The crystal structure described by MgRu8Zn2Bi6O27 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(16), one O(18), one O(26), and one O(8) atom. There are eight inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(10), one O(16), one O(19), one O(21), one O(3), and one O(8) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(4)O6 octahedra, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 43-55°. In the second Ru site, Ru(2) is bonded to one O(15), one O(20), one O(22), one O(4), one O(7), and one O(9) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(3)O6 octahedra,  an edgeedge with one Bi(5)O8 hexagonal bipyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 44-53°. In the third Ru site, Ru(3) is bonded to one O(11), one O(15), one O(18), one O(24), one O(4), and one O(5) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(2)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-54°. In the fourth Ru site, Ru(4) is bonded to one O(12), one O(16), one O(17), one O(23), one O(3), and one O(6) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(1)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid,  an edgeedge with one Bi(5)O8 hexagonal bipyramid, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 39-60°. In the fifth Ru site, Ru(5) is bonded to one O(1), one O(12), one O(13), one O(20), one O(24), and one O(8) atom to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles range from 39-53°. In the sixth Ru site, Ru(6) is bonded to one O(11), one O(14), one O(19), one O(2), one O(23), and one O(7) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(8)O6 octahedra, edges with two equivalent Bi(5)O8 hexagonal bipyramids, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 41-57°. In the seventh Ru site, Ru(7) is bonded to one O(1), one O(10), one O(13), one O(18), one O(22), and one O(6) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(5)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 39-60°. In the eighth Ru site, Ru(8) is bonded to one O(14), one O(17), one O(2), one O(21), one O(5), and one O(9) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(6)O6 octahedra, and  a cornercorner with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-57°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(2), one O(23), one O(25), and one O(6) atom to form ZnO4 trigonal pyramids that share  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid,  an edgeedge with one Bi(5)O8 hexagonal bipyramid,  an edgeedge with one Ru(4)O6 octahedra, and  an edgeedge with one Ru(6)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second Zn site, Zn(2) is bonded to one O(22), one O(26), one O(4), and one O(6) atom to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid,  an edgeedge with one Ru(2)O6 octahedra, and  an edgeedge with one Ru(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(24), one O(26), one O(27), and one O(5) atom. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(19), one O(2), one O(21), one O(25), and one O(8) atom. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one O(1), one O(14), one O(20), one O(22), one O(26), one O(27), one O(7), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one O(15), one O(17), one O(21), one O(25), one O(27), one O(3), and one O(9) atom. In the fifth Bi site, Bi(5) is bonded to one O(11), one O(15), one O(19), one O(23), one O(25), one O(27), one O(3), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, edges with two equivalent Ru(6)O6 octahedra, and  an edgeedge with one Zn(1)O4 trigonal pyramid. In the sixth Bi site, Bi(6) is bonded in a 4-coordinate geometry to one O(12), one O(20), one O(24), one O(26), and one O(4) atom. