The structure described by CrAl(WO4)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(12), one O(15), one O(16), one O(2), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. In the second W site, W(2) is bonded to one O(13), one O(14), one O(3), one O(6), one O(8), and one O(9) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-58°. In the third W site, W(3) is bonded to one O(1), one O(11), one O(13), one O(14), one O(6), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-58°. In the fourth W site, W(4) is bonded to one O(10), one O(15), one O(16), one O(4), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the second Cr site, Cr(2) is bonded to one O(1), one O(10), one O(2), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(10), one O(13), one O(15), one O(2), and one O(9) atom to form AlO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(14), one O(16), one O(3), and one O(4) atom to form AlO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(3), one Cr(2), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one Cr(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one W(2), one Cr(1), and one Al(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one W(4), one Cr(1), and one Al(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one W(1), one W(4), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one W(2), one W(3), and one Cr(1) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one W(1), one W(4), and one Cr(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one W(2), one W(3), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one W(2), one Cr(2), and one Al(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one W(4), one Cr(2), and one Al(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(3), one Cr(1), and one Al(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one W(1), one Cr(1), and one Al(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one W(2), one W(3), and one Al(1) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one W(2), one W(3), and one Al(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one W(1), one W(4), and one Al(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one W(1), one W(4), and one Al(2) atom. is represented by the CIF file [CIF]
data_AlCr(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.101
_cell_length_b   5.547
_cell_length_c   9.174
_cell_angle_alpha   89.969
_cell_angle_beta   90.525
_cell_angle_gamma   89.944
_symmetry_Int_Tables_number   1
_cell_volume   259.608
_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
  Al  Al0  1  0.250  0.652  0.250  1.0
  Al  Al1  1  0.750  0.348  0.749  1.0
  Cr  Cr2  1  0.250  0.638  0.751  1.0
  Cr  Cr3  1  0.750  0.361  0.249  1.0
  W  W4  1  0.246  0.163  0.501  1.0
  W  W5  1  0.747  0.837  0.001  1.0
  W  W6  1  0.253  0.163  0.999  1.0
  W  W7  1  0.752  0.836  0.499  1.0
  O  O8  1  0.407  0.383  0.136  1.0
  O  O9  1  0.095  0.382  0.364  1.0
  O  O10  1  0.593  0.618  0.864  1.0
  O  O11  1  0.906  0.617  0.637  1.0
  O  O12  1  0.409  0.882  0.612  1.0
  O  O13  1  0.089  0.884  0.888  1.0
  O  O14  1  0.590  0.118  0.388  1.0
  O  O15  1  0.911  0.116  0.112  1.0
  O  O16  1  0.933  0.621  0.140  1.0
  O  O17  1  0.568  0.622  0.360  1.0
  O  O18  1  0.067  0.378  0.860  1.0
  O  O19  1  0.432  0.380  0.639  1.0
  O  O20  1  0.415  0.875  0.119  1.0
  O  O21  1  0.585  0.127  0.881  1.0
  O  O22  1  0.084  0.873  0.381  1.0
  O  O23  1  0.915  0.125  0.619  1.0
[/CIF]
.
The structure described by CrAl(WO4)2 is Hydrophilite-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent W sites. In the first W site, W(1) is bonded to one O(12), one O(15), one O(16), one O(2), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. In the second W site, W(2) is bonded to one O(13), one O(14), one O(3), one O(6), one O(8), and one O(9) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-58°. In the third W site, W(3) is bonded to one O(1), one O(11), one O(13), one O(14), one O(6), and one O(8) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-58°. In the fourth W site, W(4) is bonded to one O(10), one O(15), one O(16), one O(4), one O(5), and one O(7) atom to form WO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with two equivalent Cr(2)O6 octahedra, corners with two equivalent Al(1)O6 octahedra, corners with two equivalent Al(2)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-57°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(11), one O(12), one O(3), one O(4), one O(5), and one O(6) atom to form CrO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Al(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. In the second Cr site, Cr(2) is bonded to one O(1), one O(10), one O(2), one O(7), one O(8), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-58°. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(10), one O(13), one O(15), one O(2), and one O(9) atom to form AlO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 47-50°. In the second Al site, Al(2) is bonded to one O(11), one O(12), one O(14), one O(16), one O(3), and one O(4) atom to form AlO6 octahedra that share corners with two equivalent W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with two equivalent W(3)O6 octahedra, corners with two equivalent W(4)O6 octahedra, and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-50°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(3), one Cr(2), and one Al(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one W(1), one Cr(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one W(2), one Cr(1), and one Al(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one W(4), one Cr(1), and one Al(2) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one W(1), one W(4), and one Cr(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one W(2), one W(3), and one Cr(1) atom. In the seventh O site, O(7) is bonded in a trigonal planar geometry to one W(1), one W(4), and one Cr(2) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one W(2), one W(3), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one W(2), one Cr(2), and one Al(1) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one W(4), one Cr(2), and one Al(1) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one W(3), one Cr(1), and one Al(2) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one W(1), one Cr(1), and one Al(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one W(2), one W(3), and one Al(1) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one W(2), one W(3), and one Al(2) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one W(1), one W(4), and one Al(1) atom. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one W(1), one W(4), and one Al(2) atom. is represented by the CIF file [CIF]
data_AlCr(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.101
_cell_length_b   5.547
_cell_length_c   9.174
_cell_angle_alpha   89.969
_cell_angle_beta   90.525
_cell_angle_gamma   89.944
_symmetry_Int_Tables_number   1
_cell_volume   259.608
_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
  Al  Al0  1  0.250  0.652  0.250  1.0
  Al  Al1  1  0.750  0.348  0.749  1.0
  Cr  Cr2  1  0.250  0.638  0.751  1.0
  Cr  Cr3  1  0.750  0.361  0.249  1.0
  W  W4  1  0.246  0.163  0.501  1.0
  W  W5  1  0.747  0.837  0.001  1.0
  W  W6  1  0.253  0.163  0.999  1.0
  W  W7  1  0.752  0.836  0.499  1.0
  O  O8  1  0.407  0.383  0.136  1.0
  O  O9  1  0.095  0.382  0.364  1.0
  O  O10  1  0.593  0.618  0.864  1.0
  O  O11  1  0.906  0.617  0.637  1.0
  O  O12  1  0.409  0.882  0.612  1.0
  O  O13  1  0.089  0.884  0.888  1.0
  O  O14  1  0.590  0.118  0.388  1.0
  O  O15  1  0.911  0.116  0.112  1.0
  O  O16  1  0.933  0.621  0.140  1.0
  O  O17  1  0.568  0.622  0.360  1.0
  O  O18  1  0.067  0.378  0.860  1.0
  O  O19  1  0.432  0.380  0.639  1.0
  O  O20  1  0.415  0.875  0.119  1.0
  O  O21  1  0.585  0.127  0.881  1.0
  O  O22  1  0.084  0.873  0.381  1.0
  O  O23  1  0.915  0.125  0.619  1.0
[/CIF]
.