MgRu8Zn2Bi6O27 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(24), one O(26), one O(4), one O(5), and one O(9) 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 43-52°. 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 distorted 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, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 45-53°. 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, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-53°. 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,  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 38-62°. 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 38-50°. 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 45-52°. 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, and  a cornercorner with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-62°. 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 39-52°. 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,  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 range from 59-61°. In the second Zn site, Zn(2) is bonded in a distorted T-shaped geometry to one O(22), one O(4), and one O(6) atom. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(14), one O(18), one O(24), one O(26), and one O(27) 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 6-coordinate geometry to one O(1), one O(20), one O(22), one O(26), one O(27), and one O(7) atom. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(15), one O(17), one O(21), one O(25), one O(27), one O(3), one O(5), 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(16), one O(26), and one O(8) atom. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded to one Ru(5), one Ru(7), one Bi(1), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid, corners with two equivalent O(26)MgBi3 trigonal pyramids,  an edgeedge with one O(27)Bi4 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ru(6), one Ru(8), one Zn(1), and one Bi(2) atom. 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 corners with two equivalent O(25)ZnBi3 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid,  an edgeedge with one O(19)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 in a distorted rectangular see-saw-like geometry to one Mg(1), one Ru(2), one Ru(3), and one Zn(2) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Ru(3), one Ru(8), and one Bi(4) 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 trigonal pyramids that share  a cornercorner with one O(1)Bi2Ru2 tetrahedra,  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  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 in a 4-coordinate geometry to one Ru(2), one Ru(6), one Bi(3), and one Bi(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ru(1), one Ru(5), one Bi(2), and one Bi(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(2), one Ru(8), and one Bi(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ru(1), one Ru(7), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 4-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 distorted trigonal non-coplanar geometry to one Ru(5), one Ru(7), and one Bi(2) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Ru(6), one Ru(8), and one Bi(1) 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 trigonal non-coplanar geometry to one Ru(1), one Ru(4), and one Bi(6) atom. In the seventeenth O site, O(17) is bonded in a distorted 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 distorted trigonal non-coplanar geometry to one Ru(3), one Ru(7), and one Bi(1) 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(23)ZnBiRu2 trigonal pyramids,  an edgeedge with one O(3)Bi2Ru2 tetrahedra, and  an edgeedge with one O(25)ZnBi3 tetrahedra. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Ru(2), one Ru(5), and one Bi(3) atom. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Ru(1), one Ru(8), one Bi(2), and one Bi(4) atom. 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 OZnBiRu2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra,  a cornercorner with one O(26)MgBi3 trigonal pyramid,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(6)Zn2Ru2 trigonal pyramid. 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(25)ZnBi3 tetrahedra, and  an edgeedge with one O(6)Zn2Ru2 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(3), one Ru(5), and one Bi(1) 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 OZnBi3 tetrahedra that share corners with two equivalent O(3)Bi2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid,  an edgeedge with one O(19)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 Bi(1), one Bi(3), and one Bi(6) atom to form OMgBi3 trigonal pyramids that share  a cornercorner with one O(22)ZnBiRu2 tetrahedra, corners with two equivalent O(1)Bi2Ru2 tetrahedra, and corners with two equivalent O(27)Bi4 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(22)ZnBiRu2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  a cornercorner with one O(23)ZnBiRu2 trigonal pyramid, corners with two equivalent O(26)MgBi3 trigonal pyramids,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(3)Bi2Ru2 tetrahedra.
