The compound described by Sr4VN4 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one N(2) and three equivalent N(1) atoms to form a mixture of distorted edge and corner-sharing SrN4 trigonal pyramids. In the second Sr site, Sr(2) is bonded in a trigonal non-coplanar geometry to one N(4) and two equivalent N(2) atoms. In the third Sr site, Sr(3) is bonded to one N(2), one N(4), and two equivalent N(3) atoms to form distorted corner-sharing SrN4 tetrahedra. In the fourth Sr site, Sr(4) is bonded to one N(1), one N(3), and two equivalent N(4) atoms to form corner-sharing SrN4 tetrahedra. V(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(3) atom. There are four inequivalent N sites. In the first N site, N(4) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), and two equivalent Sr(4) atoms. In the second N site, N(1) is bonded to one Sr(4), three equivalent Sr(1), and one V(1) atom to form distorted NSr4V trigonal bipyramids that share corners with two equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, corners with two equivalent N(2)Sr4V trigonal bipyramids,  an edgeedge with one N(2)Sr4V trigonal bipyramid, and edges with two equivalent N(1)Sr4V trigonal bipyramids. In the third N site, N(2) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), and one V(1) atom to form distorted NSr4V trigonal bipyramids that share corners with three equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, corners with two equivalent N(2)Sr4V trigonal bipyramids, and  an edgeedge with one N(1)Sr4V trigonal bipyramid. In the fourth N site, N(3) is bonded to one Sr(4), two equivalent Sr(3), and one V(1) atom to form NSr3V tetrahedra that share corners with two equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, and corners with three equivalent N(2)Sr4V trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4VN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.450
_cell_length_b   4.476
_cell_length_c   13.769
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   767.361
_cell_formula_units_Z   4
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  0.558  0.250  0.917  1.0
  Sr  Sr1  1  0.058  0.250  0.583  1.0
  Sr  Sr2  1  0.442  0.750  0.083  1.0
  Sr  Sr3  1  0.942  0.750  0.417  1.0
  Sr  Sr4  1  0.634  0.250  0.509  1.0
  Sr  Sr5  1  0.134  0.250  0.991  1.0
  Sr  Sr6  1  0.366  0.750  0.491  1.0
  Sr  Sr7  1  0.866  0.750  0.009  1.0
  Sr  Sr8  1  0.817  0.250  0.812  1.0
  Sr  Sr9  1  0.317  0.250  0.688  1.0
  Sr  Sr10  1  0.183  0.750  0.188  1.0
  Sr  Sr11  1  0.683  0.750  0.312  1.0
  Sr  Sr12  1  0.943  0.250  0.211  1.0
  Sr  Sr13  1  0.443  0.250  0.289  1.0
  Sr  Sr14  1  0.057  0.750  0.789  1.0
  Sr  Sr15  1  0.557  0.750  0.711  1.0
  V  V16  1  0.675  0.250  0.119  1.0
  V  V17  1  0.175  0.250  0.381  1.0
  V  V18  1  0.325  0.750  0.881  1.0
  V  V19  1  0.825  0.750  0.619  1.0
  N  N20  1  0.530  0.250  0.106  1.0
  N  N21  1  0.030  0.250  0.394  1.0
  N  N22  1  0.470  0.750  0.894  1.0
  N  N23  1  0.970  0.750  0.606  1.0
  N  N24  1  0.748  0.250  0.006  1.0
  N  N25  1  0.248  0.250  0.494  1.0
  N  N26  1  0.252  0.750  0.994  1.0
  N  N27  1  0.752  0.750  0.506  1.0
  N  N28  1  0.736  0.250  0.237  1.0
  N  N29  1  0.236  0.250  0.263  1.0
  N  N30  1  0.264  0.750  0.763  1.0
  N  N31  1  0.764  0.750  0.737  1.0
  N  N32  1  0.003  0.250  0.861  1.0
  N  N33  1  0.503  0.250  0.639  1.0
  N  N34  1  0.997  0.750  0.139  1.0
  N  N35  1  0.497  0.750  0.361  1.0
[/CIF]
