The structure described by Sr3W3N5 crystallizes in the triclinic P-1 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one N(3), one N(4), one N(5), and two equivalent N(2) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(4), two equivalent N(1), and two equivalent N(5) atoms. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to one N(1), one N(2), one N(4), and two equivalent N(3) atoms. There are three inequivalent W sites. In the first W site, W(1) is bonded to one N(1), one N(5), and two equivalent N(3) atoms to form a mixture of distorted corner and edge-sharing WN4 tetrahedra. In the second W site, W(2) is bonded to one N(1), one N(2), and two equivalent N(4) atoms to form a mixture of distorted corner and edge-sharing WN4 trigonal pyramids. In the third W site, W(3) is bonded to one N(1), one N(2), one N(4), and one N(5) atom to form a mixture of distorted corner and edge-sharing WN4 trigonal pyramids. There are five inequivalent N sites. In the first N site, N(1) is bonded to one Sr(3), two equivalent Sr(2), one W(1), one W(2), and one W(3) atom to form NSr3W3 octahedra that share corners with two equivalent N(2)Sr4W2 octahedra, corners with three equivalent N(3)Sr4W2 octahedra,  an edgeedge with one N(1)Sr3W3 octahedra,  a faceface with one N(2)Sr4W2 octahedra, and  a faceface with one N(3)Sr4W2 octahedra. The corner-sharing octahedral tilt angles range from 34-66°. In the second N site, N(2) is bonded to one Sr(2), one Sr(3), two equivalent Sr(1), one W(2), and one W(3) atom to form NSr4W2 octahedra that share  a cornercorner with one N(3)Sr4W2 octahedra, corners with two equivalent N(1)Sr3W3 octahedra,  an edgeedge with one N(2)Sr4W2 octahedra, edges with two equivalent N(3)Sr4W2 octahedra, and  a faceface with one N(1)Sr3W3 octahedra. The corner-sharing octahedral tilt angles range from 27-63°. In the third N site, N(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), and two equivalent W(1) atoms to form distorted NSr4W2 octahedra that share  a cornercorner with one N(2)Sr4W2 octahedra, corners with three equivalent N(1)Sr3W3 octahedra, edges with two equivalent N(2)Sr4W2 octahedra, edges with two equivalent N(3)Sr4W2 octahedra, and  a faceface with one N(1)Sr3W3 octahedra. The corner-sharing octahedral tilt angles range from 27-66°. In the fourth N site, N(4) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one W(3), and two equivalent W(2) atoms. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one W(1), and one W(3) atom. is represented by the CIF card [CIF]
data_Sr3W3N5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.156
_cell_length_b   7.962
_cell_length_c   8.408
_cell_angle_alpha   108.338
_cell_angle_beta   103.332
_cell_angle_gamma   103.946
_symmetry_Int_Tables_number   1
_cell_volume   358.038
_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  0.754  0.450  0.601  1.0
  Sr  Sr1  1  0.246  0.550  0.399  1.0
  Sr  Sr2  1  0.653  0.855  0.885  1.0
  Sr  Sr3  1  0.347  0.145  0.115  1.0
  Sr  Sr4  1  0.680  0.681  0.233  1.0
  Sr  Sr5  1  0.320  0.319  0.767  1.0
  W  W6  1  0.903  0.307  0.959  1.0
  W  W7  1  0.097  0.693  0.041  1.0
  W  W8  1  0.722  0.020  0.593  1.0
  W  W9  1  0.278  0.980  0.407  1.0
  W  W10  1  0.089  0.878  0.676  1.0
  W  W11  1  0.911  0.122  0.324  1.0
  N  N12  1  0.996  0.083  0.834  1.0
  N  N13  1  0.004  0.917  0.166  1.0
  N  N14  1  0.722  0.750  0.564  1.0
  N  N15  1  0.278  0.250  0.436  1.0
  N  N16  1  0.763  0.517  0.930  1.0
  N  N17  1  0.237  0.483  0.070  1.0
  N  N18  1  0.400  0.945  0.637  1.0
  N  N19  1  0.600  0.055  0.363  1.0
  N  N20  1  0.189  0.777  0.869  1.0
  N  N21  1  0.811  0.223  0.131  1.0
[/CIF]
.
