The material structure described by CuWO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(7), and two equivalent O(4) atoms. In the second W site, W(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form WO4 tetrahedra that share corners with two equivalent Cu(2)O5 trigonal bipyramids. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(5), and one O(7) atom. In the second Cu site, Cu(2) is bonded to one O(4), one O(6), one O(8), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share corners with two equivalent W(2)O4 tetrahedra and  an edgeedge with one Cu(2)O5 trigonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one W(1) and two equivalent Cu(2) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent W(1) and one Cu(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one W(1) and one Cu(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one W(2) and one Cu(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CuWO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.034
_cell_length_b   6.820
_cell_length_c   12.128
_cell_angle_alpha   89.507
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   747.196
_cell_formula_units_Z   8
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
  Cu  Cu0  1  0.114  0.821  0.892  1.0
  Cu  Cu1  1  0.041  0.374  0.609  1.0
  Cu  Cu2  1  0.959  0.626  0.391  1.0
  Cu  Cu3  1  0.886  0.179  0.108  1.0
  Cu  Cu4  1  0.386  0.821  0.392  1.0
  Cu  Cu5  1  0.459  0.374  0.109  1.0
  Cu  Cu6  1  0.614  0.179  0.608  1.0
  Cu  Cu7  1  0.541  0.626  0.891  1.0
  W  W8  1  0.442  0.105  0.877  1.0
  W  W9  1  0.058  0.105  0.377  1.0
  W  W10  1  0.102  0.592  0.138  1.0
  W  W11  1  0.942  0.895  0.623  1.0
  W  W12  1  0.898  0.408  0.862  1.0
  W  W13  1  0.602  0.408  0.362  1.0
  W  W14  1  0.398  0.592  0.638  1.0
  W  W15  1  0.558  0.895  0.123  1.0
  O  O16  1  0.254  0.050  0.376  1.0
  O  O17  1  0.990  0.643  0.582  1.0
  O  O18  1  0.634  0.196  0.451  1.0
  O  O19  1  0.134  0.804  0.049  1.0
  O  O20  1  0.246  0.050  0.876  1.0
  O  O21  1  0.746  0.950  0.624  1.0
  O  O22  1  0.066  0.099  0.570  1.0
  O  O23  1  0.927  0.464  0.113  1.0
  O  O24  1  0.573  0.464  0.613  1.0
  O  O25  1  0.890  0.318  0.720  1.0
  O  O26  1  0.390  0.682  0.780  1.0
  O  O27  1  0.073  0.536  0.887  1.0
  O  O28  1  0.934  0.901  0.430  1.0
  O  O29  1  0.506  0.882  0.266  1.0
  O  O30  1  0.254  0.416  0.620  1.0
  O  O31  1  0.246  0.416  0.120  1.0
  O  O32  1  0.006  0.118  0.234  1.0
  O  O33  1  0.427  0.536  0.387  1.0
  O  O34  1  0.494  0.118  0.734  1.0
  O  O35  1  0.366  0.804  0.549  1.0
  O  O36  1  0.510  0.643  0.082  1.0
  O  O37  1  0.110  0.682  0.280  1.0
  O  O38  1  0.754  0.950  0.124  1.0
  O  O39  1  0.434  0.099  0.070  1.0
  O  O40  1  0.866  0.196  0.951  1.0
  O  O41  1  0.754  0.584  0.880  1.0
  O  O42  1  0.010  0.357  0.418  1.0
  O  O43  1  0.490  0.357  0.918  1.0
  O  O44  1  0.566  0.901  0.930  1.0
  O  O45  1  0.746  0.584  0.380  1.0
  O  O46  1  0.610  0.318  0.220  1.0
  O  O47  1  0.994  0.882  0.766  1.0
[/CIF]
.
