LiCe10(Pb3O)2 crystallizes in the monoclinic Cm space group. Li(1) is bonded in a distorted single-bond geometry to one Pb(1), two equivalent Pb(4), and one O(1) atom. There are seven inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), two equivalent Pb(4), and one O(1) atom. In the second Ce site, Ce(2) is bonded in a distorted single-bond geometry to two equivalent Pb(3), two equivalent Pb(4), and one O(1) atom. In the third Ce site, Ce(3) is bonded in a distorted single-bond geometry to two equivalent Pb(3), two equivalent Pb(4), and one O(2) atom. In the fourth Ce site, Ce(4) is bonded in a distorted single-bond geometry to one Pb(2), two equivalent Pb(3), two equivalent Pb(4), and one O(1) atom. In the fifth Ce site, Ce(5) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), two equivalent Pb(4), and one O(2) atom. In the sixth Ce site, Ce(6) is bonded to one Pb(1), one Pb(2), two equivalent Pb(3), and two equivalent Pb(4) atoms to form distorted corner-sharing CePb6 octahedra. The corner-sharing octahedral tilt angles range from 4-49°. In the seventh Ce site, Ce(7) is bonded in a distorted single-bond geometry to one Pb(2), two equivalent Pb(3), two equivalent Pb(4), and one O(2) atom. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 1-coordinate geometry to one Li(1) and two equivalent Ce(6) atoms. In the second Pb site, Pb(2) is bonded in a 8-coordinate geometry to one Ce(4), one Ce(7), two equivalent Ce(1), two equivalent Ce(5), and two equivalent Ce(6) atoms. In the third Pb site, Pb(3) is bonded in a 8-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one Ce(5), one Ce(7), and two equivalent Ce(6) atoms. In the fourth Pb site, Pb(4) is bonded in a 11-coordinate geometry to one Li(1), one Ce(2), one Ce(3), one Ce(4), one Ce(7), two equivalent Ce(1), two equivalent Ce(5), and two equivalent Ce(6) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal bipyramidal geometry to one Li(1), one Ce(2), one Ce(4), and two equivalent Ce(1) atoms. In the second O site, O(2) is bonded in a tetrahedral geometry to one Ce(3), one Ce(7), and two equivalent Ce(5) atoms.
LiCe10(Pb3O)2 crystallizes in the monoclinic Cm space group. Li(1) is bonded in a distorted single-bond geometry to one Pb(1), two equivalent Pb(4), and one O(1) atom. The Li(1)-Pb(1) bond length is 2.61 Å. Both Li(1)-Pb(4) bond lengths are 3.34 Å. The Li(1)-O(1) bond length is 1.91 Å. There are seven inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), two equivalent Pb(4), and one O(1) atom. The Ce(1)-Pb(2) bond length is 3.34 Å. The Ce(1)-Pb(3) bond length is 3.23 Å. There is one shorter (3.39 Å) and one longer (3.61 Å) Ce(1)-Pb(4) bond length. The Ce(1)-O(1) bond length is 2.38 Å. In the second Ce site, Ce(2) is bonded in a distorted single-bond geometry to two equivalent Pb(3), two equivalent Pb(4), and one O(1) atom. Both Ce(2)-Pb(3) bond lengths are 3.40 Å. Both Ce(2)-Pb(4) bond lengths are 3.65 Å. The Ce(2)-O(1) bond length is 2.48 Å. In the third Ce site, Ce(3) is bonded in a distorted single-bond geometry to two equivalent Pb(3), two equivalent Pb(4), and one O(2) atom. Both Ce(3)-Pb(3) bond lengths are 3.24 Å. Both Ce(3)-Pb(4) bond lengths are 3.59 Å. The Ce(3)-O(2) bond length is 2.29 Å. In the fourth Ce site, Ce(4) is bonded in a distorted single-bond geometry to one Pb(2), two equivalent Pb(3), two equivalent Pb(4), and one O(1) atom. The Ce(4)-Pb(2) bond length is 3.24 Å. Both Ce(4)-Pb(3) bond lengths are 3.25 Å. Both Ce(4)-Pb(4) bond lengths are 3.50 Å. The Ce(4)-O(1) bond length is 2.37 Å. In the fifth Ce site, Ce(5) is bonded in a distorted single-bond geometry to one Pb(2), one Pb(3), two equivalent Pb(4), and one O(2) atom. The Ce(5)-Pb(2) bond length is 3.41 Å. The Ce(5)-Pb(3) bond length is 3.23 Å. There is one shorter (3.50 Å) and one longer (3.57 Å) Ce(5)-Pb(4) bond length. The Ce(5)-O(2) bond length is 2.33 Å. In the sixth Ce site, Ce(6) is bonded to one Pb(1), one Pb(2), two equivalent Pb(3), and two equivalent Pb(4) atoms to form distorted corner-sharing CePb6 octahedra. The corner-sharing octahedral tilt angles range from 4-49°. The Ce(6)-Pb(1) bond length is 3.25 Å. The Ce(6)-Pb(2) bond length is 3.33 Å. There is one shorter (3.29 Å) and one longer (3.32 Å) Ce(6)-Pb(3) bond length. There is one shorter (3.57 Å) and one longer (3.64 Å) Ce(6)-Pb(4) bond length. In the seventh Ce site, Ce(7) is bonded in a distorted single-bond geometry to one Pb(2), two equivalent Pb(3), two equivalent Pb(4), and one O(2) atom. The Ce(7)-Pb(2) bond length is 3.28 Å. Both Ce(7)-Pb(3) bond lengths are 3.48 Å. Both Ce(7)-Pb(4) bond lengths are 3.55 Å. The Ce(7)-O(2) bond length is 2.36 Å. There are four inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a 1-coordinate geometry to one Li(1) and two equivalent Ce(6) atoms. In the second Pb site, Pb(2) is bonded in a 8-coordinate geometry to one Ce(4), one Ce(7), two equivalent Ce(1), two equivalent Ce(5), and two equivalent Ce(6) atoms. In the third Pb site, Pb(3) is bonded in a 8-coordinate geometry to one Ce(1), one Ce(2), one Ce(3), one Ce(4), one Ce(5), one Ce(7), and two equivalent Ce(6) atoms. In the fourth Pb site, Pb(4) is bonded in a 11-coordinate geometry to one Li(1), one Ce(2), one Ce(3), one Ce(4), one Ce(7), two equivalent Ce(1), two equivalent Ce(5), and two equivalent Ce(6) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal bipyramidal geometry to one Li(1), one Ce(2), one Ce(4), and two equivalent Ce(1) atoms. In the second O site, O(2) is bonded in a tetrahedral geometry to one Ce(3), one Ce(7), and two equivalent Ce(5) atoms.