The structure described by Ca2YAs(WO6)2 crystallizes in the tetragonal I4_1/a space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Y(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 tetrahedra that share corners with two equivalent As(1)O4 tetrahedra. As(1) is bonded to four equivalent O(1) atoms to form AsO4 tetrahedra that share corners with four equivalent W(1)O6 tetrahedra. There are three inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar geometry to one Ca(1), one Y(1), and one W(1) atom. In the second O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one W(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ca(1), one Y(1), one W(1), and one As(1) atom. is represented by the CIF file [CIF]
data_Ca2YAs(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   17.677
_cell_length_b   17.677
_cell_length_c   17.677
_cell_angle_alpha   163.055
_cell_angle_beta   163.055
_cell_angle_gamma   24.053
_symmetry_Int_Tables_number   1
_cell_volume   469.100
_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
  Ca  Ca0  1  0.914  0.414  0.500  1.0
  Ca  Ca1  1  0.164  0.164  0.000  1.0
  Ca  Ca2  1  0.836  0.836  0.000  1.0
  Ca  Ca3  1  0.586  0.086  0.500  1.0
  Y  Y4  1  0.500  0.500  0.000  1.0
  Y  Y5  1  0.250  0.750  0.500  1.0
  As  As6  1  0.750  0.250  0.500  1.0
  As  As7  1  0.000  0.000  0.000  1.0
  W  W8  1  0.075  0.575  0.500  1.0
  W  W9  1  0.675  0.675  0.000  1.0
  W  W10  1  0.425  0.925  0.500  1.0
  W  W11  1  0.325  0.325  0.000  1.0
  O  O12  1  0.530  0.019  0.103  1.0
  O  O13  1  0.177  0.780  0.011  1.0
  O  O14  1  0.769  0.166  0.989  1.0
  O  O15  1  0.916  0.427  0.897  1.0
  O  O16  1  0.220  0.231  0.397  1.0
  O  O17  1  0.573  0.470  0.489  1.0
  O  O18  1  0.981  0.084  0.511  1.0
  O  O19  1  0.834  0.823  0.603  1.0
  O  O20  1  0.982  0.864  0.454  1.0
  O  O21  1  0.279  0.232  0.619  1.0
  O  O22  1  0.614  0.660  0.381  1.0
  O  O23  1  0.410  0.529  0.546  1.0
  O  O24  1  0.974  0.848  0.608  1.0
  O  O25  1  0.116  0.224  0.626  1.0
  O  O26  1  0.598  0.490  0.374  1.0
  O  O27  1  0.240  0.366  0.392  1.0
  O  O28  1  0.776  0.402  0.892  1.0
  O  O29  1  0.634  0.026  0.874  1.0
  O  O30  1  0.152  0.760  0.126  1.0
  O  O31  1  0.510  0.884  0.108  1.0
  O  O32  1  0.340  0.721  0.954  1.0
  O  O33  1  0.136  0.590  0.119  1.0
  O  O34  1  0.471  0.018  0.881  1.0
  O  O35  1  0.768  0.386  0.046  1.0
[/CIF]
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The structure described by Ca2YAs(WO6)2 crystallizes in the tetragonal I4_1/a space group. Ca(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Y(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted WO6 tetrahedra that share corners with two equivalent As(1)O4 tetrahedra. As(1) is bonded to four equivalent O(1) atoms to form AsO4 tetrahedra that share corners with four equivalent W(1)O6 tetrahedra. There are three inequivalent O sites. In the first O site, O(2) is bonded in a trigonal planar geometry to one Ca(1), one Y(1), and one W(1) atom. In the second O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Ca(1) and one W(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Ca(1), one Y(1), one W(1), and one As(1) atom. is represented by the CIF file [CIF]
data_Ca2YAs(WO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   17.677
_cell_length_b   17.677
_cell_length_c   17.677
_cell_angle_alpha   163.055
_cell_angle_beta   163.055
_cell_angle_gamma   24.053
_symmetry_Int_Tables_number   1
_cell_volume   469.100
_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
  Ca  Ca0  1  0.914  0.414  0.500  1.0
  Ca  Ca1  1  0.164  0.164  0.000  1.0
  Ca  Ca2  1  0.836  0.836  0.000  1.0
  Ca  Ca3  1  0.586  0.086  0.500  1.0
  Y  Y4  1  0.500  0.500  0.000  1.0
  Y  Y5  1  0.250  0.750  0.500  1.0
  As  As6  1  0.750  0.250  0.500  1.0
  As  As7  1  0.000  0.000  0.000  1.0
  W  W8  1  0.075  0.575  0.500  1.0
  W  W9  1  0.675  0.675  0.000  1.0
  W  W10  1  0.425  0.925  0.500  1.0
  W  W11  1  0.325  0.325  0.000  1.0
  O  O12  1  0.530  0.019  0.103  1.0
  O  O13  1  0.177  0.780  0.011  1.0
  O  O14  1  0.769  0.166  0.989  1.0
  O  O15  1  0.916  0.427  0.897  1.0
  O  O16  1  0.220  0.231  0.397  1.0
  O  O17  1  0.573  0.470  0.489  1.0
  O  O18  1  0.981  0.084  0.511  1.0
  O  O19  1  0.834  0.823  0.603  1.0
  O  O20  1  0.982  0.864  0.454  1.0
  O  O21  1  0.279  0.232  0.619  1.0
  O  O22  1  0.614  0.660  0.381  1.0
  O  O23  1  0.410  0.529  0.546  1.0
  O  O24  1  0.974  0.848  0.608  1.0
  O  O25  1  0.116  0.224  0.626  1.0
  O  O26  1  0.598  0.490  0.374  1.0
  O  O27  1  0.240  0.366  0.392  1.0
  O  O28  1  0.776  0.402  0.892  1.0
  O  O29  1  0.634  0.026  0.874  1.0
  O  O30  1  0.152  0.760  0.126  1.0
  O  O31  1  0.510  0.884  0.108  1.0
  O  O32  1  0.340  0.721  0.954  1.0
  O  O33  1  0.136  0.590  0.119  1.0
  O  O34  1  0.471  0.018  0.881  1.0
  O  O35  1  0.768  0.386  0.046  1.0
[/CIF]
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