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The compound described by Sr4VN4 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to one N(2) and three equivalent N(1) atoms to form a mixture of distorted edge and corner-sharing SrN4 trigonal pyramids. In the second Sr site, Sr(2) is bonded in a trigonal non-coplanar geometry to one N(4) and two equivalent N(2) atoms. In the third Sr site, Sr(3) is bonded to one N(2), one N(4), and two equivalent N(3) atoms to form distorted corner-sharing SrN4 tetrahedra. In the fourth Sr site, Sr(4) is bonded to one N(1), one N(3), and two equivalent N(4) atoms to form corner-sharing SrN4 tetrahedra. V(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one N(3) atom. There are four inequivalent N sites. In the first N site, N(4) is bonded in a distorted see-saw-like geometry to one Sr(2), one Sr(3), and two equivalent Sr(4) atoms. In the second N site, N(1) is bonded to one Sr(4), three equivalent Sr(1), and one V(1) atom to form distorted NSr4V trigonal bipyramids that share corners with two equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, corners with two equivalent N(2)Sr4V trigonal bipyramids,  an edgeedge with one N(2)Sr4V trigonal bipyramid, and edges with two equivalent N(1)Sr4V trigonal bipyramids. In the third N site, N(2) is bonded to one Sr(1), one Sr(3), two equivalent Sr(2), and one V(1) atom to form distorted NSr4V trigonal bipyramids that share corners with three equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, corners with two equivalent N(2)Sr4V trigonal bipyramids, and  an edgeedge with one N(1)Sr4V trigonal bipyramid. In the fourth N site, N(3) is bonded to one Sr(4), two equivalent Sr(3), and one V(1) atom to form NSr3V tetrahedra that share corners with two equivalent N(3)Sr3V tetrahedra, corners with two equivalent N(1)Sr4V trigonal bipyramids, and corners with three equivalent N(2)Sr4V trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr4VN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   12.450
_cell_length_b   4.476
_cell_length_c   13.769
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   767.361
_cell_formula_units_Z   4
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  0.558  0.250  0.917  1.0
  Sr  Sr1  1  0.058  0.250  0.583  1.0
  Sr  Sr2  1  0.442  0.750  0.083  1.0
  Sr  Sr3  1  0.942  0.750  0.417  1.0
  Sr  Sr4  1  0.634  0.250  0.509  1.0
  Sr  Sr5  1  0.134  0.250  0.991  1.0
  Sr  Sr6  1  0.366  0.750  0.491  1.0
  Sr  Sr7  1  0.866  0.750  0.009  1.0
  Sr  Sr8  1  0.817  0.250  0.812  1.0
  Sr  Sr9  1  0.317  0.250  0.688  1.0
  Sr  Sr10  1  0.183  0.750  0.188  1.0
  Sr  Sr11  1  0.683  0.750  0.312  1.0
  Sr  Sr12  1  0.943  0.250  0.211  1.0
  Sr  Sr13  1  0.443  0.250  0.289  1.0
  Sr  Sr14  1  0.057  0.750  0.789  1.0
  Sr  Sr15  1  0.557  0.750  0.711  1.0
  V  V16  1  0.675  0.250  0.119  1.0
  V  V17  1  0.175  0.250  0.381  1.0
  V  V18  1  0.325  0.750  0.881  1.0
  V  V19  1  0.825  0.750  0.619  1.0
  N  N20  1  0.530  0.250  0.106  1.0
  N  N21  1  0.030  0.250  0.394  1.0
  N  N22  1  0.470  0.750  0.894  1.0
  N  N23  1  0.970  0.750  0.606  1.0
  N  N24  1  0.748  0.250  0.006  1.0
  N  N25  1  0.248  0.250  0.494  1.0
  N  N26  1  0.252  0.750  0.994  1.0
  N  N27  1  0.752  0.750  0.506  1.0
  N  N28  1  0.736  0.250  0.237  1.0
  N  N29  1  0.236  0.250  0.263  1.0
  N  N30  1  0.264  0.750  0.763  1.0
  N  N31  1  0.764  0.750  0.737  1.0
  N  N32  1  0.003  0.250  0.861  1.0
  N  N33  1  0.503  0.250  0.639  1.0
  N  N34  1  0.997  0.750  0.139  1.0
  N  N35  1  0.497  0.750  0.361  1.0
[/CIF]
.