The compound described by CsYb(WO4)2 crystallizes in the monoclinic P2/c space group. Cs(1) is bonded to two equivalent O(1), four equivalent O(4), and six equivalent O(2) atoms to form distorted CsO12 cuboctahedra that share corners with four equivalent W(1)O6 octahedra, edges with four equivalent Cs(1)O12 cuboctahedra, edges with two equivalent W(1)O6 octahedra, faces with two equivalent Cs(1)O12 cuboctahedra, and faces with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-47°. Yb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. W(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted WO6 octahedra that share corners with two equivalent Cs(1)O12 cuboctahedra, corners with two equivalent W(1)O6 octahedra,  an edgeedge with one Cs(1)O12 cuboctahedra,  an edgeedge with one W(1)O6 octahedra, and  a faceface with one Cs(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 43°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one Yb(1), and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one W(1) atom. In the third O site, O(3) is bonded to two equivalent Yb(1) and two equivalent W(1) atoms to form a mixture of distorted corner and edge-sharing OYb2W2 tetrahedra. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one Yb(1), and one W(1) atom. is represented by the CIF file [CIF]
data_CsYb(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.344
_cell_length_b   7.447
_cell_length_c   9.450
_cell_angle_alpha   84.514
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   374.390
_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
  Cs  Cs0  1  0.407  0.750  0.500  1.0
  Cs  Cs1  1  0.593  0.250  0.500  1.0
  Yb  Yb2  1  0.471  0.750  0.000  1.0
  Yb  Yb3  1  0.529  0.250  0.000  1.0
  W  W4  1  0.978  0.511  0.181  1.0
  W  W5  1  0.022  0.489  0.819  1.0
  W  W6  1  0.978  0.989  0.819  1.0
  W  W7  1  0.022  0.011  0.181  1.0
  O  O8  1  0.866  0.256  0.167  1.0
  O  O9  1  0.134  0.744  0.833  1.0
  O  O10  1  0.866  0.244  0.833  1.0
  O  O11  1  0.134  0.756  0.167  1.0
  O  O12  1  0.890  0.949  0.353  1.0
  O  O13  1  0.110  0.051  0.647  1.0
  O  O14  1  0.890  0.551  0.647  1.0
  O  O15  1  0.110  0.449  0.353  1.0
  O  O16  1  0.771  0.971  0.035  1.0
  O  O17  1  0.229  0.029  0.965  1.0
  O  O18  1  0.771  0.529  0.965  1.0
  O  O19  1  0.229  0.471  0.035  1.0
  O  O20  1  0.666  0.601  0.217  1.0
  O  O21  1  0.334  0.399  0.783  1.0
  O  O22  1  0.666  0.899  0.783  1.0
  O  O23  1  0.334  0.101  0.217  1.0
[/CIF]
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The compound described by CsYb(WO4)2 crystallizes in the monoclinic P2/c space group. Cs(1) is bonded to two equivalent O(1), four equivalent O(4), and six equivalent O(2) atoms to form distorted CsO12 cuboctahedra that share corners with four equivalent W(1)O6 octahedra, edges with four equivalent Cs(1)O12 cuboctahedra, edges with two equivalent W(1)O6 octahedra, faces with two equivalent Cs(1)O12 cuboctahedra, and faces with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-47°. Yb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. W(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted WO6 octahedra that share corners with two equivalent Cs(1)O12 cuboctahedra, corners with two equivalent W(1)O6 octahedra,  an edgeedge with one Cs(1)O12 cuboctahedra,  an edgeedge with one W(1)O6 octahedra, and  a faceface with one Cs(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 43°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Cs(1), one Yb(1), and two equivalent W(1) atoms. In the second O site, O(2) is bonded in a distorted single-bond geometry to three equivalent Cs(1) and one W(1) atom. In the third O site, O(3) is bonded to two equivalent Yb(1) and two equivalent W(1) atoms to form a mixture of distorted corner and edge-sharing OYb2W2 tetrahedra. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Cs(1), one Yb(1), and one W(1) atom. is represented by the CIF file [CIF]
data_CsYb(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.344
_cell_length_b   7.447
_cell_length_c   9.450
_cell_angle_alpha   84.514
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   374.390
_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
  Cs  Cs0  1  0.407  0.750  0.500  1.0
  Cs  Cs1  1  0.593  0.250  0.500  1.0
  Yb  Yb2  1  0.471  0.750  0.000  1.0
  Yb  Yb3  1  0.529  0.250  0.000  1.0
  W  W4  1  0.978  0.511  0.181  1.0
  W  W5  1  0.022  0.489  0.819  1.0
  W  W6  1  0.978  0.989  0.819  1.0
  W  W7  1  0.022  0.011  0.181  1.0
  O  O8  1  0.866  0.256  0.167  1.0
  O  O9  1  0.134  0.744  0.833  1.0
  O  O10  1  0.866  0.244  0.833  1.0
  O  O11  1  0.134  0.756  0.167  1.0
  O  O12  1  0.890  0.949  0.353  1.0
  O  O13  1  0.110  0.051  0.647  1.0
  O  O14  1  0.890  0.551  0.647  1.0
  O  O15  1  0.110  0.449  0.353  1.0
  O  O16  1  0.771  0.971  0.035  1.0
  O  O17  1  0.229  0.029  0.965  1.0
  O  O18  1  0.771  0.529  0.965  1.0
  O  O19  1  0.229  0.471  0.035  1.0
  O  O20  1  0.666  0.601  0.217  1.0
  O  O21  1  0.334  0.399  0.783  1.0
  O  O22  1  0.666  0.899  0.783  1.0
  O  O23  1  0.334  0.101  0.217  1.0
[/CIF]
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