The structure described by NiZn2N2 crystallizes in the monoclinic C2/m space group. Ni(1) is bonded in a distorted trigonal planar geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. In the second Zn site, Zn(2) is bonded in a trigonal planar geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ni(1), one Zn(2), and two equivalent Zn(1) atoms to form distorted NZn3Ni tetrahedra that share corners with two equivalent N(1)Zn3Ni tetrahedra and corners with six equivalent N(2)Zn3Ni2 trigonal bipyramids. In the second N site, N(2) is bonded to two equivalent Ni(1), one Zn(1), and two equivalent Zn(2) atoms to form NZn3Ni2 trigonal bipyramids that share corners with six equivalent N(1)Zn3Ni tetrahedra, corners with two equivalent N(2)Zn3Ni2 trigonal bipyramids, and  an edgeedge with one N(2)Zn3Ni2 trigonal bipyramid. is represented by the CIF file [CIF]
data_Zn2NiN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.984
_cell_length_b   5.984
_cell_length_c   7.262
_cell_angle_alpha   58.964
_cell_angle_beta   58.964
_cell_angle_gamma   35.036
_symmetry_Int_Tables_number   1
_cell_volume   125.593
_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
  Zn  Zn0  1  0.341  0.341  0.019  1.0
  Zn  Zn1  1  0.659  0.659  0.981  1.0
  Zn  Zn2  1  0.912  0.912  0.295  1.0
  Zn  Zn3  1  0.088  0.088  0.705  1.0
  Ni  Ni4  1  0.619  0.619  0.383  1.0
  Ni  Ni5  1  0.381  0.381  0.617  1.0
  N  N6  1  0.806  0.806  0.146  1.0
  N  N7  1  0.194  0.194  0.854  1.0
  N  N8  1  0.523  0.523  0.683  1.0
  N  N9  1  0.477  0.477  0.317  1.0
[/CIF]
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The structure described by NiZn2N2 crystallizes in the monoclinic C2/m space group. Ni(1) is bonded in a distorted trigonal planar geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. In the second Zn site, Zn(2) is bonded in a trigonal planar geometry to one N(1) and two equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded to one Ni(1), one Zn(2), and two equivalent Zn(1) atoms to form distorted NZn3Ni tetrahedra that share corners with two equivalent N(1)Zn3Ni tetrahedra and corners with six equivalent N(2)Zn3Ni2 trigonal bipyramids. In the second N site, N(2) is bonded to two equivalent Ni(1), one Zn(1), and two equivalent Zn(2) atoms to form NZn3Ni2 trigonal bipyramids that share corners with six equivalent N(1)Zn3Ni tetrahedra, corners with two equivalent N(2)Zn3Ni2 trigonal bipyramids, and  an edgeedge with one N(2)Zn3Ni2 trigonal bipyramid. is represented by the CIF file [CIF]
data_Zn2NiN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.984
_cell_length_b   5.984
_cell_length_c   7.262
_cell_angle_alpha   58.964
_cell_angle_beta   58.964
_cell_angle_gamma   35.036
_symmetry_Int_Tables_number   1
_cell_volume   125.593
_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
  Zn  Zn0  1  0.341  0.341  0.019  1.0
  Zn  Zn1  1  0.659  0.659  0.981  1.0
  Zn  Zn2  1  0.912  0.912  0.295  1.0
  Zn  Zn3  1  0.088  0.088  0.705  1.0
  Ni  Ni4  1  0.619  0.619  0.383  1.0
  Ni  Ni5  1  0.381  0.381  0.617  1.0
  N  N6  1  0.806  0.806  0.146  1.0
  N  N7  1  0.194  0.194  0.854  1.0
  N  N8  1  0.523  0.523  0.683  1.0
  N  N9  1  0.477  0.477  0.317  1.0
[/CIF]
.