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(5), one Ru(7), and one Bi(3) atom. In the second O site, O(2) is bonded to one Ru(6), one Ru(8), one Zn(1), and one Bi(2) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the third O site, O(3) is bonded to one Ru(1), one Ru(4), one Bi(4), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra,  an edgeedge with one O(27)Bi4 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the fourth O site, O(4) is bonded to one Ru(2), one Ru(3), one Zn(2), and one Bi(6) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(26)MgZnBi3 trigonal bipyramids,  an edgeedge with one O(20)Bi2Ru2 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Ru(3), one Ru(8), and one Bi(1) atom. In the sixth O site, O(6) is bonded to one Ru(4), one Ru(7), one Zn(1), and one Zn(2) atom to form distorted OZn2Ru2 tetrahedra that share  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  a cornercorner with one O(2)ZnBiRu2 tetrahedra,  a cornercorner with one O(4)ZnBiRu2 tetrahedra,  a cornercorner with one O(26)MgZnBi3 trigonal bipyramid,  an edgeedge with one O(22)ZnBiRu2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the seventh O site, O(7) is bonded to one Ru(2), one Ru(6), one Bi(3), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  a cornercorner with one O(2)ZnBiRu2 tetrahedra,  a cornercorner with one O(4)ZnBiRu2 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra, corners with two equivalent O(20)Bi2Ru2 tetrahedra,  a cornercorner with one O(26)MgZnBi3 trigonal bipyramid,  an edgeedge with one O(27)Bi4 tetrahedra,  an edgeedge with one O(22)ZnBiRu2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(1), one Ru(5), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(8), one Bi(3), and one Bi(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(1), one Ru(7), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Ru(3), one Ru(6), one Bi(1), and one Bi(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ru(4), one Ru(5), and one Bi(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Ru(5), one Ru(7), and one Bi(2) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ru(6), one Ru(8), one Bi(1), and one Bi(3) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(4), and one Bi(5) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(1), and one Ru(4) atom. In the seventeenth O site, O(17) is bonded in a trigonal non-coplanar geometry to one Ru(4), one Ru(8), and one Bi(4) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(3), and one Ru(7) atom. In the nineteenth O site, O(19) is bonded to one Ru(1), one Ru(6), one Bi(2), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(21)Bi2Ru2 tetrahedra, corners with two equivalent O(7)Bi2Ru2 tetrahedra, corners with two equivalent O(23)ZnBiRu2 trigonal pyramids,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twentieth O site, O(20) is bonded to one Ru(2), one Ru(5), one Bi(3), and one Bi(6) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(7)Bi2Ru2 tetrahedra, corners with two equivalent O(22)ZnBiRu2 tetrahedra,  an edgeedge with one O(4)ZnBiRu2 tetrahedra, and  an edgeedge with one O(26)MgZnBi3 trigonal bipyramid. In the twenty-first O site, O(21) is bonded to one Ru(1), one Ru(8), one Bi(2), and one Bi(4) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twenty-second O site, O(22) is bonded to one Ru(2), one Ru(7), one Zn(2), and one Bi(3) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(20)Bi2Ru2 tetrahedra,  an edgeedge with one O(7)Bi2Ru2 tetrahedra,  an edgeedge with one O(6)Zn2Ru2 tetrahedra,  an edgeedge with one O(4)ZnBiRu2 tetrahedra, and  an edgeedge with one O(26)MgZnBi3 