MgRu8Zn2Bi6O27 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(24), one O(26), one O(4), one O(5), and one O(9) atom. The Mg(1)-O(24) bond length is 2.52 Å. The Mg(1)-O(26) bond length is 2.03 Å. The Mg(1)-O(4) bond length is 2.00 Å. The Mg(1)-O(5) bond length is 2.02 Å. The Mg(1)-O(9) bond length is 2.08 Å. 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 43-52°. The Ru(1)-O(10) bond length is 1.98 Å. The Ru(1)-O(16) bond length is 2.00 Å. The Ru(1)-O(19) bond length is 2.05 Å. The Ru(1)-O(21) bond length is 1.98 Å. The Ru(1)-O(3) bond length is 2.00 Å. The Ru(1)-O(8) bond length is 2.00 Å. 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 distorted 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, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 45-53°. The Ru(2)-O(15) bond length is 1.96 Å. The Ru(2)-O(20) bond length is 2.02 Å. The Ru(2)-O(22) bond length is 2.00 Å. The Ru(2)-O(4) bond length is 2.13 Å. The Ru(2)-O(7) bond length is 1.98 Å. The Ru(2)-O(9) bond length is 2.06 Å. 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, and  an edgeedge with one Bi(5)O8 hexagonal bipyramid. The corner-sharing octahedral tilt angles range from 39-53°. The Ru(3)-O(11) bond length is 1.99 Å. The Ru(3)-O(15) bond length is 1.96 Å. The Ru(3)-O(18) bond length is 1.98 Å. The Ru(3)-O(24) bond length is 2.01 Å. The Ru(3)-O(4) bond length is 2.15 Å. The Ru(3)-O(5) bond length is 2.04 Å. 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,  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 38-62°. The Ru(4)-O(12) bond length is 1.98 Å. The Ru(4)-O(16) bond length is 2.00 Å. The Ru(4)-O(17) bond length is 1.97 Å. The Ru(4)-O(23) bond length is 1.97 Å. The Ru(4)-O(3) bond length is 2.02 Å. The Ru(4)-O(6) bond length is 2.16 Å. 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 38-50°. The Ru(5)-O(1) bond length is 2.05 Å. The Ru(5)-O(12) bond length is 2.02 Å. The Ru(5)-O(13) bond length is 1.95 Å. The Ru(5)-O(20) bond length is 2.02 Å. The Ru(5)-O(24) bond length is 1.96 Å. The Ru(5)-O(8) bond length is 2.01 Å. 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 45-52°. The Ru(6)-O(11) bond length is 2.01 Å. The Ru(6)-O(14) bond length is 1.97 Å. The Ru(6)-O(19) bond length is 2.02 Å. The Ru(6)-O(2) bond length is 2.11 Å. The Ru(6)-O(23) bond length is 2.00 Å. The Ru(6)-O(7) bond length is 2.00 Å. 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, and  a cornercorner with one Zn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 43-62°. The Ru(7)-O(1) bond length is 2.08 Å. The Ru(7)-O(10) bond length is 1.94 Å. The Ru(7)-O(13) bond length is 1.98 Å. The Ru(7)-O(18) bond length is 1.95 Å. The Ru(7)-O(22) bond length is 2.00 Å. The Ru(7)-O(6) bond length is 2.13 Å. 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 39-52°. The Ru(8)-O(14) bond length is 1.99 Å. The Ru(8)-O(17) bond length is 2.01 Å. The Ru(8)-O(2) bond length is 2.06 Å. The Ru(8)-O(21) bond length is 1.98 Å. The Ru(8)-O(5) bond length is 2.04 Å. The Ru(8)-O(9) bond length is 2.05 Å. 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,  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 range from 59-61°. The Zn(1)-O(2) bond length is 2.11 Å. The Zn(1)-O(23) bond length is 2.11 Å. The Zn(1)-O(25) bond length is 2.06 Å. The Zn(1)-O(6) bond length is 2.14 Å. In the second Zn site, Zn(2) is bonded in a distorted T-shaped geometry to one O(22), one O(4), and one O(6) atom. The Zn(2)-O(22) bond length is 2.09 Å. The Zn(2)-O(4) bond length is 2.07 Å. The Zn(2)-O(6) bond length is 2.06 Å. There are six inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 7-coordinate geometry to one O(1), one O(11), one O(14), one O(18), one O(24), one O(26), and one O(27) atom. The Bi(1)-O(1) bond length is 2.40 Å. The Bi(1)-O(11) bond length is 2.42 Å. The Bi(1)-O(14) bond length is 2.77 Å. The Bi(1)-O(18) bond length is 2.28 Å. The Bi(1)-O(24) bond length is 2.72 Å. The Bi(1)-O(26) bond length is 2.37 Å. The Bi(1)-O(27) bond length is 2.28 Å. 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. The Bi(2)-O(10) bond length is 2.32 Å. The Bi(2)-O(13) bond length is 2.37 Å. The Bi(2)-O(19) bond length is 2.50 Å. The Bi(2)-O(2) bond length is 2.69 Å. The Bi(2)-O(21) bond length is 2.72 Å. The Bi(2)-O(25) bond length is 2.23 Å. The Bi(2)-O(8) bond length is 2.71 Å. In the third Bi site, Bi(3) is bonded in a 6-coordinate geometry to one O(1), one O(20), one O(22), one O(26), one O(27), and one O(7) atom. The Bi(3)-O(1) bond length is 2.36 Å. The Bi(3)-O(20) bond length is 2.68 Å. The Bi(3)-O(22) bond length is 2.32 Å. The Bi(3)-O(26) bond length is 2.38 Å. The Bi(3)-O(27) bond length is 2.27 Å. The Bi(3)-O(7) bond length is 2.47 Å. In the fourth Bi site, Bi(4) is bonded in a 8-coordinate geometry to one O(15), one O(17), one O(21), one O(25), one O(27), one O(3), one O(5), and one O(9) atom. The Bi(4)-O(15) bond length is 2.57 Å. The Bi(4)-O(17) bond length is 2.39 Å. The Bi(4)-O(21) bond length is 2.61 Å. The Bi(4)-O(25) bond length is 2.37 Å. The Bi(4)-O(27) bond length is 2.34 Å. The Bi(4)-O(3) bond length is 2.49 Å. The Bi(4)-O(5) bond length is 2.80 Å. The Bi(4)-O(9) bond length is 2.53 Å. 