MgAg14(PbO3)6 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(13), one O(16), and one O(18) atom. There are fourteen inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to one O(1) and one O(3) atom. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(4) and one O(7) atom. In the third Ag site, Ag(3) is bonded in a linear geometry to one O(5) and one O(6) atom. In the fourth Ag site, Ag(4) is bonded in a linear geometry to one O(13) and one O(8) atom. In the fifth Ag site, Ag(5) is bonded in a distorted trigonal planar geometry to one O(18), one O(4), and one O(5) atom. In the sixth Ag site, Ag(6) is bonded in a trigonal planar geometry to one O(17), one O(6), and one O(7) atom. In the seventh Ag site, Ag(7) is bonded in a distorted single-bond geometry to one O(2) atom. In the eighth Ag site, Ag(8) is bonded in a distorted trigonal non-coplanar geometry to one O(16), one O(8), and one O(9) atom. In the ninth Ag site, Ag(9) is bonded in a distorted trigonal planar geometry to one O(10), one O(12), and one O(3) atom. In the tenth Ag site, Ag(10) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(14), and one O(15) atom. In the eleventh Ag site, Ag(11) is bonded in a linear geometry to one O(11) and one O(9) atom. In the twelfth Ag site, Ag(12) is bonded in a linear geometry to one O(12) and one O(15) atom. In the thirteenth Ag site, Ag(13) is bonded in a linear geometry to one O(17) and one O(18) atom. In the fourteenth Ag site, Ag(14) is bonded in a 3-coordinate geometry to one O(10), one O(16), and one O(2) atom. There are six inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(8) atom to form edge-sharing PbO6 octahedra. In the second Pb site, Pb(2) is bonded to one O(1), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form edge-sharing PbO6 octahedra. In the third Pb site, Pb(3) is bonded to one O(11), one O(14), one O(17), one O(3), one O(4), and one O(8) atom to form edge-sharing PbO6 octahedra. In the fourth Pb site, Pb(4) is bonded to one O(13), one O(15), one O(17), one O(3), one O(5), and one O(9) atom to form edge-sharing PbO6 octahedra. In the fifth Pb site, Pb(5) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(16), one O(18), and one O(7) atom. In the sixth Pb site, Pb(6) is bonded in a 4-coordinate geometry to one O(10), one O(15), one O(18), and one O(6) atom. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one Ag(1), one Ag(10), one Pb(1), and one Pb(2) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Ag(14), one Ag(7), one Pb(1), and one Pb(2) atom to form a mixture of distorted corner and edge-sharing OAg2Pb2 tetrahedra. In the third O site, O(3) is bonded to one Ag(1), one Ag(9), one Pb(3), and one Pb(4) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the fourth O site, O(4) is bonded to one Ag(2), one Ag(5), one Pb(1), and one Pb(3) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(8)Ag2Pb2 tetrahedra. In the fifth O site, O(5) is bonded to one Ag(3), one Ag(5), one Pb(2), and one Pb(4) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(12)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(9)Ag2Pb2 tetrahedra. In the sixth O site, O(6) is bonded to one Ag(3), one Ag(6), one Pb(1), and one Pb(6) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(8)Ag2Pb2 tetrahedra, and  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Ag(2), one Ag(6), one Pb(2), and one Pb(5) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(12)Ag2Pb2 tetrahedra. In the eighth O site, O(8) is bonded to one Ag(4), one Ag(8), one Pb(1), and one Pb(3) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the ninth O site, O(9) is bonded to one Ag(11), one Ag(8), one Pb(2), and one Pb(4) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Ag(14), one Ag(9), one Pb(1), and one Pb(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Mg(1), one Ag(11), one Pb(3), and one Pb(5) atom. In the twelfth O site, O(12) is bonded to one Ag(12), one Ag(9), one Pb(2), and one Pb(5) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(7)Ag2Pb2 tetrahedra. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mg(1), one Ag(4), and one Pb(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal non-coplanar geometry to one Ag(10), one Pb(3), and one Pb(5) atom. In the fifteenth O site, O(15) is bonded to one Ag(10), one Ag(12), one Pb(4), and one Pb(6) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(12)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra, and  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid. In the sixteenth O site, O(16) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ag(14), one Ag(8), and one Pb(5) atom. In the seventeenth O site, O(17) is bonded to one Ag(13), one Ag(6), one Pb(3), and one Pb(4) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(8)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(3)Ag2Pb2 tetrahedra. In the eighteenth O site, O(18) is bonded to one Mg(1), one Ag(13), one Ag(5), one Pb(5), and one Pb(6) atom to form distorted corner-sharing OMgAg2Pb2 trigonal bipyramids.
