The compound described by Ca4Al6WO16 crystallizes in the cubic I-43m space group. Ca(1) is bonded to one O(2) and three equivalent O(1) atoms to form CaO4 trigonal pyramids that share  a cornercorner with one W(1)O4 tetrahedra and corners with six equivalent Al(1)O4 tetrahedra. W(1) is bonded to four equivalent O(2) atoms to form WO4 tetrahedra that share corners with four equivalent Ca(1)O4 trigonal pyramids. Al(1) is bonded to four equivalent O(1) atoms to form AlO4 tetrahedra that share corners with four equivalent Al(1)O4 tetrahedra and corners with four equivalent Ca(1)O4 trigonal pyramids. There are two inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to one Ca(1) and one W(1) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1) and two equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca4Al6WO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.193
_cell_length_b   8.193
_cell_length_c   8.193
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   423.323
_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
  Ca  Ca0  1  0.000  0.000  0.498  1.0
  Ca  Ca1  1  0.000  0.498  0.000  1.0
  Ca  Ca2  1  0.502  0.502  0.502  1.0
  Ca  Ca3  1  0.498  0.000  0.000  1.0
  Al  Al4  1  0.500  0.250  0.750  1.0
  Al  Al5  1  0.750  0.250  0.500  1.0
  Al  Al6  1  0.750  0.500  0.250  1.0
  Al  Al7  1  0.250  0.500  0.750  1.0
  Al  Al8  1  0.250  0.750  0.500  1.0
  Al  Al9  1  0.500  0.750  0.250  1.0
  W  W10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.693  0.303  0.303  1.0
  O  O12  1  0.610  0.610  0.307  1.0
  O  O13  1  0.610  0.307  0.610  1.0
  O  O14  1  0.697  0.000  0.390  1.0
  O  O15  1  0.697  0.390  0.000  1.0
  O  O16  1  0.303  0.693  0.303  1.0
  O  O17  1  0.390  0.000  0.697  1.0
  O  O18  1  0.000  0.697  0.390  1.0
  O  O19  1  0.000  0.390  0.697  1.0
  O  O20  1  0.390  0.697  0.000  1.0
  O  O21  1  0.303  0.303  0.693  1.0
  O  O22  1  0.779  0.779  0.779  1.0
  O  O23  1  0.000  0.000  0.221  1.0
  O  O24  1  0.221  0.000  0.000  1.0
  O  O25  1  0.000  0.221  0.000  1.0
  O  O26  1  0.307  0.610  0.610  1.0
[/CIF]
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The compound described by Ca4Al6WO16 crystallizes in the cubic I-43m space group. Ca(1) is bonded to one O(2) and three equivalent O(1) atoms to form CaO4 trigonal pyramids that share  a cornercorner with one W(1)O4 tetrahedra and corners with six equivalent Al(1)O4 tetrahedra. W(1) is bonded to four equivalent O(2) atoms to form WO4 tetrahedra that share corners with four equivalent Ca(1)O4 trigonal pyramids. Al(1) is bonded to four equivalent O(1) atoms to form AlO4 tetrahedra that share corners with four equivalent Al(1)O4 tetrahedra and corners with four equivalent Ca(1)O4 trigonal pyramids. There are two inequivalent O sites. In the first O site, O(2) is bonded in a linear geometry to one Ca(1) and one W(1) atom. In the second O site, O(1) is bonded in a 3-coordinate geometry to one Ca(1) and two equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca4Al6WO16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.193
_cell_length_b   8.193
_cell_length_c   8.193
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   423.323
_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
  Ca  Ca0  1  0.000  0.000  0.498  1.0
  Ca  Ca1  1  0.000  0.498  0.000  1.0
  Ca  Ca2  1  0.502  0.502  0.502  1.0
  Ca  Ca3  1  0.498  0.000  0.000  1.0
  Al  Al4  1  0.500  0.250  0.750  1.0
  Al  Al5  1  0.750  0.250  0.500  1.0
  Al  Al6  1  0.750  0.500  0.250  1.0
  Al  Al7  1  0.250  0.500  0.750  1.0
  Al  Al8  1  0.250  0.750  0.500  1.0
  Al  Al9  1  0.500  0.750  0.250  1.0
  W  W10  1  0.000  0.000  0.000  1.0
  O  O11  1  0.693  0.303  0.303  1.0
  O  O12  1  0.610  0.610  0.307  1.0
  O  O13  1  0.610  0.307  0.610  1.0
  O  O14  1  0.697  0.000  0.390  1.0
  O  O15  1  0.697  0.390  0.000  1.0
  O  O16  1  0.303  0.693  0.303  1.0
  O  O17  1  0.390  0.000  0.697  1.0
  O  O18  1  0.000  0.697  0.390  1.0
  O  O19  1  0.000  0.390  0.697  1.0
  O  O20  1  0.390  0.697  0.000  1.0
  O  O21  1  0.303  0.303  0.693  1.0
  O  O22  1  0.779  0.779  0.779  1.0
  O  O23  1  0.000  0.000  0.221  1.0
  O  O24  1  0.221  0.000  0.000  1.0
  O  O25  1  0.000  0.221  0.000  1.0
  O  O26  1  0.307  0.610  0.610  1.0
[/CIF]
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