The structure described by SrMg(RuO3)2 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. Mg(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form distorted MgO4 trigonal pyramids that share corners with four equivalent Ru(1)O6 octahedra and edges with two equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-59°. Ru(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted RuO6 octahedra that share corners with two equivalent Mg(1)O4 trigonal pyramids, edges with three equivalent Ru(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms. In the second O site, O(2) is bonded to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms to form a mixture of distorted corner and edge-sharing OSrMgRu2 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1) and two equivalent Ru(1) atoms. In the fourth O site, O(4) is bonded to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms to form a mixture of distorted corner and edge-sharing OSrMgRu2 tetrahedra. is represented by the CIF card [CIF]
data_SrMg(RuO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.477
_cell_length_b   5.617
_cell_length_c   5.320
_cell_angle_alpha   73.258
_cell_angle_beta   98.495
_cell_angle_gamma   120.852
_symmetry_Int_Tables_number   1
_cell_volume   134.553
_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  0.000  0.959  0.765  1.0
  Mg  Mg1  1  0.000  0.376  0.117  1.0
  Ru  Ru2  1  0.650  0.345  0.513  1.0
  Ru  Ru3  1  0.350  0.696  0.513  1.0
  O  O4  1  0.321  0.386  0.337  1.0
  O  O5  1  0.679  0.064  0.337  1.0
  O  O6  1  0.000  0.666  0.274  1.0
  O  O7  1  0.561  0.515  0.737  1.0
  O  O8  1  0.439  0.953  0.737  1.0
  O  O9  1  0.000  0.390  0.747  1.0
[/CIF]
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The structure described by SrMg(RuO3)2 crystallizes in the monoclinic Cm space group. Sr(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. Mg(1) is bonded to one O(2), one O(4), and two equivalent O(1) atoms to form distorted MgO4 trigonal pyramids that share corners with four equivalent Ru(1)O6 octahedra and edges with two equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 12-59°. Ru(1) is bonded to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms to form distorted RuO6 octahedra that share corners with two equivalent Mg(1)O4 trigonal pyramids, edges with three equivalent Ru(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms. In the second O site, O(2) is bonded to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms to form a mixture of distorted corner and edge-sharing OSrMgRu2 trigonal pyramids. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1) and two equivalent Ru(1) atoms. In the fourth O site, O(4) is bonded to one Sr(1), one Mg(1), and two equivalent Ru(1) atoms to form a mixture of distorted corner and edge-sharing OSrMgRu2 tetrahedra. is represented by the CIF card [CIF]
data_SrMg(RuO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.477
_cell_length_b   5.617
_cell_length_c   5.320
_cell_angle_alpha   73.258
_cell_angle_beta   98.495
_cell_angle_gamma   120.852
_symmetry_Int_Tables_number   1
_cell_volume   134.553
_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  0.000  0.959  0.765  1.0
  Mg  Mg1  1  0.000  0.376  0.117  1.0
  Ru  Ru2  1  0.650  0.345  0.513  1.0
  Ru  Ru3  1  0.350  0.696  0.513  1.0
  O  O4  1  0.321  0.386  0.337  1.0
  O  O5  1  0.679  0.064  0.337  1.0
  O  O6  1  0.000  0.666  0.274  1.0
  O  O7  1  0.561  0.515  0.737  1.0
  O  O8  1  0.439  0.953  0.737  1.0
  O  O9  1  0.000  0.390  0.747  1.0
[/CIF]
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