The material described by RuNi4N4 crystallizes in the triclinic P-1 space group. Ru(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form RuN4 tetrahedra that share corners with four equivalent Ni(1)N4 trigonal pyramids. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form NiN4 trigonal pyramids that share corners with four equivalent Ru(1)N4 tetrahedra. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ni site, Ni(3) is bonded in a distorted T-shaped geometry to one N(1) and two equivalent N(4) atoms. In the fourth Ni site, Ni(4) is bonded in a 3-coordinate geometry to one N(4) and two equivalent N(1) atoms. There are four inequivalent N sites. In the first N site, N(1) is bonded to one Ru(1), one Ni(1), one Ni(3), and two equivalent Ni(4) atoms to form distorted NNi4Ru trigonal bipyramids that share corners with four equivalent N(4)Ni4Ru trigonal bipyramids, corners with two equivalent N(2)Ni3Ru trigonal pyramids,  an edgeedge with one N(1)Ni4Ru trigonal bipyramid, and  an edgeedge with one N(4)Ni4Ru trigonal bipyramid. In the second N site, N(2) is bonded to one Ru(1), one Ni(1), and two equivalent Ni(2) atoms to form NNi3Ru trigonal pyramids that share corners with two equivalent N(1)Ni4Ru trigonal bipyramids, corners with two equivalent N(4)Ni4Ru trigonal bipyramids, and  an edgeedge with one N(2)Ni3Ru trigonal pyramid. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Ru(1), one Ni(1), and two equivalent Ni(2) atoms. In the fourth N site, N(4) is bonded to one Ru(1), one Ni(1), one Ni(4), and two equivalent Ni(3) atoms to form NNi4Ru trigonal bipyramids that share corners with four equivalent N(1)Ni4Ru trigonal bipyramids, corners with two equivalent N(2)Ni3Ru trigonal pyramids,  an edgeedge with one N(1)Ni4Ru trigonal bipyramid, and  an edgeedge with one N(4)Ni4Ru trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni4RuN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.773
_cell_length_b   4.727
_cell_length_c   8.981
_cell_angle_alpha   70.044
_cell_angle_beta   95.402
_cell_angle_gamma   79.624
_symmetry_Int_Tables_number   1
_cell_volume   184.638
_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
  Ni  Ni0  1  0.799  0.618  0.201  1.0
  Ni  Ni1  1  0.201  0.382  0.799  1.0
  Ni  Ni2  1  0.706  0.190  0.986  1.0
  Ni  Ni3  1  0.294  0.810  0.014  1.0
  Ni  Ni4  1  0.673  0.541  0.597  1.0
  Ni  Ni5  1  0.327  0.459  0.403  1.0
  Ni  Ni6  1  0.124  0.087  0.591  1.0
  Ni  Ni7  1  0.876  0.913  0.409  1.0
  Ru  Ru8  1  0.657  0.896  0.781  1.0
  Ru  Ru9  1  0.343  0.104  0.219  1.0
  N  N10  1  0.927  0.763  0.654  1.0
  N  N11  1  0.073  0.237  0.346  1.0
  N  N12  1  0.894  0.803  0.992  1.0
  N  N13  1  0.106  0.197  0.008  1.0
  N  N14  1  0.439  0.599  0.878  1.0
  N  N15  1  0.561  0.401  0.122  1.0
  N  N16  1  0.602  0.708  0.361  1.0
  N  N17  1  0.398  0.292  0.639  1.0
[/CIF]
.
The material described by RuNi4N4 crystallizes in the triclinic P-1 space group. Ru(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form RuN4 tetrahedra that share corners with four equivalent Ni(1)N4 trigonal pyramids. There are four inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one N(1), one N(2), one N(3), and one N(4) atom to form NiN4 trigonal pyramids that share corners with four equivalent Ru(1)N4 tetrahedra. In the second Ni site, Ni(2) is bonded in a 4-coordinate geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ni site, Ni(3) is bonded in a distorted T-shaped geometry to one N(1) and two equivalent N(4) atoms. In the fourth Ni site, Ni(4) is bonded in a 3-coordinate geometry to one N(4) and two equivalent N(1) atoms. There are four inequivalent N sites. In the first N site, N(1) is bonded to one Ru(1), one Ni(1), one Ni(3), and two equivalent Ni(4) atoms to form distorted NNi4Ru trigonal bipyramids that share corners with four equivalent N(4)Ni4Ru trigonal bipyramids, corners with two equivalent N(2)Ni3Ru trigonal pyramids,  an edgeedge with one N(1)Ni4Ru trigonal bipyramid, and  an edgeedge with one N(4)Ni4Ru trigonal bipyramid. In the second N site, N(2) is bonded to one Ru(1), one Ni(1), and two equivalent Ni(2) atoms to form NNi3Ru trigonal pyramids that share corners with two equivalent N(1)Ni4Ru trigonal bipyramids, corners with two equivalent N(4)Ni4Ru trigonal bipyramids, and  an edgeedge with one N(2)Ni3Ru trigonal pyramid. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Ru(1), one Ni(1), and two equivalent Ni(2) atoms. In the fourth N site, N(4) is bonded to one Ru(1), one Ni(1), one Ni(4), and two equivalent Ni(3) atoms to form NNi4Ru trigonal bipyramids that share corners with four equivalent N(1)Ni4Ru trigonal bipyramids, corners with two equivalent N(2)Ni3Ru trigonal pyramids,  an edgeedge with one N(1)Ni4Ru trigonal bipyramid, and  an edgeedge with one N(4)Ni4Ru trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ni4RuN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.773
_cell_length_b   4.727
_cell_length_c   8.981
_cell_angle_alpha   70.044
_cell_angle_beta   95.402
_cell_angle_gamma   79.624
_symmetry_Int_Tables_number   1
_cell_volume   184.638
_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
  Ni  Ni0  1  0.799  0.618  0.201  1.0
  Ni  Ni1  1  0.201  0.382  0.799  1.0
  Ni  Ni2  1  0.706  0.190  0.986  1.0
  Ni  Ni3  1  0.294  0.810  0.014  1.0
  Ni  Ni4  1  0.673  0.541  0.597  1.0
  Ni  Ni5  1  0.327  0.459  0.403  1.0
  Ni  Ni6  1  0.124  0.087  0.591  1.0
  Ni  Ni7  1  0.876  0.913  0.409  1.0
  Ru  Ru8  1  0.657  0.896  0.781  1.0
  Ru  Ru9  1  0.343  0.104  0.219  1.0
  N  N10  1  0.927  0.763  0.654  1.0
  N  N11  1  0.073  0.237  0.346  1.0
  N  N12  1  0.894  0.803  0.992  1.0
  N  N13  1  0.106  0.197  0.008  1.0
  N  N14  1  0.439  0.599  0.878  1.0
  N  N15  1  0.561  0.401  0.122  1.0
  N  N16  1  0.602  0.708  0.361  1.0
  N  N17  1  0.398  0.292  0.639  1.0
[/CIF]
.