MgAg14(PbO3)6 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted rectangular see-saw-like geometry to one O(11), one O(13), one O(16), and one O(18) atom. The Mg(1)-O(11) bond length is 1.99 Å. The Mg(1)-O(13) bond length is 1.95 Å. The Mg(1)-O(16) bond length is 2.02 Å. The Mg(1)-O(18) bond length is 2.16 Å. There are fourteen inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to one O(1) and one O(3) atom. The Ag(1)-O(1) bond length is 2.13 Å. The Ag(1)-O(3) bond length is 2.12 Å. In the second Ag site, Ag(2) is bonded in a linear geometry to one O(4) and one O(7) atom. The Ag(2)-O(4) bond length is 2.13 Å. The Ag(2)-O(7) bond length is 2.15 Å. In the third Ag site, Ag(3) is bonded in a linear geometry to one O(5) and one O(6) atom. The Ag(3)-O(5) bond length is 2.15 Å. The Ag(3)-O(6) bond length is 2.16 Å. In the fourth Ag site, Ag(4) is bonded in a linear geometry to one O(13) and one O(8) atom. The Ag(4)-O(13) bond length is 2.14 Å. The Ag(4)-O(8) bond length is 2.16 Å. In the fifth Ag site, Ag(5) is bonded in a distorted trigonal planar geometry to one O(18), one O(4), and one O(5) atom. The Ag(5)-O(18) bond length is 2.53 Å. The Ag(5)-O(4) bond length is 2.45 Å. The Ag(5)-O(5) bond length is 2.36 Å. In the sixth Ag site, Ag(6) is bonded in a trigonal planar geometry to one O(17), one O(6), and one O(7) atom. The Ag(6)-O(17) bond length is 2.28 Å. The Ag(6)-O(6) bond length is 2.36 Å. The Ag(6)-O(7) bond length is 2.35 Å. In the seventh Ag site, Ag(7) is bonded in a distorted single-bond geometry to one O(2) atom. The Ag(7)-O(2) bond length is 2.21 Å. In the eighth Ag site, Ag(8) is bonded in a distorted trigonal non-coplanar geometry to one O(16), one O(8), and one O(9) atom. The Ag(8)-O(16) bond length is 2.39 Å. The Ag(8)-O(8) bond length is 2.38 Å. The Ag(8)-O(9) bond length is 2.33 Å. In the ninth Ag site, Ag(9) is bonded in a distorted trigonal planar geometry to one O(10), one O(12), and one O(3) atom. The Ag(9)-O(10) bond length is 2.25 Å. The Ag(9)-O(12) bond length is 2.43 Å. The Ag(9)-O(3) bond length is 2.28 Å. In the tenth Ag site, Ag(10) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(14), and one O(15) atom. The Ag(10)-O(1) bond length is 2.38 Å. The Ag(10)-O(14) bond length is 2.28 Å. The Ag(10)-O(15) bond length is 2.37 Å. In the eleventh Ag site, Ag(11) is bonded in a linear geometry to one O(11) and one O(9) atom. The Ag(11)-O(11) bond length is 2.15 Å. The Ag(11)-O(9) bond length is 2.16 Å. In the twelfth Ag site, Ag(12) is bonded in a linear geometry to one O(12) and one O(15) atom. The Ag(12)-O(12) bond length is 2.14 Å. The Ag(12)-O(15) bond length is 2.13 Å. In the thirteenth Ag site, Ag(13) is bonded in a linear geometry to one O(17) and one O(18) atom. The Ag(13)-O(17) bond length is 2.15 Å. The Ag(13)-O(18) bond length is 2.14 Å. In the fourteenth Ag site, Ag(14) is bonded in a 3-coordinate geometry to one O(10), one O(16), and one O(2) atom. The Ag(14)-O(10) bond length is 2.72 Å. The Ag(14)-O(16) bond length is 2.20 Å. The Ag(14)-O(2) bond length is 2.28 Å. There are six inequivalent Pb sites. In the first Pb site, Pb(1) is bonded to one O(1), one O(10), one O(2), one O(4), one O(6), and one O(8) atom to form edge-sharing PbO6 octahedra. The Pb(1)-O(1) bond length is 2.30 Å. The Pb(1)-O(10) bond length is 2.20 Å. The Pb(1)-O(2) bond length is 2.24 Å. The Pb(1)-O(4) bond length is 2.29 Å. The Pb(1)-O(6) bond length is 2.28 Å. The Pb(1)-O(8) bond length is 2.27 Å. In the second Pb site, Pb(2) is bonded to one O(1), one O(12), one O(2), one O(5), one O(7), and one O(9) atom to form edge-sharing PbO6 octahedra. The Pb(2)-O(1) bond length is 2.29 Å. The Pb(2)-O(12) bond length is 2.30 Å. The Pb(2)-O(2) bond length is 2.28 Å. The Pb(2)-O(5) bond length is 2.29 Å. The Pb(2)-O(7) bond length is 2.34 Å. The Pb(2)-O(9) bond length is 2.30 Å. In the third Pb site, Pb(3) is bonded to one O(11), one O(14), one O(17), one O(3), one O(4), and one O(8) atom to form edge-sharing PbO6 octahedra. The Pb(3)-O(11) bond length is 2.28 Å. The Pb(3)-O(14) bond length is 2.23 Å. The Pb(3)-O(17) bond length is 2.25 Å. The Pb(3)-O(3) bond