The structure described by Sr3W3N5 crystallizes in the triclinic P-1 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 5-coordinate geometry to one N(3), one N(4), one N(5), and two equivalent N(2) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one N(2), one N(3), one N(4), two equivalent N(1), and two equivalent N(5) atoms. In the third Sr site, Sr(3) is bonded in a 5-coordinate geometry to one N(1), one N(2), one N(4), and two equivalent N(3) atoms. There are three inequivalent W sites. In the first W site, W(1) is bonded to one N(1), one N(5), and two equivalent N(3) atoms to form a mixture of distorted corner and edge-sharing WN4 tetrahedra. In the second W site, W(2) is bonded to one N(1), one N(2), and two equivalent N(4) atoms to form a mixture of distorted corner and edge-sharing WN4 trigonal pyramids. In the third W site, W(3) is bonded to one N(1), one N(2), one N(4), and one N(5) atom to form a mixture of distorted corner and edge-sharing WN4 trigonal pyramids. There are five inequivalent N sites. In the first N site, N(1) is bonded to one Sr(3), two equivalent Sr(2), one W(1), one W(2), and one W(3) atom to form NSr3W3 octahedra that share corners with two equivalent N(2)Sr4W2 octahedra, corners with three equivalent N(3)Sr4W2 octahedra,  an edgeedge with one N(1)Sr3W3 octahedra,  a faceface with one N(2)Sr4W2 octahedra, and  a faceface with one N(3)Sr4W2 octahedra. The corner-sharing octahedral tilt angles range from 34-66°. In the second N site, N(2) is bonded to one Sr(2), one Sr(3), two equivalent Sr(1), one W(2), and one W(3) atom to form NSr4W2 octahedra that share  a cornercorner with one N(3)Sr4W2 octahedra, corners with two equivalent N(1)Sr3W3 octahedra,  an edgeedge with one N(2)Sr4W2 octahedra, edges with two equivalent N(3)Sr4W2 octahedra, and  a faceface with one N(1)Sr3W3 octahedra. The corner-sharing octahedral tilt angles range from 27-63°. In the third N site, N(3) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), and two equivalent W(1) atoms to form distorted NSr4W2 octahedra that share  a cornercorner with one N(2)Sr4W2 octahedra, corners with three equivalent N(1)Sr3W3 octahedra, edges with two equivalent N(2)Sr4W2 octahedra, edges with two equivalent N(3)Sr4W2 octahedra, and  a faceface with one N(1)Sr3W3 octahedra. The corner-sharing octahedral tilt angles range from 27-66°. In the fourth N site, N(4) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one W(3), and two equivalent W(2) atoms. In the fifth N site, N(5) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(2), one W(1), and one W(3) atom. is represented by the CIF card [CIF]
data_Sr3W3N5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.156
_cell_length_b   7.962
_cell_length_c   8.408
_cell_angle_alpha   108.338
_cell_angle_beta   103.332
_cell_angle_gamma   103.946
_symmetry_Int_Tables_number   1
_cell_volume   358.038
_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  0.754  0.450  0.601  1.0
  Sr  Sr1  1  0.246  0.550  0.399  1.0
  Sr  Sr2  1  0.653  0.855  0.885  1.0
  Sr  Sr3  1  0.347  0.145  0.115  1.0
  Sr  Sr4  1  0.680  0.681  0.233  1.0
  Sr  Sr5  1  0.320  0.319  0.767  1.0
  W  W6  1  0.903  0.307  0.959  1.0
  W  W7  1  0.097  0.693  0.041  1.0
  W  W8  1  0.722  0.020  0.593  1.0
  W  W9  1  0.278  0.980  0.407  1.0
  W  W10  1  0.089  0.878  0.676  1.0
  W  W11  1  0.911  0.122  0.324  1.0
  N  N12  1  0.996  0.083  0.834  1.0
  N  N13  1  0.004  0.917  0.166  1.0
  N  N14  1  0.722  0.750  0.564  1.0
  N  N15  1  0.278  0.250  0.436  1.0
  N  N16  1  0.763  0.517  0.930  1.0
  N  N17  1  0.237  0.483  0.070  1.0
  N  N18  1  0.400  0.945  0.637  1.0
  N  N19  1  0.600  0.055  0.363  1.0
  N  N20  1  0.189  0.777  0.869  1.0
  N  N21  1  0.811  0.223  0.131  1.0
[/CIF]
.