trigonal bipyramid. In the twenty-third O site, O(23) is bonded to one Ru(4), one Ru(6), one Zn(1), and one Bi(5) atom to form distorted OZnBiRu2 trigonal pyramids that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(7)Bi2Ru2 tetrahedra,  an edgeedge with one O(6)Zn2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Ru(3), one Ru(5), one Bi(1), and one Bi(6) atom. In the twenty-fifth O site, O(25) is bonded to one Zn(1), one Bi(2), one Bi(4), and one Bi(5) atom to form distorted OZnBi3 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(3)Bi2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra, corners with two equivalent O(2)ZnBiRu2 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded to one Mg(1), one Zn(2), one Bi(1), one Bi(3), and one Bi(6) atom to form distorted OMgZnBi3 trigonal bipyramids that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra, corners with two equivalent O(4)ZnBiRu2 tetrahedra,  an edgeedge with one O(20)Bi2Ru2 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the twenty-seventh O site, O(27) is bonded to one Bi(1), one Bi(3), one Bi(4), and one Bi(5) atom to form OBi4 tetrahedra that share  a cornercorner with one O(19)Bi2Ru2 tetrahedra,  a cornercorner with one O(20)Bi2Ru2 tetrahedra,  a cornercorner with one O(21)Bi2Ru2 tetrahedra,  a cornercorner with one O(22)ZnBiRu2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra, corners with two equivalent O(26)MgZnBi3 trigonal bipyramids,  a cornercorner with one O(23)ZnBiRu2 trigonal pyramid,  an edgeedge with one O(3)Bi2Ru2 tetrahedra, and  an edgeedge with one O(7)Bi2Ru2 tetrahedra. is represented by the CIF file [CIF]
data_MgZn2Bi6Ru8O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.297
_cell_length_b   10.396
_cell_length_c   7.349
_cell_angle_alpha   91.085
_cell_angle_beta   90.153
_cell_angle_gamma   90.031
_symmetry_Int_Tables_number   1
_cell_volume   557.361
_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
  Mg  Mg0  1  0.194  0.013  0.285  1.0
  Zn  Zn1  1  0.817  0.271  0.722  1.0
  Zn  Zn2  1  0.971  0.975  0.576  1.0
  Bi  Bi3  1  0.285  0.729  0.271  1.0
  Bi  Bi4  1  0.763  0.246  0.247  1.0
  Bi  Bi5  1  0.243  0.759  0.761  1.0
  Bi  Bi6  1  0.505  0.480  0.974  1.0
  Bi  Bi7  1  0.999  0.498  0.990  1.0
  Bi  Bi8  1  0.529  0.008  0.537  1.0
  Ru  Ru9  1  0.252  0.265  0.242  1.0
  Ru  Ru10  1  0.749  0.744  0.755  1.0
  Ru  Ru11  1  0.761  0.758  0.253  1.0
  Ru  Ru12  1  0.245  0.249  0.735  1.0
  Ru  Ru13  1  0.493  1.000  0.002  1.0
  Ru  Ru14  1  0.001  0.504  0.494  1.0
  Ru  Ru15  1  0.982  0.003  0.991  1.0
  Ru  Ru16  1  0.508  0.494  0.500  1.0
  O  O17  1  0.241  0.923  0.004  1.0
  O  O18  1  0.757  0.407  0.506  1.0
  O  O19  1  0.252  0.337  0.990  1.0
  O  O20  1  0.758  0.840  0.509  1.0
  O  O21  1  0.558  0.628  0.308  1.0
  O  O22  1  0.008  0.124  0.762  1.0
  O  O23  1  0.958  0.624  0.707  1.0
  O  O24  1  0.430  0.118  0.207  1.0
  O  O25  1  0.560  0.615  0.702  1.0
  O  O26  1  0.036  0.147  0.177  1.0
  O  O27  1  0.946  0.629  0.306  1.0
  O  O28  1  0.417  0.108  0.795  1.0
  O  O29  1  0.737  0.060  0.018  1.0
  O  O30  1  0.257  0.574  0.495  1.0
  O  O31  1  0.756  0.680  0.004  1.0
  O  O32  1  0.248  0.182  0.484  1.0
  O  O33  1  0.451  0.369  0.698  1.0
  O  O34  1  0.958  0.891  0.214  1.0
  O  O35  1  0.038  0.384  0.281  1.0
  O  O36  1  0.542  0.873  0.790  1.0
  O  O37  1  0.466  0.379  0.280  1.0
  O  O38  1  0.958  0.865  0.803  1.0
  O  O39  1  0.055  0.383  0.700  1.0
  O  O40  1  0.536  0.873  0.212  1.0
  O  O41  1  0.759  0.341  0.978  1.0
  O  O42  1  0.244  0.907  0.502  1.0
  O  O43  1  0.260  0.624  0.000  1.0
[/CIF]
.
