The structure described by YFe(WO4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) 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 YO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra, corners with three equivalent W(1)O6 octahedra, and corners with three equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. In the second Y site, Y(2) 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 YO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, corners with three equivalent W(2)O6 octahedra, and corners with three equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-58°. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(14), one O(15), one O(2), one O(3), one O(6), and one O(7) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(2)O6 octahedra, corners with three equivalent Y(1)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the second W site, W(2) is bonded to one O(1), one O(13), one O(16), one O(4), one O(5), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(1)O6 octahedra, corners with three equivalent Y(2)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the third W site, W(3) is bonded to one O(10), one O(12), one O(14), one O(16), one O(6), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(2)O6 octahedra, corners with three equivalent Y(1)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-55°. In the fourth W site, W(4) is bonded to one O(11), one O(13), one O(15), one O(5), one O(7), and one O(9) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(1)O6 octahedra, corners with three equivalent Y(2)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-55°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to one O(13), one O(15), one O(3), and one O(6) atom. In the second Fe site, Fe(2) is bonded in a 4-coordinate geometry to one O(14), one O(16), one O(4), and one O(5) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Y(2) and one W(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Y(1) and one W(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Y(2), one W(2), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one W(2), one W(4), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(3), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(2), one W(2), and one W(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Y(2) and one W(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Y(1) and one W(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Y(2) and one W(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Y(1) and one W(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one W(2), one W(4), and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one W(1), one W(3), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal pyramidal geometry to one Y(2), one W(1), one W(4), and one Fe(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal pyramidal geometry to one Y(1), one W(2), one W(3), and one Fe(2) atom. is represented by the CIF file [CIF]
data_YFe(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.181
_cell_length_b   5.960
_cell_length_c   6.019
_cell_angle_alpha   70.829
_cell_angle_beta   89.827
_cell_angle_gamma   67.777
_symmetry_Int_Tables_number   1
_cell_volume   160.959
_cell_formula_units_Z   1
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
  Fe  Fe0  1  0.032  0.124  0.712  1.0
  O  O1  1  0.292  0.835  0.339  1.0
  O  O2  1  0.265  0.311  0.515  1.0
  O  O3  1  0.375  0.790  0.815  1.0
  O  O4  1  0.175  0.401  0.949  1.0
  O  O5  1  0.778  0.857  0.063  1.0
  O  O6  1  0.745  0.371  0.215  1.0
  O  O7  1  0.693  0.387  0.755  1.0
  O  O8  1  0.860  0.819  0.614  1.0
  W  W9  1  0.289  0.589  0.614  1.0
  W  W10  1  0.775  0.612  0.947  1.0
  Y  Y11  1  0.521  0.101  0.285  1.0
[/CIF]
.
The structure described by YFe(WO4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Y sites. In the first Y site, Y(1) 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 YO6 octahedra that share  a cornercorner with one W(2)O6 octahedra,  a cornercorner with one W(4)O6 octahedra, corners with three equivalent W(1)O6 octahedra, and corners with three equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-58°. In the second Y site, Y(2) 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 YO6 octahedra that share  a cornercorner with one W(1)O6 octahedra,  a cornercorner with one W(3)O6 octahedra, corners with three equivalent W(2)O6 octahedra, and corners with three equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-58°. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(14), one O(15), one O(2), one O(3), one O(6), and one O(7) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(2)O6 octahedra, corners with three equivalent Y(1)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the second W site, W(2) is bonded to one O(1), one O(13), one O(16), one O(4), one O(5), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(1)O6 octahedra, corners with three equivalent Y(2)O6 octahedra,  an edgeedge with one W(3)O6 octahedra, and  an edgeedge with one W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the third W site, W(3) is bonded to one O(10), one O(12), one O(14), one O(16), one O(6), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(2)O6 octahedra, corners with three equivalent Y(1)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-55°. In the fourth W site, W(4) is bonded to one O(11), one O(13), one O(15), one O(5), one O(7), and one O(9) atom to form distorted WO6 octahedra that share  a cornercorner with one Y(1)O6 octahedra, corners with three equivalent Y(2)O6 octahedra,  an edgeedge with one W(1)O6 octahedra, and  an edgeedge with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-55°. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 4-coordinate geometry to one O(13), one O(15), one O(3), and one O(6) atom. In the second Fe site, Fe(2) is bonded in a 4-coordinate geometry to one O(14), one O(16), one O(4), and one O(5) atom. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Y(2) and one W(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Y(1) and one W(1) atom. In the third O site, O(3) is bonded in a trigonal planar geometry to one Y(1), one W(1), and one Fe(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Y(2), one W(2), and one Fe(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one W(2), one W(4), and one Fe(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(3), and one Fe(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Y(1), one W(1), and one W(4) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Y(2), one W(2), and one W(3) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Y(2) and one W(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 150 degrees geometry to one Y(1) and one W(3) atom. In the eleventh O site, O(11) is bonded in a distorted bent 120 degrees geometry to one Y(2) and one W(4) atom. In the twelfth O site, O(12) is bonded in a distorted bent 120 degrees geometry to one Y(1) and one W(3) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one W(2), one W(4), and one Fe(1) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one W(1), one W(3), and one Fe(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal pyramidal geometry to one Y(2), one W(1), one W(4), and one Fe(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal pyramidal geometry to one Y(1), one W(2), one W(3), and one Fe(2) atom. is represented by the CIF file [CIF]
data_YFe(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.181
_cell_length_b   5.960
_cell_length_c   6.019
_cell_angle_alpha   70.829
_cell_angle_beta   89.827
_cell_angle_gamma   67.777
_symmetry_Int_Tables_number   1
_cell_volume   160.959
_cell_formula_units_Z   1
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
  Fe  Fe0  1  0.032  0.124  0.712  1.0
  O  O1  1  0.292  0.835  0.339  1.0
  O  O2  1  0.265  0.311  0.515  1.0
  O  O3  1  0.375  0.790  0.815  1.0
  O  O4  1  0.175  0.401  0.949  1.0
  O  O5  1  0.778  0.857  0.063  1.0
  O  O6  1  0.745  0.371  0.215  1.0
  O  O7  1  0.693  0.387  0.755  1.0
  O  O8  1  0.860  0.819  0.614  1.0
  W  W9  1  0.289  0.589  0.614  1.0
  W  W10  1  0.775  0.612  0.947  1.0
  Y  Y11  1  0.521  0.101  0.285  1.0
[/CIF]
.