Ce8Ag6Ge8O crystallizes in the orthorhombic Pmc2_1 space group. There are eight inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to two equivalent Ag(4), two equivalent Ag(6), one Ge(3), one Ge(5), one Ge(7), and two equivalent Ge(2) atoms. In the second Ce site, Ce(2) is bonded in a distorted bent 120 degrees geometry to one Ge(4), one Ge(6), one Ge(8), two equivalent Ge(1), and two equivalent O(1) atoms. In the third Ce site, Ce(3) is bonded in a 12-coordinate geometry to one Ag(3), one Ag(5), two equivalent Ag(2), two equivalent Ag(6), two equivalent Ge(2), two equivalent Ge(6), and two equivalent Ge(8) atoms. In the fourth Ce site, Ce(4) is bonded in a 12-coordinate geometry to one Ag(4), one Ag(6), two equivalent Ag(1), two equivalent Ag(5), two equivalent Ge(1), two equivalent Ge(5), and two equivalent Ge(7) atoms. In the fifth Ce site, Ce(5) is bonded in a single-bond geometry to one Ag(1), two equivalent Ag(2), one Ge(3), two equivalent Ge(4), two equivalent Ge(8), and one O(1) atom. In the sixth Ce site, Ce(6) is bonded in a 9-coordinate geometry to one Ag(2), one Ag(6), two equivalent Ag(1), one Ge(4), two equivalent Ge(3), and two equivalent Ge(7) atoms. In the seventh Ce site, Ce(7) is bonded in a single-bond geometry to one Ag(1), two equivalent Ag(4), two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(6), and one O(1) atom. In the eighth Ce site, Ce(8) is bonded in a 10-coordinate geometry to one Ag(2), one Ag(4), two equivalent Ag(3), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(5) atoms. There are six inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 10-coordinate geometry to one Ce(5), one Ce(7), two equivalent Ce(4), two equivalent Ce(6), one Ge(5), one Ge(7), and two equivalent Ge(4) atoms. In the second Ag site, Ag(2) is bonded in a 10-coordinate geometry to one Ce(6), one Ce(8), two equivalent Ce(3), two equivalent Ce(5), one Ge(6), one Ge(8), and two equivalent Ge(3) atoms. In the third Ag site, Ag(3) is bonded in a 7-coordinate geometry to one Ce(3), two equivalent Ce(8), one Ge(1), one Ge(3), and two equivalent Ge(6) atoms. In the fourth Ag site, Ag(4) is bonded in a 10-coordinate geometry to one Ce(4), one Ce(8), two equivalent Ce(1), two equivalent Ce(7), one Ge(2), one Ge(4), and two equivalent Ge(5) atoms. In the fifth Ag site, Ag(5) is bonded in a 7-coordinate geometry to one Ce(3), two equivalent Ce(4), two equivalent Ag(6), one Ge(1), one Ge(7), and two equivalent Ge(8) atoms. In the sixth Ag site, Ag(6) is bonded in a 12-coordinate geometry to one Ce(4), one Ce(6), two equivalent Ce(1), two equivalent Ce(3), two equivalent Ag(5), one Ge(2), one Ge(8), and two equivalent Ge(7) atoms. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), two equivalent Ce(4), two equivalent Ce(8), one Ag(3), one Ag(5), and one Ge(5) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(3), two equivalent Ce(7), one Ag(4), one Ag(6), and one Ge(6) atom. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ce(1), one Ce(5), two equivalent Ce(6), two equivalent Ce(8), one Ag(3), and two equivalent Ag(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(6), two equivalent Ce(5), two equivalent Ce(7), one Ag(4), and two equivalent Ag(1) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(4), two equivalent Ce(8), one Ag(1), two equivalent Ag(4), and one Ge(1) atom. In the sixth Ge site, Ge(6) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(3), two equivalent Ce(7), one Ag(2), two equivalent Ag(3), and one Ge(2) atom. In the seventh Ge site, Ge(7) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(4), two equivalent Ce(6), one Ag(1), one Ag(5), and two equivalent Ag(6) atoms. In the eighth Ge site, Ge(8) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(3), two equivalent Ce(5), one Ag(2), one Ag(6), and two equivalent Ag(5) atoms. O(1) is bonded to one Ce(5), one Ce(7), and two equivalent Ce(2) atoms to form corner-sharing OCe4 tetrahedra.
