Ru8Zn2Bi6O27 is Esseneite-like structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(1), one O(12), one O(13), one O(6), one O(8), 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, corners with three equivalent Ru(4)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, and edges with three equivalent Bi(2)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 39-52°. In the second Ru site, Ru(2) is bonded to one O(10), one O(12), one O(14), one O(2), one O(5), 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(4)O6 octahedra, corners with three equivalent Ru(3)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid, edges with three equivalent Bi(3)O8 hexagonal bipyramids, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 44-53°. In the third Ru site, Ru(3) is bonded to one O(10), one O(11), one O(13), one O(2), one O(3), and one O(7) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with three equivalent Ru(2)O6 octahedra,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, edges with three equivalent Bi(1)O8 hexagonal bipyramids, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 43-53°. In the fourth Ru site, Ru(4) is bonded to one O(1), one O(11), one O(14), one O(4), one O(8), and one O(9) atom to form RuO6 octahedra that share  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 three equivalent Ru(1)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 39-53°. Zn(1) is bonded in a 3-coordinate geometry to one O(14), one O(15), one O(2), and one O(4) atom. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), one O(16), one O(3), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Bi(1)O8 hexagonal bipyramid, edges with three equivalent Bi(3)O8 hexagonal bipyramids,  an edgeedge with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(3)O6 octahedra. In the second Bi site, Bi(2) is bonded to one O(12), one O(13), one O(15), one O(2), one O(6), one O(8), and one O(9) atom to form distorted BiO7 hexagonal pyramids that share  a cornercorner with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(1)O6 octahedra. In the third Bi site, Bi(3) is bonded to one O(1), one O(10), one O(12), one O(14), one O(15), one O(16), one O(5), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Bi(3)O8 hexagonal bipyramid, edges with three equivalent Bi(1)O8 hexagonal bipyramids,  an edgeedge with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(2)O6 octahedra. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Ru(1), one Ru(4), one Bi(1), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(5)Bi2Ru2 tetrahedra,  a cornercorner with one O(4)Zn2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra,  an edgeedge with one O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(13)Bi2Ru2 tetrahedra,  an edgeedge with one O(16)Bi4 tetrahedra, and  an edgeedge with one O(14)ZnBiRu2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Zn(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ru(3) and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded to two equivalent Ru(4) and two equivalent Zn(1) atoms to form OZn2Ru2 tetrahedra that share corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra, and edges with two equivalent O(14)ZnBiRu2 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Ru(2) and two equivalent Bi(3) atoms to form distorted OBi2Ru2 tetrahedra that share corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra, corners with four equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(16)Bi4 tetrahedra, and edges with two equivalent O(14)ZnBiRu2 tetrahedra. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Ru(1) and two equivalent Bi(2) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(1), and one Bi(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ru(1), one Ru(4), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Ru(1), one Ru(4), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(1), and one Bi(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Ru(3), one Ru(4), and one Bi(1) atom. In the twelfth O site, O(12) is bonded to one Ru(1), one Ru(2), one Bi(2), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(13)Bi2Ru2 tetrahedra, corners with two equivalent O(5)Bi2Ru2 tetrahedra, corners with two equivalent O(14)ZnBiRu2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the thirteenth O site, O(13) is bonded to one Ru(1), one Ru(3), one Bi(1), and one Bi(2) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the fourteenth O site, O(14) is bonded to one Ru(2), one Ru(4), one Zn(1), and one Bi(3) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra,  an edgeedge with one O(5)Bi2Ru2 tetrahedra,  an edgeedge with one O(4)Zn2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the fifteenth O site, O(15) is bonded to one Zn(1), one Bi(1), one Bi(2), and