The compound described by W5Al6N16 crystallizes in the cubic I-43m space group. There are two inequivalent W sites. In the first W site, W(1) is bonded to one N(1) and three equivalent N(2) atoms to form WN4 tetrahedra that share  a cornercorner with one W(2)N4 tetrahedra and corners with six equivalent Al(1)N4 tetrahedra. In the second W site, W(2) is bonded to four equivalent N(1) atoms to form corner-sharing WN4 tetrahedra. Al(1) is bonded to four equivalent N(2) atoms to form AlN4 tetrahedra that share corners with four equivalent W(1)N4 tetrahedra and corners with four equivalent Al(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one W(1) and one W(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one W(1) and two equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al6W5N16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.859
_cell_length_b   9.075
_cell_length_c   9.075
_cell_angle_alpha   90.000
_cell_angle_beta   54.736
_cell_angle_gamma   54.736
_symmetry_Int_Tables_number   1
_cell_volume   373.709
_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
  Al  Al0  1  0.000  0.750  0.500  1.0
  Al  Al1  1  0.000  0.500  0.750  1.0
  Al  Al2  1  0.500  0.750  0.250  1.0
  Al  Al3  1  0.000  0.250  0.500  1.0
  Al  Al4  1  0.000  0.500  0.250  1.0
  Al  Al5  1  0.500  0.250  0.750  1.0
  W  W6  1  0.474  0.000  0.526  1.0
  W  W7  1  0.474  0.526  0.000  1.0
  W  W8  1  0.526  0.474  0.474  1.0
  W  W9  1  0.526  0.000  0.000  1.0
  W  W10  1  0.000  0.000  0.000  1.0
  N  N11  1  0.237  0.000  0.763  1.0
  N  N12  1  0.237  0.763  0.000  1.0
  N  N13  1  0.763  0.237  0.237  1.0
  N  N14  1  0.763  0.000  0.000  1.0
  N  N15  1  0.700  0.000  0.546  1.0
  N  N16  1  0.208  0.246  0.546  1.0
  N  N17  1  0.700  0.754  0.300  1.0
  N  N18  1  0.700  0.300  0.754  1.0
  N  N19  1  0.208  0.546  0.246  1.0
  N  N20  1  0.700  0.546  0.000  1.0
  N  N21  1  0.300  0.700  0.454  1.0
  N  N22  1  0.792  0.454  0.454  1.0
  N  N23  1  0.300  0.454  0.700  1.0
  N  N24  1  0.300  0.000  0.246  1.0
  N  N25  1  0.792  0.754  0.754  1.0
  N  N26  1  0.300  0.246  0.000  1.0
[/CIF]
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The compound described by W5Al6N16 crystallizes in the cubic I-43m space group. There are two inequivalent W sites. In the first W site, W(1) is bonded to one N(1) and three equivalent N(2) atoms to form WN4 tetrahedra that share  a cornercorner with one W(2)N4 tetrahedra and corners with six equivalent Al(1)N4 tetrahedra. In the second W site, W(2) is bonded to four equivalent N(1) atoms to form corner-sharing WN4 tetrahedra. Al(1) is bonded to four equivalent N(2) atoms to form AlN4 tetrahedra that share corners with four equivalent W(1)N4 tetrahedra and corners with four equivalent Al(1)N4 tetrahedra. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one W(1) and one W(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one W(1) and two equivalent Al(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Al6W5N16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.859
_cell_length_b   9.075
_cell_length_c   9.075
_cell_angle_alpha   90.000
_cell_angle_beta   54.736
_cell_angle_gamma   54.736
_symmetry_Int_Tables_number   1
_cell_volume   373.709
_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
  Al  Al0  1  0.000  0.750  0.500  1.0
  Al  Al1  1  0.000  0.500  0.750  1.0
  Al  Al2  1  0.500  0.750  0.250  1.0
  Al  Al3  1  0.000  0.250  0.500  1.0
  Al  Al4  1  0.000  0.500  0.250  1.0
  Al  Al5  1  0.500  0.250  0.750  1.0
  W  W6  1  0.474  0.000  0.526  1.0
  W  W7  1  0.474  0.526  0.000  1.0
  W  W8  1  0.526  0.474  0.474  1.0
  W  W9  1  0.526  0.000  0.000  1.0
  W  W10  1  0.000  0.000  0.000  1.0
  N  N11  1  0.237  0.000  0.763  1.0
  N  N12  1  0.237  0.763  0.000  1.0
  N  N13  1  0.763  0.237  0.237  1.0
  N  N14  1  0.763  0.000  0.000  1.0
  N  N15  1  0.700  0.000  0.546  1.0
  N  N16  1  0.208  0.246  0.546  1.0
  N  N17  1  0.700  0.754  0.300  1.0
  N  N18  1  0.700  0.300  0.754  1.0
  N  N19  1  0.208  0.546  0.246  1.0
  N  N20  1  0.700  0.546  0.000  1.0
  N  N21  1  0.300  0.700  0.454  1.0
  N  N22  1  0.792  0.454  0.454  1.0
  N  N23  1  0.300  0.454  0.700  1.0
  N  N24  1  0.300  0.000  0.246  1.0
  N  N25  1  0.792  0.754  0.754  1.0
  N  N26  1  0.300  0.246  0.000  1.0
[/CIF]
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