The crystal structure described by MgRu8Zn2Bi6O27 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(16), one O(18), one O(26), and one O(8) atom. There are eight inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(10), one O(16), one O(19), one O(21), one O(3), and one O(8) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(4)O6 octahedra, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 43-55°. In the second Ru site, Ru(2) is bonded to one O(15), one O(20), one O(22), one O(4), one O(7), and one O(9) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(3)O6 octahedra,  an edgeedge with one Bi(5)O8 hexagonal bipyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 44-53°. In the third Ru site, Ru(3) is bonded to one O(11), one O(15), one O(18), one O(24), one O(4), and one O(5) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(2)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 41-54°. In the fourth Ru site, Ru(4) is bonded to one O(12), one O(16), one O(17), one O(23), one O(3), and one O(6) atom to form RuO6 octahedra that share  a cornercorner with one Ru(5)O6 octahedra,  a cornercorner with one Ru(6)O6 octahedra,  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra, corners with two equivalent Ru(1)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid,  an edgeedge with one Bi(5)O8 hexagonal bipyramid, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 39-60°. In the fifth Ru site, Ru(5) is bonded to one O(1), one O(12), one O(13), one O(20), one O(24), and one O(8) atom to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles range from 39-53°. In the sixth Ru site, Ru(6) is bonded to one O(11), one O(14), one O(19), one O(2), one O(23), and one O(7) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(8)O6 octahedra, edges with two equivalent Bi(5)O8 hexagonal bipyramids, and  an edgeedge with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 41-57°. In the seventh Ru site, Ru(7) is bonded to one O(1), one O(10), one O(13), one O(18), one O(22), and one O(6) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(5)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid, and  an edgeedge with one Zn(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 39-60°. In the eighth Ru site, Ru(8) is bonded to one O(14), one O(17), one O(2), one O(21), one O(5), and one O(9) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(2)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with two equivalent Ru(6)O6 octahedra, and  a cornercorner with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-57°. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(2), one O(23), one O(25), and one O(6) atom to form ZnO4 trigonal pyramids that share  a cornercorner with one Ru(7)O6 octahedra,  a cornercorner with one Ru(8)O6 octahedra,  a cornercorner with one Zn(2)O4 trigonal pyramid,  an edgeedge with one Bi(5)O8 hexagonal bipyramid,  an edgeedge with one Ru(4)O6 octahedra, and  an edgeedge with one Ru(6)O6 octahedra. The corner-sharing octahedral tilt angles are 61°. In the second Zn site, Zn(2) is bonded to one O(22), one O(26), one O(4), and one O(6) atom to form distorted ZnO4 trigonal pyramids that share  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra,  a cornercorner with one Zn(1)O4 trigonal pyramid,  an edgeedge with one Ru(2)O6 octahedra, and  an edgeedge with one Ru(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 61-63°. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 6-coordinate geometry to one O(11), one O(14), one O(24), one O(26), one O(27), and one O(5) atom. In the second Bi site, Bi(2) is bonded in a 7-coordinate geometry to one O(10), one O(13), one O(19), one O(2), one O(21), one O(25), and one O(8) atom. In the third Bi site, Bi(3) is bonded in a 8-coordinate geometry to one O(1), one O(14), one O(20), one O(22), one O(26), one O(27), one O(7), and one O(9) atom. In the fourth Bi site, Bi(4) is bonded in a 7-coordinate geometry to one O(15), one O(17), one O(21), one O(25), one O(27), one O(3), and one O(9) atom. In the fifth Bi site, Bi(5) is bonded to one O(11), one O(15), one O(19), one O(23), one O(25), one O(27), one O(3), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, edges with two equivalent Ru(6)O6 octahedra, and  an edgeedge with one Zn(1)O4 trigonal pyramid. In the sixth Bi site, Bi(6) is bonded in a 4-coordinate geometry to one O(12), one O(20), one O(24), one O(26), and one O(4) atom. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(5), one Ru(7), and one Bi(3) atom. In the second O site, O(2) is bonded to one Ru(6), one Ru(8), one Zn(1), and one Bi(2) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the third O site, O(3) is bonded to one Ru(1), one Ru(4), one Bi(4), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra,  an edgeedge with one O(27)Bi4 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the fourth O site, O(4) is bonded to one Ru(2), one Ru(3), one Zn(2), and one Bi(6) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(26)MgZnBi3 trigonal bipyramids,  an edgeedge with one O(20)Bi2Ru2 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Ru(3), one Ru(8), and one Bi(1) atom. In the sixth O site, O(6) is bonded to one Ru(4), one Ru(7), one Zn(1), and one Zn(2) atom to form distorted OZn2Ru2 tetrahedra that share  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  a cornercorner with one O(2)ZnBiRu2 tetrahedra,  a cornercorner with one O(4)ZnBiRu2 tetrahedra,  a cornercorner with one O(26)MgZnBi3 trigonal bipyramid,  an edgeedge with one O(22)ZnBiRu2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the seventh O site, O(7) is bonded to one Ru(2), one Ru(6), one Bi(3), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  a cornercorner with one O(2)ZnBiRu2 tetrahedra,  a cornercorner with one O(4)ZnBiRu2 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra, corners with two equivalent O(20)Bi2Ru2 tetrahedra,  a cornercorner with one O(26)MgZnBi3 trigonal bipyramid,  an edgeedge with one O(27)Bi4 tetrahedra,  an edgeedge with one O(22)ZnBiRu2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(1), one Ru(5), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(8), one Bi(3), and one Bi(4) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(1), one Ru(7), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Ru(3), one Ru(6), one Bi(1), and one Bi(5) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one Ru(4), one Ru(5), and one Bi(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Ru(5), one Ru(7), and one Bi(2) atom. In the fourteenth O site, O(14) is bonded in a 4-coordinate geometry to one Ru(6), one Ru(8), one Bi(1), and one Bi(3) atom. In the fifteenth O site, O(15) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(4), and one Bi(5) atom. In the sixteenth O site, O(16) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(1), and one Ru(4) atom. In the seventeenth O site, O(17) is bonded in a trigonal non-coplanar geometry to one Ru(4), one Ru(8), and one Bi(4) atom. In the eighteenth O site, O(18) is bonded in a 3-coordinate geometry to one Mg(1), one Ru(3), and one Ru(7) atom. In the nineteenth O site, O(19) is bonded to one Ru(1), one Ru(6), one Bi(2), and one Bi(5) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(21)Bi2Ru2 tetrahedra, corners with two equivalent O(7)Bi2Ru2 tetrahedra, corners with two equivalent O(23)ZnBiRu2 trigonal pyramids,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twentieth O site, O(20) is bonded to one Ru(2), one Ru(5), one Bi(3), and one Bi(6) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(7)Bi2Ru2 tetrahedra, corners with two equivalent O(22)ZnBiRu2 tetrahedra,  an edgeedge with one O(4)ZnBiRu2 tetrahedra, and  an edgeedge with one O(26)MgZnBi3 trigonal bipyramid. In the twenty-first O site, O(21) is bonded to one Ru(1), one Ru(8), one Bi(2), and one Bi(4) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twenty-second O site, O(22) is bonded to one Ru(2), one Ru(7), one Zn(2), and one Bi(3) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(20)Bi2Ru2 tetrahedra,  an edgeedge with one O(7)Bi2Ru2 tetrahedra,  an edgeedge with one O(6)Zn2Ru2 tetrahedra,  an edgeedge with one O(4)ZnBiRu2 tetrahedra, and  an edgeedge with one O(26)MgZnBi3 trigonal bipyramid. In the twenty-third O site, O(23) is bonded to one Ru(4), one Ru(6), one Zn(1), and one Bi(5) atom to form distorted OZnBiRu2 trigonal pyramids that share  a cornercorner with one O(27)Bi4 tetrahedra, corners with two equivalent O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(3)Bi2Ru2 tetrahedra,  an edgeedge with one O(7)Bi2Ru2 tetrahedra,  an edgeedge with one O(6)Zn2Ru2 tetrahedra,  an edgeedge with one O(25)ZnBi3 tetrahedra, and  an edgeedge with one O(2)ZnBiRu2 tetrahedra. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Ru(3), one Ru(5), one Bi(1), and one Bi(6) atom. In the twenty-fifth O site, O(25) is bonded to one Zn(1), one Bi(2), one Bi(4), and one Bi(5) atom to form distorted OZnBi3 tetrahedra that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(3)Bi2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra, corners with two equivalent O(2)ZnBiRu2 tetrahedra,  an edgeedge with one O(19)Bi2Ru2 tetrahedra,  an edgeedge with one O(21)Bi2Ru2 tetrahedra, and  an edgeedge with one O(23)ZnBiRu2 trigonal pyramid. In the twenty-sixth O site, O(26) is bonded to one Mg(1), one Zn(2), one Bi(1), one Bi(3), and one Bi(6) atom to form distorted OMgZnBi3 trigonal bipyramids that share  a cornercorner with one O(7)Bi2Ru2 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra, corners with two equivalent O(4)ZnBiRu2 tetrahedra,  an edgeedge with one O(20)Bi2Ru2 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the twenty-seventh O site, O(27) is bonded to one Bi(1), one Bi(3), one Bi(4), and one Bi(5) atom to form OBi4 tetrahedra that share  a cornercorner with one O(19)Bi2Ru2 tetrahedra,  a cornercorner with one O(20)Bi2Ru2 tetrahedra,  a cornercorner with one O(21)Bi2Ru2 tetrahedra,  a cornercorner with one O(22)ZnBiRu2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra, corners with two equivalent O(26)MgZnBi3 trigonal bipyramids,  a cornercorner with one O(23)ZnBiRu2 trigonal pyramid,  an edgeedge with one O(3)Bi2Ru2 tetrahedra, and  an edgeedge with one O(7)Bi2Ru2 tetrahedra. is represented by the CIF file [CIF]
data_MgZn2Bi6Ru8O27
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.297
_cell_length_b   10.396
_cell_length_c   7.349
_cell_angle_alpha   91.085
_cell_angle_beta   90.153
_cell_angle_gamma   90.031
_symmetry_Int_Tables_number   1
_cell_volume   557.361
_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
  Mg  Mg0  1  0.194  0.013  0.285  1.0
  Zn  Zn1  1  0.817  0.271  0.722  1.0
  Zn  Zn2  1  0.971  0.975  0.576  1.0
  Bi  Bi3  1  0.285  0.729  0.271  1.0
  Bi  Bi4  1  0.763  0.246  0.247  1.0
  Bi  Bi5  1  0.243  0.759  0.761  1.0
  Bi  Bi6  1  0.505  0.480  0.974  1.0
  Bi  Bi7  1  0.999  0.498  0.990  1.0
  Bi  Bi8  1  0.529  0.008  0.537  1.0
  Ru  Ru9  1  0.252  0.265  0.242  1.0
  Ru  Ru10  1  0.749  0.744  0.755  1.0
  Ru  Ru11  1  0.761  0.758  0.253  1.0
  Ru  Ru12  1  0.245  0.249  0.735  1.0
  Ru  Ru13  1  0.493  1.000  0.002  1.0
  Ru  Ru14  1  0.001  0.504  0.494  1.0
  Ru  Ru15  1  0.982  0.003  0.991  1.0
  Ru  Ru16  1  0.508  0.494  0.500  1.0
  O  O17  1  0.241  0.923  0.004  1.0
  O  O18  1  0.757  0.407  0.506  1.0
  O  O19  1  0.252  0.337  0.990  1.0
  O  O20  1  0.758  0.840  0.509  1.0
  O  O21  1  0.558  0.628  0.308  1.0
  O  O22  1  0.008  0.124  0.762  1.0
  O  O23  1  0.958  0.624  0.707  1.0
  O  O24  1  0.430  0.118  0.207  1.0
  O  O25  1  0.560  0.615  0.702  1.0
  O  O26  1  0.036  0.147  0.177  1.0
  O  O27  1  0.946  0.629  0.306  1.0
  O  O28  1  0.417  0.108  0.795  1.0
  O  O29  1  0.737  0.060  0.018  1.0
  O  O30  1  0.257  0.574  0.495  1.0
  O  O31  1  0.756  0.680  0.004  1.0
  O  O32  1  0.248  0.182  0.484  1.0
  O  O33  1  0.451  0.369  0.698  1.0
  O  O34  1  0.958  0.891  0.214  1.0
  O  O35  1  0.038  0.384  0.281  1.0
  O  O36  1  0.542  0.873  0.790  1.0
  O  O37  1  0.466  0.379  0.280  1.0
  O  O38  1  0.958  0.865  0.803  1.0
  O  O39  1  0.055  0.383  0.700  1.0
  O  O40  1  0.536  0.873  0.212  1.0
  O  O41  1  0.759  0.341  0.978  1.0
  O  O42  1  0.244  0.907  0.502  1.0
  O  O43  1  0.260  0.624  0.000  1.0
[/CIF]
.