The material structure described by CuWO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(7), and two equivalent O(4) atoms. In the second W site, W(2) is bonded to one O(3), one O(5), one O(6), and one O(8) atom to form WO4 tetrahedra that share corners with two equivalent Cu(2)O5 trigonal bipyramids. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a distorted rectangular see-saw-like geometry to one O(1), one O(3), one O(5), and one O(7) atom. In the second Cu site, Cu(2) is bonded to one O(4), one O(6), one O(8), and two equivalent O(2) atoms to form distorted CuO5 trigonal bipyramids that share corners with two equivalent W(2)O4 tetrahedra and  an edgeedge with one Cu(2)O5 trigonal bipyramid. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one Cu(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one W(1) and two equivalent Cu(2) atoms. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to two equivalent W(1) and one Cu(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one W(2) and one Cu(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one W(1) and one Cu(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one W(2) and one Cu(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_CuWO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.034
_cell_length_b   6.820
_cell_length_c   12.128
_cell_angle_alpha   89.507
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   747.196
_cell_formula_units_Z   8
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
  Cu  Cu0  1  0.114  0.821  0.892  1.0
  Cu  Cu1  1  0.041  0.374  0.609  1.0
  Cu  Cu2  1  0.959  0.626  0.391  1.0
  Cu  Cu3  1  0.886  0.179  0.108  1.0
  Cu  Cu4  1  0.386  0.821  0.392  1.0
  Cu  Cu5  1  0.459  0.374  0.109  1.0
  Cu  Cu6  1  0.614  0.179  0.608  1.0
  Cu  Cu7  1  0.541  0.626  0.891  1.0
  W  W8  1  0.442  0.105  0.877  1.0
  W  W9  1  0.058  0.105  0.377  1.0
  W  W10  1  0.102  0.592  0.138  1.0
  W  W11  1  0.942  0.895  0.623  1.0
  W  W12  1  0.898  0.408  0.862  1.0
  W  W13  1  0.602  0.408  0.362  1.0
  W  W14  1  0.398  0.592  0.638  1.0
  W  W15  1  0.558  0.895  0.123  1.0
  O  O16  1  0.254  0.050  0.376  1.0
  O  O17  1  0.990  0.643  0.582  1.0
  O  O18  1  0.634  0.196  0.451  1.0
  O  O19  1  0.134  0.804  0.049  1.0
  O  O20  1  0.246  0.050  0.876  1.0
  O  O21  1  0.746  0.950  0.624  1.0
  O  O22  1  0.066  0.099  0.570  1.0
  O  O23  1  0.927  0.464  0.113  1.0
  O  O24  1  0.573  0.464  0.613  1.0
  O  O25  1  0.890  0.318  0.720  1.0
  O  O26  1  0.390  0.682  0.780  1.0
  O  O27  1  0.073  0.536  0.887  1.0
  O  O28  1  0.934  0.901  0.430  1.0
  O  O29  1  0.506  0.882  0.266  1.0
  O  O30  1  0.254  0.416  0.620  1.0
  O  O31  1  0.246  0.416  0.120  1.0
  O  O32  1  0.006  0.118  0.234  1.0
  O  O33  1  0.427  0.536  0.387  1.0
  O  O34  1  0.494  0.118  0.734  1.0
  O  O35  1  0.366  0.804  0.549  1.0
  O  O36  1  0.510  0.643  0.082  1.0
  O  O37  1  0.110  0.682  0.280  1.0
  O  O38  1  0.754  0.950  0.124  1.0
  O  O39  1  0.434  0.099  0.070  1.0
  O  O40  1  0.866  0.196  0.951  1.0
  O  O41  1  0.754  0.584  0.880  1.0
  O  O42  1  0.010  0.357  0.418  1.0
  O  O43  1  0.490  0.357  0.918  1.0
  O  O44  1  0.566  0.901  0.930  1.0
  O  O45  1  0.746  0.584  0.380  1.0
  O  O46  1  0.610  0.318  0.220  1.0
  O  O47  1  0.994  0.882  0.766  1.0
[/CIF]
.