The structure described by Sr8RuRh3O16 crystallizes in the tetragonal I-4 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1); four equivalent O(3,4); and four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(2); two equivalent O(5); and four equivalent O(3,4) atoms. In the third Sr site, Sr(3,4) is bonded in a 7-coordinate geometry to one O(3,4); two equivalent O(1); two equivalent O(2); and two equivalent O(6) atoms. Ru(1) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form RuO6 octahedra that share corners with four equivalent Rh(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form RhO6 octahedra that share corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. In the second Rh site, Rh(2,3) is bonded to two equivalent O(3,4) and four equivalent O(5) atoms to form corner-sharing RhO6 octahedra. The corner-sharing octahedral tilt angles are 23°. There are five inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one Sr(2); two equivalent Sr(1); and two equivalent Rh(2,3) atoms. In the second O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Sr(3,4); one Ru(1); and one Rh(1) atom. In the third O site, O(1) is bonded to one Sr(1); four equivalent Sr(3,4); and one Ru(1) atom to form OSr5Ru octahedra that share corners with five equivalent O(1)Sr5Ru octahedra; edges with four equivalent O(2)Sr5Rh octahedra; and edges with four equivalent O(3,4)Sr5Rh octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth O site, O(2) is bonded to one Sr(2); four equivalent Sr(3,4); and one Rh(1) atom to form OSr5Rh octahedra that share corners with five equivalent O(2)Sr5Rh octahedra; edges with four equivalent O(3,4)Sr5Rh octahedra; and edges with four equivalent O(1)Sr5Ru octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the fifth O site, O(3,4) is bonded to one Sr(3,4); two equivalent Sr(1); two equivalent Sr(2); and one Rh(2,3) atom to form OSr5Rh octahedra that share corners with five equivalent O(3,4)Sr5Rh octahedra; edges with two equivalent O(2)Sr5Rh octahedra; edges with two equivalent O(1)Sr5Ru octahedra; and edges with four equivalent O(3,4)Sr5Rh octahedra. The corner-sharing octahedral tilt angles range from 0-8°. is represented by the CIF file [CIF]
data_Sr8RuRh3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.600
_cell_length_b   13.600
_cell_length_c   13.600
_cell_angle_alpha   156.550
_cell_angle_beta   156.550
_cell_angle_gamma   33.404
_symmetry_Int_Tables_number   1
_cell_volume   397.964
_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  0.926  0.426  0.500  1.0
  Sr  Sr1  1  0.426  0.926  0.500  1.0
  Sr  Sr2  1  0.325  0.325  0.000  1.0
  Sr  Sr3  1  0.825  0.825  0.000  1.0
  Sr  Sr4  1  0.574  0.074  0.500  1.0
  Sr  Sr5  1  0.074  0.574  0.500  1.0
  Sr  Sr6  1  0.675  0.675  0.000  1.0
  Sr  Sr7  1  0.175  0.175  0.000  1.0
  Ru  Ru8  1  0.750  0.250  0.500  1.0
  Rh  Rh9  1  0.250  0.750  0.500  1.0
  Rh  Rh10  1  0.500  0.500  0.000  1.0
  Rh  Rh11  1  0.000  0.000  0.000  1.0
  O  O12  1  0.829  0.329  0.500  1.0
  O  O13  1  0.331  0.831  0.500  1.0
  O  O14  1  0.419  0.419  0.000  1.0
  O  O15  1  0.919  0.919  0.000  1.0
  O  O16  1  0.671  0.171  0.500  1.0
  O  O17  1  0.169  0.669  0.500  1.0
  O  O18  1  0.581  0.581  0.000  1.0
  O  O19  1  0.081  0.081  0.000  1.0
  O  O20  1  0.301  0.199  0.500  1.0
  O  O21  1  0.199  0.699  0.897  1.0
  O  O22  1  0.552  0.956  0.008  1.0
  O  O23  1  0.456  0.448  0.404  1.0
  O  O24  1  0.699  0.801  0.500  1.0
  O  O25  1  0.801  0.301  0.103  1.0
  O  O26  1  0.948  0.544  0.992  1.0
  O  O27  1  0.044  0.052  0.596  1.0
[/CIF]