one Bi(3) atom to form distorted OZnBi3 tetrahedra that share  a cornercorner with one O(5)Bi2Ru2 tetrahedra,  a cornercorner with one O(4)Zn2Ru2 tetrahedra, corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(16)Bi4 tetrahedra,  an edgeedge with one O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(13)Bi2Ru2 tetrahedra, and  an edgeedge with one O(14)ZnBiRu2 tetrahedra. In the sixteenth O site, O(16) is bonded to two equivalent Bi(1) and two equivalent Bi(3) atoms to form OBi4 tetrahedra that share corners with two equivalent O(12)Bi2Ru2 tetrahedra, corners with two equivalent O(13)Bi2Ru2 tetrahedra, corners with two equivalent O(14)ZnBiRu2 tetrahedra, corners with four equivalent O(15)ZnBi3 tetrahedra,  an edgeedge with one O(5)Bi2Ru2 tetrahedra, and edges with two equivalent O(1)Bi2Ru2 tetrahedra.
Ru8Zn2Bi6O27 is Esseneite-like structured and crystallizes in the monoclinic C2 space group. There are four inequivalent Ru sites. In the first Ru site, Ru(1) is bonded to one O(1), one O(12), one O(13), one O(6), one O(8), 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, corners with three equivalent Ru(4)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, and edges with three equivalent Bi(2)O7 hexagonal pyramids. The corner-sharing octahedral tilt angles range from 39-52°. The Ru(1)-O(1) bond length is 2.03 Å. The Ru(1)-O(12) bond length is 2.04 Å. The Ru(1)-O(13) bond length is 2.02 Å. The Ru(1)-O(6) bond length is 1.95 Å. The Ru(1)-O(8) bond length is 1.98 Å. The Ru(1)-O(9) bond length is 1.91 Å. In the second Ru site, Ru(2) is bonded to one O(10), one O(12), one O(14), one O(2), one O(5), 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(4)O6 octahedra, corners with three equivalent Ru(3)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid, edges with three equivalent Bi(3)O8 hexagonal bipyramids, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 44-53°. The Ru(2)-O(10) bond length is 1.97 Å. The Ru(2)-O(12) bond length is 2.01 Å. The Ru(2)-O(14) bond length is 2.04 Å. The Ru(2)-O(2) bond length is 2.02 Å. The Ru(2)-O(5) bond length is 1.99 Å. The Ru(2)-O(7) bond length is 1.96 Å. In the third Ru site, Ru(3) is bonded to one O(10), one O(11), one O(13), one O(2), one O(3), and one O(7) atom to form RuO6 octahedra that share  a cornercorner with one Ru(1)O6 octahedra,  a cornercorner with one Ru(3)O6 octahedra,  a cornercorner with one Ru(4)O6 octahedra, corners with three equivalent Ru(2)O6 octahedra,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, edges with three equivalent Bi(1)O8 hexagonal bipyramids, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 43-53°. The Ru(3)-O(10) bond length is 1.97 Å. The Ru(3)-O(11) bond length is 2.02 Å. The Ru(3)-O(13) bond length is 2.02 Å. The Ru(3)-O(2) bond length is 2.02 Å. The Ru(3)-O(3) bond length is 1.96 Å. The Ru(3)-O(7) bond length is 1.97 Å. In the fourth Ru site, Ru(4) is bonded to one O(1), one O(11), one O(14), one O(4), one O(8), and one O(9) atom to form RuO6 octahedra that share  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 three equivalent Ru(1)O6 octahedra,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid, and  an edgeedge with one Bi(2)O7 hexagonal pyramid. The corner-sharing octahedral tilt angles range from 39-53°. The Ru(4)-O(1) bond length is 2.03 Å. The Ru(4)-O(11) bond length is 1.96 Å. The Ru(4)-O(14) bond length is 2.02 Å. The Ru(4)-O(4) bond length is 2.10 Å. The Ru(4)-O(8) bond length is 1.97 Å. The Ru(4)-O(9) bond length is 1.92 Å. Zn(1) is bonded in a 3-coordinate geometry to one O(14), one O(15), one O(2), and one O(4) atom. The Zn(1)-O(14) bond length is 2.16 Å. The Zn(1)-O(15) bond length is 2.01 Å. The Zn(1)-O(2) bond length is 2.57 Å. The Zn(1)-O(4) bond length is 2.07 Å. There are three inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to one O(1), one O(10), one O(11), one O(13), one O(15), one O(16), one O(3), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Bi(1)O8 hexagonal bipyramid, edges with three equivalent Bi(3)O8 hexagonal bipyramids,  an edgeedge with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(3)O6 octahedra. The Bi(1)-O(1) bond length is 2.44 Å. The Bi(1)-O(10) bond length is 2.67 Å. The Bi(1)-O(11) bond length is 2.36 Å. The Bi(1)-O(13) bond length is 2.49 Å. The Bi(1)-O(15) bond length is 2.36 Å. The Bi(1)-O(16) bond length is 2.31 Å. The Bi(1)-O(3) bond length is 2.70 Å. The Bi(1)-O(7) bond length is 2.58 Å. In the second Bi site, Bi(2) is bonded to one O(12), one O(13), one O(15), one O(2), one O(6), one O(8), and one O(9) atom to form distorted BiO7 hexagonal pyramids that share  a cornercorner with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Bi(1)O8 hexagonal bipyramid,  an edgeedge with one Bi(3)O8 hexagonal bipyramid,  an edgeedge with one