The structure described by Ru4CN4 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a rectangular see-saw-like geometry to one N(1), one N(3), and two equivalent N(2) atoms. In the second Ru site, Ru(2) is bonded in a distorted square co-planar geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ru site, Ru(3) is bonded to one C(1), two equivalent N(1), and two equivalent N(4) atoms to form distorted RuCN4 trigonal bipyramids that share  a cornercorner with one N(3)Ru3C tetrahedra and edges with two equivalent Ru(3)CN4 trigonal bipyramids. In the fourth Ru site, Ru(4) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. C(1) is bonded in a distorted trigonal planar geometry to one Ru(3), one N(3), and one N(4) atom. There are four inequivalent N sites. In the first N site, N(4) is bonded in a 3-coordinate geometry to two equivalent Ru(3) and one C(1) atom. In the second N site, N(1) is bonded to one Ru(1), two equivalent Ru(3), and two equivalent Ru(4) atoms to form distorted NRu5 trigonal bipyramids that share  a cornercorner with one N(3)Ru3C tetrahedra, corners with four equivalent N(2)Ru5 trigonal bipyramids, and edges with two equivalent N(1)Ru5 trigonal bipyramids. In the third N site, N(2) is bonded to one Ru(4), two equivalent Ru(1), and two equivalent Ru(2) atoms to form distorted NRu5 trigonal bipyramids that share corners with four equivalent N(3)Ru3C tetrahedra, corners with four equivalent N(1)Ru5 trigonal bipyramids,  an edgeedge with one N(3)Ru3C tetrahedra, and edges with two equivalent N(2)Ru5 trigonal bipyramids. In the fourth N site, N(3) is bonded to one Ru(1), two equivalent Ru(2), and one C(1) atom to form distorted NRu3C tetrahedra that share corners with two equivalent N(3)Ru3C tetrahedra,  a cornercorner with one Ru(3)CN4 trigonal bipyramid,  a cornercorner with one N(1)Ru5 trigonal bipyramid, corners with four equivalent N(2)Ru5 trigonal bipyramids, and  an edgeedge with one N(2)Ru5 trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ru4CN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.076
_cell_length_b   2.762
_cell_length_c   14.442
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   401.992
_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
  Ru  Ru0  1  0.141  0.250  0.154  1.0
  Ru  Ru1  1  0.641  0.250  0.346  1.0
  Ru  Ru2  1  0.859  0.750  0.846  1.0
  Ru  Ru3  1  0.359  0.750  0.654  1.0
  Ru  Ru4  1  0.906  0.250  0.059  1.0
  Ru  Ru5  1  0.406  0.250  0.441  1.0
  Ru  Ru6  1  0.094  0.750  0.941  1.0
  Ru  Ru7  1  0.594  0.750  0.559  1.0
  Ru  Ru8  1  0.444  0.250  0.884  1.0
  Ru  Ru9  1  0.944  0.250  0.616  1.0
  Ru  Ru10  1  0.556  0.750  0.116  1.0
  Ru  Ru11  1  0.056  0.750  0.384  1.0
  Ru  Ru12  1  0.205  0.250  0.803  1.0
  Ru  Ru13  1  0.705  0.250  0.697  1.0
  Ru  Ru14  1  0.795  0.750  0.197  1.0
  Ru  Ru15  1  0.295  0.750  0.303  1.0
  C  C16  1  0.347  0.250  0.003  1.0
  C  C17  1  0.847  0.250  0.497  1.0
  C  C18  1  0.653  0.750  0.997  1.0
  C  C19  1  0.153  0.750  0.503  1.0
  N  N20  1  0.652  0.250  0.212  1.0
  N  N21  1  0.152  0.250  0.288  1.0
  N  N22  1  0.348  0.750  0.788  1.0
  N  N23  1  0.848  0.750  0.712  1.0
  N  N24  1  0.012  0.250  0.845  1.0
  N  N25  1  0.512  0.250  0.655  1.0
  N  N26  1  0.988  0.750  0.155  1.0
  N  N27  1  0.488  0.750  0.345  1.0
  N  N28  1  0.215  0.250  0.016  1.0
  N  N29  1  0.715  0.250  0.484  1.0
  N  N30  1  0.785  0.750  0.984  1.0
  N  N31  1  0.285  0.750  0.516  1.0
  N  N32  1  0.426  0.250  0.079  1.0
  N  N33  1  0.926  0.250  0.421  1.0
  N  N34  1  0.574  0.750  0.921  1.0
  N  N35  1  0.074  0.750  0.579  1.0
[/CIF]
.