Ce8Ag6Ge8O crystallizes in the orthorhombic Pmc2_1 space group. There are eight inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 9-coordinate geometry to two equivalent Ag(4), two equivalent Ag(6), one Ge(3), one Ge(5), one Ge(7), and two equivalent Ge(2) atoms. Both Ce(1)-Ag(4) bond lengths are 3.46 Å. Both Ce(1)-Ag(6) bond lengths are 3.47 Å. The Ce(1)-Ge(3) bond length is 3.43 Å. The Ce(1)-Ge(5) bond length is 3.03 Å. The Ce(1)-Ge(7) bond length is 3.07 Å. Both Ce(1)-Ge(2) bond lengths are 3.06 Å. In the second Ce site, Ce(2) is bonded in a distorted bent 120 degrees geometry to one Ge(4), one Ge(6), one Ge(8), two equivalent Ge(1), and two equivalent O(1) atoms. The Ce(2)-Ge(4) bond length is 3.55 Å. The Ce(2)-Ge(6) bond length is 3.03 Å. The Ce(2)-Ge(8) bond length is 3.08 Å. Both Ce(2)-Ge(1) bond lengths are 3.14 Å. Both Ce(2)-O(1) bond lengths are 2.43 Å. In the third Ce site, Ce(3) is bonded in a 12-coordinate geometry to one Ag(3), one Ag(5), two equivalent Ag(2), two equivalent Ag(6), two equivalent Ge(2), two equivalent Ge(6), and two equivalent Ge(8) atoms. The Ce(3)-Ag(3) bond length is 3.23 Å. The Ce(3)-Ag(5) bond length is 3.22 Å. Both Ce(3)-Ag(2) bond lengths are 3.25 Å. Both Ce(3)-Ag(6) bond lengths are 3.30 Å. Both Ce(3)-Ge(2) bond lengths are 3.15 Å. Both Ce(3)-Ge(6) bond lengths are 3.20 Å. Both Ce(3)-Ge(8) bond lengths are 3.17 Å. In the fourth Ce site, Ce(4) is bonded in a 12-coordinate geometry to one Ag(4), one Ag(6), two equivalent Ag(1), two equivalent Ag(5), two equivalent Ge(1), two equivalent Ge(5), and two equivalent Ge(7) atoms. The Ce(4)-Ag(4) bond length is 3.26 Å. The Ce(4)-Ag(6) bond length is 3.24 Å. Both Ce(4)-Ag(1) bond lengths are 3.23 Å. Both Ce(4)-Ag(5) bond lengths are 3.28 Å. Both Ce(4)-Ge(1) bond lengths are 3.13 Å. Both Ce(4)-Ge(5) bond lengths are 3.21 Å. Both Ce(4)-Ge(7) bond lengths are 3.18 Å. In the fifth Ce site, Ce(5) is bonded in a single-bond geometry to one Ag(1), two equivalent Ag(2), one Ge(3), two equivalent Ge(4), two equivalent Ge(8), and one O(1) atom. The Ce(5)-Ag(1) bond length is 3.40 Å. Both Ce(5)-Ag(2) bond lengths are 3.48 Å. The Ce(5)-Ge(3) bond length is 3.28 Å. Both Ce(5)-Ge(4) bond lengths are 3.15 Å. Both Ce(5)-Ge(8) bond lengths are 3.11 Å. The Ce(5)-O(1) bond length is 2.28 Å. In the sixth Ce site, Ce(6) is bonded in a 9-coordinate geometry to one Ag(2), one Ag(6), two equivalent Ag(1), one Ge(4), two equivalent Ge(3), and two equivalent Ge(7) atoms. The Ce(6)-Ag(2) bond length is 3.39 Å. The Ce(6)-Ag(6) bond length is 3.45 Å. Both Ce(6)-Ag(1) bond lengths are 3.43 Å. The Ce(6)-Ge(4) bond length is 3.12 Å. Both Ce(6)-Ge(3) bond lengths are 3.10 Å. Both Ce(6)-Ge(7) bond lengths are 3.09 Å. In the seventh Ce site, Ce(7) is bonded in a single-bond geometry to one Ag(1), two equivalent Ag(4), two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(6), and one O(1) atom. The Ce(7)-Ag(1) bond length is 3.30 Å. Both Ce(7)-Ag(4) bond lengths are 3.26 Å. Both Ce(7)-Ge(2) bond lengths are 3.27 Å. Both Ce(7)-Ge(4) bond lengths are 3.18 Å. Both Ce(7)-Ge(6) bond lengths are 3.21 Å. The Ce(7)-O(1) bond length is 2.28 Å. In the eighth Ce site, Ce(8) is bonded in a 10-coordinate geometry to one Ag(2), one Ag(4), two equivalent