Ru(2)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(1)O6 octahedra. The Bi(2)-O(12) bond length is 2.41 Å. The Bi(2)-O(13) bond length is 2.57 Å. The Bi(2)-O(15) bond length is 2.23 Å. The Bi(2)-O(2) bond length is 2.43 Å. The Bi(2)-O(6) bond length is 2.65 Å. The Bi(2)-O(8) bond length is 2.41 Å. The Bi(2)-O(9) bond length is 2.63 Å. In the third Bi site, Bi(3) is bonded to one O(1), one O(10), one O(12), one O(14), one O(15), one O(16), one O(5), and one O(7) atom to form distorted BiO8 hexagonal bipyramids that share  an edgeedge with one Bi(3)O8 hexagonal bipyramid, edges with three equivalent Bi(1)O8 hexagonal bipyramids,  an edgeedge with one Bi(2)O7 hexagonal pyramid,  an edgeedge with one Ru(1)O6 octahedra,  an edgeedge with one Ru(3)O6 octahedra,  an edgeedge with one Ru(4)O6 octahedra, and edges with three equivalent Ru(2)O6 octahedra. The Bi(3)-O(1) bond length is 2.45 Å. The Bi(3)-O(10) bond length is 2.62 Å. The Bi(3)-O(12) bond length is 2.51 Å. The Bi(3)-O(14) bond length is 2.41 Å. The Bi(3)-O(15) bond length is 2.39 Å. The Bi(3)-O(16) bond length is 2.28 Å. The Bi(3)-O(5) bond length is 2.53 Å. The Bi(3)-O(7) bond length is 2.64 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to one Ru(1), one Ru(4), one Bi(1), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(5)Bi2Ru2 tetrahedra,  a cornercorner with one O(4)Zn2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra,  an edgeedge with one O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(13)Bi2Ru2 tetrahedra,  an edgeedge with one O(16)Bi4 tetrahedra, and  an edgeedge with one O(14)ZnBiRu2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Zn(1), and one Bi(2) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ru(3) and two equivalent Bi(1) atoms. In the fourth O site, O(4) is bonded to two equivalent Ru(4) and two equivalent Zn(1) atoms to form OZn2Ru2 tetrahedra that share corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra, and edges with two equivalent O(14)ZnBiRu2 tetrahedra. In the fifth O site, O(5) is bonded to two equivalent Ru(2) and two equivalent Bi(3) atoms to form distorted OBi2Ru2 tetrahedra that share corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(15)ZnBi3 tetrahedra, corners with four equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(16)Bi4 tetrahedra, and edges with two equivalent O(14)ZnBiRu2 tetrahedra. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to two equivalent Ru(1) and two equivalent Bi(2) atoms. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(1), and one Bi(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Ru(1), one Ru(4), and one Bi(2) atom. In the ninth O site, O(9) is bonded in a distorted bent 150 degrees geometry to one Ru(1), one Ru(4), and one Bi(2) atom. In the tenth O site, O(10) is bonded in a 4-coordinate geometry to one Ru(2), one Ru(3), one Bi(1), and one Bi(3) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Ru(3), one Ru(4), and one Bi(1) atom. In the twelfth O site, O(12) is bonded to one Ru(1), one Ru(2), one Bi(2), and one Bi(3) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(13)Bi2Ru2 tetrahedra, corners with two equivalent O(5)Bi2Ru2 tetrahedra, corners with two equivalent O(14)ZnBiRu2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the thirteenth O site, O(13) is bonded to one Ru(1), one Ru(3), one Bi(1), and one Bi(2) atom to form distorted OBi2Ru2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the fourteenth O site, O(14) is bonded to one Ru(2), one Ru(4), one Zn(1), and one Bi(3) atom to form distorted OZnBiRu2 tetrahedra that share  a cornercorner with one O(16)Bi4 tetrahedra, corners with two equivalent O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(1)Bi2Ru2 tetrahedra,  an edgeedge with one O(5)Bi2Ru2 tetrahedra,  an edgeedge with one O(4)Zn2Ru2 tetrahedra, and  an edgeedge with one O(15)ZnBi3 tetrahedra. In the fifteenth O site, O(15) is bonded to one Zn(1), one Bi(1), one Bi(2), and one Bi(3) atom to form distorted OZnBi3 tetrahedra that share  a cornercorner with one O(5)Bi2Ru2 tetrahedra,  a cornercorner with one O(4)Zn2Ru2 tetrahedra, corners with two equivalent O(1)Bi2Ru2 tetrahedra, corners with two equivalent O(16)Bi4 tetrahedra,  an edgeedge with one O(12)Bi2Ru2 tetrahedra,  an edgeedge with one O(13)Bi2Ru2 tetrahedra, and  an edgeedge with one O(14)ZnBiRu2 tetrahedra. In the sixteenth O site, O(16) is bonded to two equivalent Bi(1) and two equivalent Bi(3) atoms to form OBi4 tetrahedra that share corners with two equivalent O(12)Bi2Ru2 tetrahedra, corners with two equivalent O(13)Bi2Ru2 tetrahedra, corners with two equivalent O(14)ZnBiRu2 tetrahedra, corners with four equivalent O(15)ZnBi3 tetrahedra,  an edgeedge with one O(5)Bi2Ru2 tetrahedra, and edges with two equivalent O(1)Bi2Ru2 tetrahedra.