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The structure described by Sr8RuRh3O16 crystallizes in the tetragonal I-4 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1); four equivalent O(3,4); and four equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(2); two equivalent O(5); and four equivalent O(3,4) atoms. In the third Sr site, Sr(3,4) is bonded in a 7-coordinate geometry to one O(3,4); two equivalent O(1); two equivalent O(2); and two equivalent O(6) atoms. Ru(1) is bonded to two equivalent O(1) and four equivalent O(6) atoms to form RuO6 octahedra that share corners with four equivalent Rh(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded to two equivalent O(2) and four equivalent O(6) atoms to form RhO6 octahedra that share corners with four equivalent Ru(1)O6 octahedra. The corner-sharing octahedral tilt angles are 22°. In the second Rh site, Rh(2,3) is bonded to two equivalent O(3,4) and four equivalent O(5) atoms to form corner-sharing RhO6 octahedra. The corner-sharing octahedral tilt angles are 23°. There are five inequivalent O sites. In the first O site, O(5) is bonded in a 4-coordinate geometry to one Sr(2); two equivalent Sr(1); and two equivalent Rh(2,3) atoms. In the second O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Sr(3,4); one Ru(1); and one Rh(1) atom. In the third O site, O(1) is bonded to one Sr(1); four equivalent Sr(3,4); and one Ru(1) atom to form OSr5Ru octahedra that share corners with five equivalent O(1)Sr5Ru octahedra; edges with four equivalent O(2)Sr5Rh octahedra; and edges with four equivalent O(3,4)Sr5Rh octahedra. The corner-sharing octahedral tilt angles range from 0-5°. In the fourth O site, O(2) is bonded to one Sr(2); four equivalent Sr(3,4); and one Rh(1) atom to form OSr5Rh octahedra that share corners with five equivalent O(2)Sr5Rh octahedra; edges with four equivalent O(3,4)Sr5Rh octahedra; and edges with four equivalent O(1)Sr5Ru octahedra. The corner-sharing octahedral tilt angles range from 0-6°. In the fifth O site, O(3,4) is bonded to one Sr(3,4); two equivalent Sr(1); two equivalent Sr(2); and one Rh(2,3) atom to form OSr5Rh octahedra that share corners with five equivalent O(3,4)Sr5Rh octahedra; edges with two equivalent O(2)Sr5Rh octahedra; edges with two equivalent O(1)Sr5Ru octahedra; and edges with four equivalent O(3,4)Sr5Rh octahedra. The corner-sharing octahedral tilt angles range from 0-8°. is represented by the CIF file [CIF]
data_Sr8RuRh3O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.600
_cell_length_b   13.600
_cell_length_c   13.600
_cell_angle_alpha   156.550
_cell_angle_beta   156.550
_cell_angle_gamma   33.404
_symmetry_Int_Tables_number   1
_cell_volume   397.964
_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  0.926  0.426  0.500  1.0
  Sr  Sr1  1  0.426  0.926  0.500  1.0
  Sr  Sr2  1  0.325  0.325  0.000  1.0
  Sr  Sr3  1  0.825  0.825  0.000  1.0
  Sr  Sr4  1  0.574  0.074  0.500  1.0
  Sr  Sr5  1  0.074  0.574  0.500  1.0
  Sr  Sr6  1  0.675  0.675  0.000  1.0
  Sr  Sr7  1  0.175  0.175  0.000  1.0
  Ru  Ru8  1  0.750  0.250  0.500  1.0
  Rh  Rh9  1  0.250  0.750  0.500  1.0
  Rh  Rh10  1  0.500  0.500  0.000  1.0
  Rh  Rh11  1  0.000  0.000  0.000  1.0
  O  O12  1  0.829  0.329  0.500  1.0
  O  O13  1  0.331  0.831  0.500  1.0
  O  O14  1  0.419  0.419  0.000  1.0
  O  O15  1  0.919  0.919  0.000  1.0
  O  O16  1  0.671  0.171  0.500  1.0
  O  O17  1  0.169  0.669  0.500  1.0
  O  O18  1  0.581  0.581  0.000  1.0
  O  O19  1  0.081  0.081  0.000  1.0
  O  O20  1  0.301  0.199  0.500  1.0
  O  O21  1  0.199  0.699  0.897  1.0
  O  O22  1  0.552  0.956  0.008  1.0
  O  O23  1  0.456  0.448  0.404  1.0
  O  O24  1  0.699  0.801  0.500  1.0
  O  O25  1  0.801  0.301  0.103  1.0
  O  O26  1  0.948  0.544  0.992  1.0
  O  O27  1  0.044  0.052  0.596  1.0
[/CIF]
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