Ag(3), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(5) atoms. The Ce(8)-Ag(2) bond length is 3.31 Å. The Ce(8)-Ag(4) bond length is 3.44 Å. Both Ce(8)-Ag(3) bond lengths are 3.20 Å. Both Ce(8)-Ge(1) bond lengths are 3.18 Å. Both Ce(8)-Ge(3) bond lengths are 3.17 Å. Both Ce(8)-Ge(5) bond lengths are 3.20 Å. There are six inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 10-coordinate geometry to one Ce(5), one Ce(7), two equivalent Ce(4), two equivalent Ce(6), one Ge(5), one Ge(7), and two equivalent Ge(4) atoms. The Ag(1)-Ge(5) bond length is 2.89 Å. The Ag(1)-Ge(7) bond length is 2.73 Å. Both Ag(1)-Ge(4) bond lengths are 2.66 Å. In the second Ag site, Ag(2) is bonded in a 10-coordinate geometry to one Ce(6), one Ce(8), two equivalent Ce(3), two equivalent Ce(5), one Ge(6), one Ge(8), and two equivalent Ge(3) atoms. The Ag(2)-Ge(6) bond length is 2.90 Å. The Ag(2)-Ge(8) bond length is 2.74 Å. Both Ag(2)-Ge(3) bond lengths are 2.75 Å. In the third Ag site, Ag(3) is bonded in a 7-coordinate geometry to one Ce(3), two equivalent Ce(8), one Ge(1), one Ge(3), and two equivalent Ge(6) atoms. The Ag(3)-Ge(1) bond length is 2.75 Å. The Ag(3)-Ge(3) bond length is 2.89 Å. Both Ag(3)-Ge(6) bond lengths are 2.65 Å. In the fourth Ag site, Ag(4) is bonded in a 10-coordinate geometry to one Ce(4), one Ce(8), two equivalent Ce(1), two equivalent Ce(7), one Ge(2), one Ge(4), and two equivalent Ge(5) atoms. The Ag(4)-Ge(2) bond length is 2.69 Å. The Ag(4)-Ge(4) bond length is 2.89 Å. Both Ag(4)-Ge(5) bond lengths are 2.63 Å. In the fifth Ag site, Ag(5) is bonded in a 7-coordinate geometry to one Ce(3), two equivalent Ce(4), two equivalent Ag(6), one Ge(1), one Ge(7), and two equivalent Ge(8) atoms. Both Ag(5)-Ag(6) bond lengths are 3.20 Å. The Ag(5)-Ge(1) bond length is 2.76 Å. The Ag(5)-Ge(7) bond length is 2.83 Å. Both Ag(5)-Ge(8) bond lengths are 2.74 Å. In the sixth Ag site, Ag(6) is bonded in a 12-coordinate geometry to one Ce(4), one Ce(6), two equivalent Ce(1), two equivalent Ce(3), two equivalent Ag(5), one Ge(2), one Ge(8), and two equivalent Ge(7) atoms. The Ag(6)-Ge(2) bond length is 2.70 Å. The Ag(6)-Ge(8) bond length is 2.87 Å. Both Ag(6)-Ge(7) bond lengths are 2.73 Å. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Ce(2), two equivalent Ce(4), two equivalent Ce(8), one Ag(3), one Ag(5), and one Ge(5) atom. The Ge(1)-Ge(5) bond length is 2.50 Å. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Ce(1), two equivalent Ce(3), two equivalent Ce(7), one Ag(4), one Ag(6), and one Ge(6) atom. The Ge(2)-Ge(6) bond length is 2.56 Å. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Ce(1), one Ce(5), two equivalent Ce(6), two equivalent Ce(8), one Ag(3), and two equivalent Ag(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Ce(2), one Ce(6), two equivalent Ce(5), two equivalent Ce(7), one Ag(4), and two equivalent Ag(1) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(4), two equivalent Ce(8), one Ag(1), two equivalent Ag(4), and one Ge(1) atom. In the sixth Ge site, Ge(6) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(3), two equivalent Ce(7), one Ag(2), two equivalent Ag(3), and one Ge(2) atom. In the seventh Ge site, Ge(7) is bonded in a 9-coordinate geometry to one Ce(1), two equivalent Ce(4), two equivalent Ce(6), one Ag(1), one Ag(5), and two equivalent Ag(6) atoms. In the eighth Ge site, Ge(8) is bonded in a 9-coordinate geometry to one Ce(2), two equivalent Ce(3), two equivalent Ce(5), one Ag(2), one Ag(6), and two equivalent Ag(5) atoms. O(1) is bonded to one Ce(5), one Ce(7), and two equivalent Ce(2) atoms to form corner-sharing OCe4 tetrahedra.