KCe(SO4)2 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(3) atoms. Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(7), and one O(8) atom. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ce(1), and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ce(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ce(1) and one S(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one Ce(1), and one S(1) atom.
KCe(SO4)2 crystallizes in the triclinic P-1 space group. K(1) is bonded in a 9-coordinate geometry to one O(2), one O(5), one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(3) atoms. The K(1)-O(2) bond length is 2.90 Å. The K(1)-O(5) bond length is 2.76 Å. The K(1)-O(6) bond length is 3.12 Å. The K(1)-O(7) bond length is 2.90 Å. The K(1)-O(8) bond length is 2.91 Å. There is one shorter (2.95 Å) and one longer (3.01 Å) K(1)-O(1) bond length. There is one shorter (2.78 Å) and one longer (2.87 Å) K(1)-O(3) bond length. Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Ce(1)-O(1) bond length is 2.58 Å. The Ce(1)-O(2) bond length is 2.67 Å. The Ce(1)-O(3) bond length is 2.49 Å. The Ce(1)-O(4) bond length is 2.53 Å. The Ce(1)-O(5) bond length is 2.60 Å. The Ce(1)-O(6) bond length is 2.59 Å. The Ce(1)-O(7) bond length is 2.52 Å. The Ce(1)-O(8) bond length is 2.47 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded in a tetrahedral geometry to one O(2), one O(6), one O(7), and one O(8) atom. The S(1)-O(2) bond length is 1.48 Å. The S(1)-O(6) bond length is 1.50 Å. The S(1)-O(7) bond length is 1.49 Å. The S(1)-O(8) bond length is 1.50 Å. In the second S site, S(2) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. The S(2)-O(1) bond length is 1.49 Å. The S(2)-O(3) bond length is 1.51 Å. The S(2)-O(4) bond length is 1.47 Å. The S(2)-O(5) bond length is 1.50 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ce(1), and one S(2) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent K(1), one Ce(1), and one S(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Ce(1) and one S(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one K(1), one Ce(1), and one S(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one Ce(1), and one S(1) atom.