length is 2.31 Å. The Pb(3)-O(4) bond length is 2.33 Å. The Pb(3)-O(8) bond length is 2.29 Å. In the fourth Pb site, Pb(4) is bonded to one O(13), one O(15), one O(17), one O(3), one O(5), and one O(9) atom to form edge-sharing PbO6 octahedra. The Pb(4)-O(13) bond length is 2.30 Å. The Pb(4)-O(15) bond length is 2.27 Å. The Pb(4)-O(17) bond length is 2.30 Å. The Pb(4)-O(3) bond length is 2.32 Å. The Pb(4)-O(5) bond length is 2.33 Å. The Pb(4)-O(9) bond length is 2.30 Å. In the fifth Pb site, Pb(5) is bonded in a 6-coordinate geometry to one O(11), one O(12), one O(14), one O(16), one O(18), and one O(7) atom. The Pb(5)-O(11) bond length is 2.58 Å. The Pb(5)-O(12) bond length is 2.23 Å. The Pb(5)-O(14) bond length is 2.17 Å. The Pb(5)-O(16) bond length is 2.30 Å. The Pb(5)-O(18) bond length is 2.34 Å. The Pb(5)-O(7) bond length is 2.22 Å. In the sixth Pb site, Pb(6) is bonded in a 4-coordinate geometry to one O(10), one O(15), one O(18), and one O(6) atom. The Pb(6)-O(10) bond length is 2.27 Å. The Pb(6)-O(15) bond length is 2.37 Å. The Pb(6)-O(18) bond length is 2.49 Å. The Pb(6)-O(6) bond length is 2.29 Å. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded to one Ag(1), one Ag(10), one Pb(1), and one Pb(2) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the second O site, O(2) is bonded to one Ag(14), one Ag(7), one Pb(1), and one Pb(2) atom to form a mixture of distorted corner and edge-sharing OAg2Pb2 tetrahedra. In the third O site, O(3) is bonded to one Ag(1), one Ag(9), one Pb(3), and one Pb(4) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the fourth O site, O(4) is bonded to one Ag(2), one Ag(5), one Pb(1), and one Pb(3) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(8)Ag2Pb2 tetrahedra. In the fifth O site, O(5) is bonded to one Ag(3), one Ag(5), one Pb(2), and one Pb(4) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(12)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(9)Ag2Pb2 tetrahedra. In the sixth O site, O(6) is bonded to one Ag(3), one Ag(6), one Pb(1), and one Pb(6) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(8)Ag2Pb2 tetrahedra, and  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid. In the seventh O site, O(7) is bonded to one Ag(2), one Ag(6), one Pb(2), and one Pb(5) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(12)Ag2Pb2 tetrahedra. In the eighth O site, O(8) is bonded to one Ag(4), one Ag(8), one Pb(1), and one Pb(3) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the ninth O site, O(9) is bonded to one Ag(11), one Ag(8), one Pb(2), and one Pb(4) atom to form a mixture of corner and edge-sharing OAg2Pb2 tetrahedra. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Ag(14), one Ag(9), one Pb(1), and one Pb(6) atom. In the eleventh O site, O(11) is bonded in a 4-coordinate geometry to one Mg(1), one Ag(11), one Pb(3), and one Pb(5) atom. In the twelfth O site, O(12) is bonded to one Ag(12), one Ag(9), one Pb(2), and one Pb(5) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(2)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(7)Ag2Pb2 tetrahedra. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Mg(1), one Ag(4), and one Pb(4) atom. In the fourteenth O site, O(14) is bonded in a trigonal non-coplanar geometry to one Ag(10), one Pb(3), and one Pb(5) atom. In the fifteenth O site, O(15) is bonded to one Ag(10), one Ag(12), one Pb(4), and one Pb(6) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(1)Ag2Pb2 tetrahedra,  a cornercorner with one O(12)Ag2Pb2 tetrahedra,  a cornercorner with one O(17)Ag2Pb2 tetrahedra,  a cornercorner with one O(3)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra, and  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid. In the sixteenth O site, O(16) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ag(14), one Ag(8), and one Pb(5) atom. In the seventeenth O site, O(17) is bonded to one Ag(13), one Ag(6), one Pb(3), and one Pb(4) atom to form OAg2Pb2 tetrahedra that share  a cornercorner with one O(15)Ag2Pb2 tetrahedra,  a cornercorner with one O(4)Ag2Pb2 tetrahedra,  a cornercorner with one O(5)Ag2Pb2 tetrahedra,  a cornercorner with one O(6)Ag2Pb2 tetrahedra,  a cornercorner with one O(7)Ag2Pb2 tetrahedra,  a cornercorner with one O(8)Ag2Pb2 tetrahedra,  a cornercorner with one O(9)Ag2Pb2 tetrahedra,  a cornercorner with one O(18)MgAg2Pb2 trigonal bipyramid, and  an edgeedge with one O(3)Ag2Pb2 tetrahedra. In the eighteenth O site, O(18) is bonded to one Mg(1), one Ag(13), one Ag(5), one Pb(5), and one Pb(6) atom to form distorted corner-sharing OMgAg2Pb2 trigonal bipyramids.