The structure described by Ru4CN4 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Ru sites. In the first Ru site, Ru(1) is bonded in a rectangular see-saw-like geometry to one N(1), one N(3), and two equivalent N(2) atoms. In the second Ru site, Ru(2) is bonded in a distorted square co-planar geometry to two equivalent N(2) and two equivalent N(3) atoms. In the third Ru site, Ru(3) is bonded to one C(1), two equivalent N(1), and two equivalent N(4) atoms to form distorted RuCN4 trigonal bipyramids that share  a cornercorner with one N(3)Ru3C tetrahedra and edges with two equivalent Ru(3)CN4 trigonal bipyramids. In the fourth Ru site, Ru(4) is bonded in a 3-coordinate geometry to one N(2) and two equivalent N(1) atoms. C(1) is bonded in a distorted trigonal planar geometry to one Ru(3), one N(3), and one N(4) atom. There are four inequivalent N sites. In the first N site, N(4) is bonded in a 3-coordinate geometry to two equivalent Ru(3) and one C(1) atom. In the second N site, N(1) is bonded to one Ru(1), two equivalent Ru(3), and two equivalent Ru(4) atoms to form distorted NRu5 trigonal bipyramids that share  a cornercorner with one N(3)Ru3C tetrahedra, corners with four equivalent N(2)Ru5 trigonal bipyramids, and edges with two equivalent N(1)Ru5 trigonal bipyramids. In the third N site, N(2) is bonded to one Ru(4), two equivalent Ru(1), and two equivalent Ru(2) atoms to form distorted NRu5 trigonal bipyramids that share corners with four equivalent N(3)Ru3C tetrahedra, corners with four equivalent N(1)Ru5 trigonal bipyramids,  an edgeedge with one N(3)Ru3C tetrahedra, and edges with two equivalent N(2)Ru5 trigonal bipyramids. In the fourth N site, N(3) is bonded to one Ru(1), two equivalent Ru(2), and one C(1) atom to form distorted NRu3C tetrahedra that share corners with two equivalent N(3)Ru3C tetrahedra,  a cornercorner with one Ru(3)CN4 trigonal bipyramid,  a cornercorner with one N(1)Ru5 trigonal bipyramid, corners with four equivalent N(2)Ru5 trigonal bipyramids, and  an edgeedge with one N(2)Ru5 trigonal bipyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ru4CN4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.076
_cell_length_b   2.762
_cell_length_c   14.442
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   401.992
_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
  Ru  Ru0  1  0.141  0.250  0.154  1.0
  Ru  Ru1  1  0.641  0.250  0.346  1.0
  Ru  Ru2  1  0.859  0.750  0.846  1.0
  Ru  Ru3  1  0.359  0.750  0.654  1.0
  Ru  Ru4  1  0.906  0.250  0.059  1.0
  Ru  Ru5  1  0.406  0.250  0.441  1.0
  Ru  Ru6  1  0.094  0.750  0.941  1.0
  Ru  Ru7  1  0.594  0.750  0.559  1.0
  Ru  Ru8  1  0.444  0.250  0.884  1.0
  Ru  Ru9  1  0.944  0.250  0.616  1.0
  Ru  Ru10  1  0.556  0.750  0.116  1.0
  Ru  Ru11  1  0.056  0.750  0.384  1.0
  Ru  Ru12  1  0.205  0.250  0.803  1.0
  Ru  Ru13  1  0.705  0.250  0.697  1.0
  Ru  Ru14  1  0.795  0.750  0.197  1.0
  Ru  Ru15  1  0.295  0.750  0.303  1.0
  C  C16  1  0.347  0.250  0.003  1.0
  C  C17  1  0.847  0.250  0.497  1.0
  C  C18  1  0.653  0.750  0.997  1.0
  C  C19  1  0.153  0.750  0.503  1.0
  N  N20  1  0.652  0.250  0.212  1.0
  N  N21  1  0.152  0.250  0.288  1.0
  N  N22  1  0.348  0.750  0.788  1.0
  N  N23  1  0.848  0.750  0.712  1.0
  N  N24  1  0.012  0.250  0.845  1.0
  N  N25  1  0.512  0.250  0.655  1.0
  N  N26  1  0.988  0.750  0.155  1.0
  N  N27  1  0.488  0.750  0.345  1.0
  N  N28  1  0.215  0.250  0.016  1.0
  N  N29  1  0.715  0.250  0.484  1.0
  N  N30  1  0.785  0.750  0.984  1.0
  N  N31  1  0.285  0.750  0.516  1.0
  N  N32  1  0.426  0.250  0.079  1.0
  N  N33  1  0.926  0.250  0.421  1.0
  N  N34  1  0.574  0.750  0.921  1.0
  N  N35  1  0.074  0.750  0.579  1.0
[/CIF]
.