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. The Bi(5)-O(11) bond length is 2.60 Å. The Bi(5)-O(15) bond length is 2.61 Å. The Bi(5)-O(19) bond length is 2.44 Å. The Bi(5)-O(23) bond length is 2.47 Å. The Bi(5)-O(25) bond length is 2.36 Å. The Bi(5)-O(27) bond length is 2.31 Å. The Bi(5)-O(3) bond length is 2.41 Å. The Bi(5)-O(7) bond length is 2.64 Å. In the sixth Bi site, Bi(6) is bonded in a 4-coordinate geometry to one O(12), one O(16), one O(26), and one O(8) atom. The Bi(6)-O(12) bond length is 2.26 Å. The Bi(6)-O(16) bond length is 2.20 Å. The Bi(6)-O(26) bond length is 2.21 Å. The Bi(6)-O(8) bond length is 2.45 Å. There are twenty-seven inequivalent O sites. In the first O site, O(1) is bonded to one Ru(5), one Ru(7), one Bi(1), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid, corners with two equivalent O(26)MgBi3 trigonal pyramids,  an edgeedge with one O(27)Bi4 tetrahedra, and  an edgeedge with one O(22)ZnBiRu2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ru(6), one Ru(8), one Zn(1), and one Bi(2) atom. 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 corners with two equivalent O(25)ZnBi3 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid,  an edgeedge with one O(19)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 in a distorted rectangular see-saw-like geometry to one Mg(1), one Ru(2), one Ru(3), and one Zn(2) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Ru(3), one Ru(8), and one Bi(4) 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 trigonal pyramids that share  a cornercorner with one O(1)Bi2Ru2 tetrahedra,  a cornercorner with one O(3)Bi2Ru2 tetrahedra,  a cornercorner with one O(25)ZnBi3 tetrahedra,  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 in a 4-coordinate geometry to one Ru(2), one Ru(6), one Bi(3), and one Bi(5) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ru(1), one Ru(5), one Bi(2), and one Bi(6) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(2), one Ru(8), and one Bi(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one Ru(1), one Ru(7), and one Bi(2) atom. In the eleventh O site, O(11) is bonded in a 4-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 distorted trigonal non-coplanar geometry to one Ru(5), one Ru(7), and one Bi(2) atom. In the fourteenth O site, O(14) is bonded in a 2-coordinate geometry to one Ru(6), one Ru(8), and one Bi(1) 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 trigonal non-coplanar geometry to one Ru(1), one Ru(4), and one Bi(6) atom. In the seventeenth O site, O(17) is bonded in a distorted 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 distorted trigonal non-coplanar geometry to one Ru(3), one Ru(7), and one Bi(1) 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(23)ZnBiRu2 trigonal pyramids,  an edgeedge with one O(3)Bi2Ru2 tetrahedra, and  an edgeedge with one O(25)ZnBi3 tetrahedra. In the twentieth O site, O(20) is bonded in a 2-coordinate geometry to one Ru(2), one Ru(5), and one Bi(3) atom. In the twenty-first O site, O(21) is bonded in a 4-coordinate geometry to one Ru(1), one Ru(8), one Bi(2), and one Bi(4) atom. 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 OZnBiRu2 tetrahedra that share  a cornercorner with one O(27)Bi4 tetrahedra,  a cornercorner with one O(26)MgBi3 trigonal pyramid,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(6)Zn2Ru2 trigonal pyramid. 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(25)ZnBi3 tetrahedra, and  an edgeedge with one O(6)Zn2Ru2 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded in a 4-coordinate geometry to one Mg(1), one Ru(3), one Ru(5), and one Bi(1) 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 OZnBi3 tetrahedra that share corners with two equivalent O(3)Bi2Ru2 tetrahedra, corners with two equivalent O(27)Bi4 tetrahedra,  a cornercorner with one O(6)Zn2Ru2 trigonal pyramid,  an edgeedge with one O(19)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 Bi(1), one Bi(3), and one Bi(6) atom to form OMgBi3 trigonal pyramids that share  a cornercorner with one O(22)ZnBiRu2 tetrahedra, corners with two equivalent O(1)Bi2Ru2 tetrahedra, and corners with two equivalent O(27)Bi4 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(22)ZnBiRu2 tetrahedra, corners with two equivalent O(25)ZnBi3 tetrahedra,  a cornercorner with one O(23)ZnBiRu2 trigonal pyramid, corners with two equivalent O(26)MgBi3 trigonal pyramids,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(3)Bi2Ru2 tetrahedra.