The material structure described by Sr2YW2AlO7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. Y(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. W(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. Al(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form corner-sharing AlO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Al(1) atom. In the second O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Al(1) atoms to form distorted OSr2Al2 tetrahedra that share corners with two equivalent O(1)Sr2Al2 tetrahedra and corners with two equivalent O(3)SrYW2 trigonal pyramids. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), and two equivalent W(1) atoms. In the fourth O site, O(3) is bonded to one Sr(1), one Y(1), and two equivalent W(1) atoms to form distorted OSrYW2 trigonal pyramids that share  a cornercorner with one O(1)Sr2Al2 tetrahedra and corners with three equivalent O(3)SrYW2 trigonal pyramids. is represented by the CIF file [CIF]
data_Sr2YAlW2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.231
_cell_length_b   12.231
_cell_length_c   12.231
_cell_angle_alpha   153.399
_cell_angle_beta   152.484
_cell_angle_gamma   38.646
_symmetry_Int_Tables_number   1
_cell_volume   377.888
_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
  Sr  Sr0  1  0.807  0.840  0.970  1.0
  Sr  Sr1  1  0.193  0.163  0.033  1.0
  Sr  Sr2  1  0.629  0.663  0.970  1.0
  Sr  Sr3  1  0.371  0.340  0.033  1.0
  Y  Y4  1  0.500  0.479  0.979  1.0
  Y  Y5  1  0.000  0.979  0.979  1.0
  Al  Al6  1  0.173  0.758  0.431  1.0
  Al  Al7  1  0.827  0.258  0.584  1.0
  W  W8  1  0.946  0.424  0.480  1.0
  W  W9  1  0.054  0.534  0.478  1.0
  W  W10  1  0.556  0.034  0.480  1.0
  W  W11  1  0.444  0.924  0.478  1.0
  O  O12  1  0.918  0.568  0.986  1.0
  O  O13  1  0.082  0.068  0.650  1.0
  O  O14  1  0.731  0.711  0.590  1.0
  O  O15  1  0.269  0.859  0.980  1.0
  O  O16  1  0.379  0.359  0.590  1.0
  O  O17  1  0.621  0.211  0.980  1.0
  O  O18  1  0.119  0.095  0.363  1.0
  O  O19  1  0.881  0.244  0.976  1.0
  O  O20  1  0.768  0.744  0.363  1.0
  O  O21  1  0.232  0.595  0.976  1.0
  O  O22  1  0.378  0.769  0.514  1.0
  O  O23  1  0.622  0.136  0.392  1.0
  O  O24  1  0.244  0.636  0.514  1.0
  O  O25  1  0.756  0.269  0.392  1.0
[/CIF]
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The material structure described by Sr2YW2AlO7 crystallizes in the orthorhombic Ima2 space group. Sr(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), and two equivalent O(4) atoms. Y(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. W(1) is bonded in a distorted square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. Al(1) is bonded to two equivalent O(1) and two equivalent O(4) atoms to form corner-sharing AlO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Al(1) atom. In the second O site, O(1) is bonded to two equivalent Sr(1) and two equivalent Al(1) atoms to form distorted OSr2Al2 tetrahedra that share corners with two equivalent O(1)Sr2Al2 tetrahedra and corners with two equivalent O(3)SrYW2 trigonal pyramids. In the third O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Y(1), and two equivalent W(1) atoms. In the fourth O site, O(3) is bonded to one Sr(1), one Y(1), and two equivalent W(1) atoms to form distorted OSrYW2 trigonal pyramids that share  a cornercorner with one O(1)Sr2Al2 tetrahedra and corners with three equivalent O(3)SrYW2 trigonal pyramids. is represented by the CIF file [CIF]
data_Sr2YAlW2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.231
_cell_length_b   12.231
_cell_length_c   12.231
_cell_angle_alpha   153.399
_cell_angle_beta   152.484
_cell_angle_gamma   38.646
_symmetry_Int_Tables_number   1
_cell_volume   377.888
_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
  Sr  Sr0  1  0.807  0.840  0.970  1.0
  Sr  Sr1  1  0.193  0.163  0.033  1.0
  Sr  Sr2  1  0.629  0.663  0.970  1.0
  Sr  Sr3  1  0.371  0.340  0.033  1.0
  Y  Y4  1  0.500  0.479  0.979  1.0
  Y  Y5  1  0.000  0.979  0.979  1.0
  Al  Al6  1  0.173  0.758  0.431  1.0
  Al  Al7  1  0.827  0.258  0.584  1.0
  W  W8  1  0.946  0.424  0.480  1.0
  W  W9  1  0.054  0.534  0.478  1.0
  W  W10  1  0.556  0.034  0.480  1.0
  W  W11  1  0.444  0.924  0.478  1.0
  O  O12  1  0.918  0.568  0.986  1.0
  O  O13  1  0.082  0.068  0.650  1.0
  O  O14  1  0.731  0.711  0.590  1.0
  O  O15  1  0.269  0.859  0.980  1.0
  O  O16  1  0.379  0.359  0.590  1.0
  O  O17  1  0.621  0.211  0.980  1.0
  O  O18  1  0.119  0.095  0.363  1.0
  O  O19  1  0.881  0.244  0.976  1.0
  O  O20  1  0.768  0.744  0.363  1.0
  O  O21  1  0.232  0.595  0.976  1.0
  O  O22  1  0.378  0.769  0.514  1.0
  O  O23  1  0.622  0.136  0.392  1.0
  O  O24  1  0.244  0.636  0.514  1.0
  O  O25  1  0.756  0.269  0.392  1.0
[/CIF]
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