The structure described by HfTiN2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Hf(1) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form HfN6 octahedra that share corners with six equivalent Hf(1)N6 octahedra, edges with four equivalent Hf(1)N6 octahedra, and edges with eight equivalent Ti(1)N6 octahedra. The corner-sharing octahedra are not tilted. Ti(1) is bonded to two equivalent N(2) and four equivalent N(1) atoms to form TiN6 octahedra that share corners with six equivalent Ti(1)N6 octahedra, edges with four equivalent Ti(1)N6 octahedra, and edges with eight equivalent Hf(1)N6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Hf(1) and four equivalent Ti(1) atoms to form NHf2Ti4 octahedra that share corners with six equivalent N(1)Hf2Ti4 octahedra, edges with four equivalent N(1)Hf2Ti4 octahedra, and edges with eight equivalent N(2)Hf4Ti2 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to four equivalent Hf(1) and two equivalent Ti(1) atoms to form NHf4Ti2 octahedra that share corners with six equivalent N(2)Hf4Ti2 octahedra, edges with four equivalent N(2)Hf4Ti2 octahedra, and edges with eight equivalent N(1)Hf2Ti4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_HfTiN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.125
_cell_length_b   3.125
_cell_length_c   4.415
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   43.124
_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
  Hf  Hf0  1  0.000  0.000  0.000  1.0
  Ti  Ti1  1  0.500  0.500  0.500  1.0
  N  N2  1  0.000  0.000  0.500  1.0
  N  N3  1  0.500  0.500  0.000  1.0
[/CIF]
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The structure described by HfTiN2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. Hf(1) is bonded to two equivalent N(1) and four equivalent N(2) atoms to form HfN6 octahedra that share corners with six equivalent Hf(1)N6 octahedra, edges with four equivalent Hf(1)N6 octahedra, and edges with eight equivalent Ti(1)N6 octahedra. The corner-sharing octahedra are not tilted. Ti(1) is bonded to two equivalent N(2) and four equivalent N(1) atoms to form TiN6 octahedra that share corners with six equivalent Ti(1)N6 octahedra, edges with four equivalent Ti(1)N6 octahedra, and edges with eight equivalent Hf(1)N6 octahedra. The corner-sharing octahedra are not tilted. There are two inequivalent N sites. In the first N site, N(1) is bonded to two equivalent Hf(1) and four equivalent Ti(1) atoms to form NHf2Ti4 octahedra that share corners with six equivalent N(1)Hf2Ti4 octahedra, edges with four equivalent N(1)Hf2Ti4 octahedra, and edges with eight equivalent N(2)Hf4Ti2 octahedra. The corner-sharing octahedra are not tilted. In the second N site, N(2) is bonded to four equivalent Hf(1) and two equivalent Ti(1) atoms to form NHf4Ti2 octahedra that share corners with six equivalent N(2)Hf4Ti2 octahedra, edges with four equivalent N(2)Hf4Ti2 octahedra, and edges with eight equivalent N(1)Hf2Ti4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_HfTiN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.125
_cell_length_b   3.125
_cell_length_c   4.415
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   43.124
_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
  Hf  Hf0  1  0.000  0.000  0.000  1.0
  Ti  Ti1  1  0.500  0.500  0.500  1.0
  N  N2  1  0.000  0.000  0.500  1.0
  N  N3  1  0.500  0.500  0.000  1.0
[/CIF]
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