The structure described by Sr2MgRuNiO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one O(4) and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Ru(1), one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Mg(1) is bonded in a distorted trigonal planar geometry to one O(4) and two equivalent O(2) atoms. Ru(1) is bonded in a trigonal planar geometry to one Sr(2), one O(3), and two equivalent O(1) atoms. Ni(1) is bonded in a distorted square pyramidal geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(2), one Ru(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Sr(2), one Mg(1), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(2) and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Sr(2), one Mg(1), and one Ni(1) atom. is represented by the CIF file [CIF]
data_Sr2MgNiRuO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.006
_cell_length_b   6.006
_cell_length_c   6.165
_cell_angle_alpha   66.828
_cell_angle_beta   66.828
_cell_angle_gamma   60.025
_symmetry_Int_Tables_number   1
_cell_volume   171.575
_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
  Sr  Sr0  1  0.179  0.179  0.462  1.0
  Sr  Sr1  1  0.805  0.805  0.698  1.0
  Mg  Mg2  1  0.413  0.413  0.786  1.0
  Ni  Ni3  1  0.009  0.009  0.997  1.0
  Ru  Ru4  1  0.567  0.567  0.267  1.0
  O  O5  1  0.742  0.217  0.274  1.0
  O  O6  1  0.773  0.206  0.773  1.0
  O  O7  1  0.732  0.732  0.293  1.0
  O  O8  1  0.206  0.773  0.773  1.0
  O  O9  1  0.217  0.742  0.274  1.0
  O  O10  1  0.226  0.226  0.807  1.0
[/CIF]
.
The structure described by Sr2MgRuNiO6 crystallizes in the monoclinic Cm space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one O(4) and two equivalent O(2) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Ru(1), one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Mg(1) is bonded in a distorted trigonal planar geometry to one O(4) and two equivalent O(2) atoms. Ru(1) is bonded in a trigonal planar geometry to one Sr(2), one O(3), and two equivalent O(1) atoms. Ni(1) is bonded in a distorted square pyramidal geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(2), one Ru(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Sr(2), one Mg(1), and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Sr(2) and one Ru(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Sr(1), two equivalent Sr(2), one Mg(1), and one Ni(1) atom. is represented by the CIF file [CIF]
data_Sr2MgNiRuO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.006
_cell_length_b   6.006
_cell_length_c   6.165
_cell_angle_alpha   66.828
_cell_angle_beta   66.828
_cell_angle_gamma   60.025
_symmetry_Int_Tables_number   1
_cell_volume   171.575
_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
  Sr  Sr0  1  0.179  0.179  0.462  1.0
  Sr  Sr1  1  0.805  0.805  0.698  1.0
  Mg  Mg2  1  0.413  0.413  0.786  1.0
  Ni  Ni3  1  0.009  0.009  0.997  1.0
  Ru  Ru4  1  0.567  0.567  0.267  1.0
  O  O5  1  0.742  0.217  0.274  1.0
  O  O6  1  0.773  0.206  0.773  1.0
  O  O7  1  0.732  0.732  0.293  1.0
  O  O8  1  0.206  0.773  0.773  1.0
  O  O9  1  0.217  0.742  0.274  1.0
  O  O10  1  0.226  0.226  0.807  1.0
[/CIF]
.