The structure described by BaHfN2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded to five equivalent N(1) atoms to form a mixture of corner and edge-sharing BaN5 square pyramids. Hf(1) is bonded in a 5-coordinate geometry to one N(1) and four equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to five equivalent Ba(1) and one Hf(1) atom to form distorted NBa5Hf octahedra that share corners with four equivalent N(1)Ba5Hf octahedra, corners with four equivalent N(2)Hf4 trigonal pyramids, and edges with eight equivalent N(1)Ba5Hf octahedra. The corner-sharing octahedral tilt angles are 9°. In the second N site, N(2) is bonded to four equivalent Hf(1) atoms to form distorted NHf4 trigonal pyramids that share corners with four equivalent N(1)Ba5Hf octahedra, corners with four equivalent N(2)Hf4 trigonal pyramids, and edges with four equivalent N(2)Hf4 trigonal pyramids. The corner-sharing octahedral tilt angles are 71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaHfN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.132
_cell_length_b   4.132
_cell_length_c   8.428
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   143.917
_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
  Ba  Ba0  1  0.750  0.750  0.152  1.0
  Ba  Ba1  1  0.250  0.250  0.848  1.0
  Hf  Hf2  1  0.250  0.250  0.415  1.0
  Hf  Hf3  1  0.750  0.750  0.585  1.0
  N  N4  1  0.750  0.750  0.819  1.0
  N  N5  1  0.250  0.250  0.181  1.0
  N  N6  1  0.750  0.250  0.500  1.0
  N  N7  1  0.250  0.750  0.500  1.0
[/CIF]
.
The structure described by BaHfN2 crystallizes in the tetragonal P4/nmm space group. Ba(1) is bonded to five equivalent N(1) atoms to form a mixture of corner and edge-sharing BaN5 square pyramids. Hf(1) is bonded in a 5-coordinate geometry to one N(1) and four equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to five equivalent Ba(1) and one Hf(1) atom to form distorted NBa5Hf octahedra that share corners with four equivalent N(1)Ba5Hf octahedra, corners with four equivalent N(2)Hf4 trigonal pyramids, and edges with eight equivalent N(1)Ba5Hf octahedra. The corner-sharing octahedral tilt angles are 9°. In the second N site, N(2) is bonded to four equivalent Hf(1) atoms to form distorted NHf4 trigonal pyramids that share corners with four equivalent N(1)Ba5Hf octahedra, corners with four equivalent N(2)Hf4 trigonal pyramids, and edges with four equivalent N(2)Hf4 trigonal pyramids. The corner-sharing octahedral tilt angles are 71°. is represented by the Crystallographic Information File (CIF) [CIF]
data_BaHfN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.132
_cell_length_b   4.132
_cell_length_c   8.428
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   143.917
_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
  Ba  Ba0  1  0.750  0.750  0.152  1.0
  Ba  Ba1  1  0.250  0.250  0.848  1.0
  Hf  Hf2  1  0.250  0.250  0.415  1.0
  Hf  Hf3  1  0.750  0.750  0.585  1.0
  N  N4  1  0.750  0.750  0.819  1.0
  N  N5  1  0.250  0.250  0.181  1.0
  N  N6  1  0.750  0.250  0.500  1.0
  N  N7  1  0.250  0.750  0.500  1.0
[/CIF]
.