bonded to one O(10), one O(13), one O(16), one O(2), one O(3), and one O(6) atom to form distorted TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra,  a cornercorner with one Zn(2)O4 tetrahedra, corners with two equivalent Zn(4)O4 trigonal pyramids, and edges with two equivalent Ta(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-60°. In the third Ta site, Ta(3) is bonded to one O(10), one O(12), one O(16), one O(2), one O(3), and one O(7) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(4)O4 trigonal pyramids, and edges with two equivalent Ta(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-61°. In the fourth Ta site, Ta(4) is bonded to one O(1), one O(11), one O(15), one O(4), one O(8), and one O(9) atom to form TaO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent Zn(2)O4 tetrahedra,  a cornercorner with one Zn(4)O4 trigonal pyramid, and edges with two equivalent Ta(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-54°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-57°. In the second W site, W(2) is bonded to one O(1), one O(2), one O(5), one O(6), one O(7), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-61°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 4-coordinate geometry to one O(12), one O(13), one O(14), and one O(16) atom. In the second Zn site, Zn(2) is bonded to one O(11), one O(13), one O(14), and one O(15) atom to form distorted ZnO4 tetrahedra that share  a cornercorner with one Ta(2)O6 octahedra, corners with two equivalent Ta(1)O6 octahedra, corners with two equivalent Ta(4)O6 octahedra, and  an edgeedge with one Zn(4)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 51-80°. In the third Zn site, Zn(3) is bonded in a 5-coordinate geometry to one O(10), one O(11), one O(12), one O(14), and one O(9) atom. In the fourth Zn site, Zn(4) is bonded to one O(10), one O(11), one O(12), and one O(13) atom to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Ta(4)O6 octahedra, corners with two equivalent Ta(2)O6 octahedra, corners with two equivalent Ta(3)O6 octahedra, and  an edgeedge with one Zn(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 55-76°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Ta(1), one Ta(4), and one W(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Ta(2), one Ta(3), and one W(2) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Ta(2), one Ta(3), and one W(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one W(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ta(1), one W(1), and one W(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Ta(2), one W(1), and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Ta(3), one W(1), and one W(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Ta(4), one W(1), and one W(2) atom. In the ninth O site, O(9) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(3) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ta(2), one Ta(3), one Zn(3), and one Zn(4) atom. In the eleventh O site, O(11) is bonded to one Ta(4), one Zn(2), one Zn(3), and one Zn(4) atom to form a mixture of distorted corner and edge-sharing OTaZn3 trigonal pyramids. In the twelfth O site, O(12) is bonded to one Ta(3), one Zn(1), one Zn(3), and one Zn(4) atom to form a mixture of corner and edge-sharing OTaZn3 tetrahedra. In the thirteenth O site, O(13) is bonded to one Ta(2), one Zn(1), one Zn(2), and one Zn(4) atom to form a mixture of corner and edge-sharing OTaZn3 tetrahedra. In the fourteenth O site, O(14) is bonded to one Ta(1), one Zn(1), one Zn(2), and one Zn(3) atom to form a mixture of distorted corner and edge-sharing OTaZn3 trigonal pyramids. In the fifteenth O site, O(15) is bonded in a trigonal planar geometry to one Ta(1), one Ta(4), and one Zn(2) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal non-coplanar geometry to one Ta(2), one Ta(3), and one Zn(1) atom. is represented by the CIF file [CIF]
data_Ta2Zn2WO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.344
_cell_length_b   5.983
_cell_length_c   10.260
_cell_angle_alpha   105.035
_cell_angle_beta   90.733
_cell_angle_gamma   91.188
_symmetry_Int_Tables_number   1
_cell_volume   316.737
_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
  Ta  Ta0  1  0.265  0.040  0.762  1.0
  Ta  Ta1  1  0.200  0.243  0.242  1.0
  Ta  Ta2  1  0.758  0.986  0.228  1.0
  Ta  Ta3  1  0.762  0.729  0.763  1.0
  Zn  Zn4  1  0.222  0.853  0.420  1.0
  Zn  Zn5  1  0.260  0.445  0.564  1.0
  Zn  Zn6  1  0.767  0.136  0.550  1.0
  Zn  Zn7  1  0.709  0.567  0.423  1.0
  W  W8  1  0.267  0.642  0.001  1.0
  W  W9  1  0.758  0.345  0.003  1.0
  O  O10  1  0.938  0.045  0.860  1.0
  O  O11  1  0.566  0.176  0.138  1.0
  O  O12  1  0.087  0.919  0.130  1.0
  O  O13  1  0.439  0.815  0.858  1.0
  O  O14  1  0.414  0.311  0.881  1.0
  O  O15  1  0.105  0.426  0.120  1.0
  O  O16  1  0.611  0.674  0.114  1.0
  O  O17  1  0.912  0.566  0.880  1.0
  O  O18  1  0.574  0.941  0.652  1.0
  O  O19  1  0.913  0.290  0.377  1.0
  O  O20  1  0.633  0.463  0.620  1.0
  O  O21  1  0.853  0.851  0.390  1.0
  O  O22  1  0.346  0.541  0.394  1.0
  O  O23  1  0.137  0.169  0.618  1.0
  O  O24  1  0.073  0.731  0.655  1.0
  O  O25  1  0.421  0.073  0.353  1.0
[/CIF]
.